Trane Engineered Smoke Control System Application Manual Download Page 81 | Manualshive

Page: 81 / 156

background image

Wiring inputs and outputs

BAS-APG001-EN

69

Wiring binary outputs

The Tracer MP581 controller has six binary outputs. These are powered
outputs, not dry-contact outputs.

IMPORTANT

Use pilot relays for dry-contact outputs when the load is greater than
6 VA or has a current draw of greater than 0.25 A. Use powered outputs
when the load is less than 6 VA or has a current draw of less than
0.25 A.

To wire a binary output:

1.

Connect the common wire to a common terminal as shown in
Figure 36.

2.

Connect the shield wire to a common terminal at the termination
board and tape it back at the output device.

3.

Connect the signal wire to an available binary output terminal

(BO1–BO6).

4.

Use the Rover service tool to configure the binary output.

Note:

When controlling coil-based loads, such as pilot relays, do not
forget to account for “inrush” current. Inrush current can be
three (or more) times greater than the operating current. You
can find information on inrush current for specific types of out-
puts in their product specifications.

«
...
79
80
81
82
83
...
»

Summary of Contents for Engineered Smoke Control System

Page 1: ...BAS APG001 EN Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...

Page 2: ......

Page 3: ...BAS APG001 EN September 2006 Applications Guide Engineered Smoke Control System for TRACER SUMMIT ...

Page 4: ...h the compact disk Please read them thoroughly Although Trane has tested the hardware and software described in this guide no guarantee is offered that the hardware and software are error free Trane reserves the right to revise this publication at any time and to make changes to its content without obligation to notify any per son of such revision or change Trane may have patents or patent applica...

Page 5: ...t may also be used to alert against unsafe practices CAUTION Indicates a situation that may result in equipment damage or property damage The following format and symbol conventions appear at appropriate sections throughout this manual IMPORTANT Alerts installer servicer or operator to potential actions that could cause the product or system to operate improperly but will not likely result in pote...

Page 6: ......

Page 7: ...ation 12 Zoned smoke control detection and activation 13 Stairwell smoke control detection and activation 13 Elevator smoke control detection and activation 13 Atrium smoke exhausting detection and activation 13 Design approaches to smoke control 15 No smoke approach 15 Tenability approach 15 Dedicated system approach 15 Design considerations for smoke control 16 Plugholing 16 Smoke feedback 17 Ch...

Page 8: ...talling the Tracer Summit BMTX BCU 39 Mounting the hardware 39 Operating environment requirements 39 Clearances 40 Mounting the back of the enclosure 42 Wiring high voltage ac power 43 EMI RFI considerations 46 Checking the earth ground 46 Connecting the main circuit board 48 Installing the door 50 Transtector Ethernet UUKL nondedicated only and LonTalk connections on the BMTX BCU 51 Chapter 5 Ins...

Page 9: ... Vdc analog outputs 71 Checking 0 20 mA analog outputs 72 Wiring LonTalk to the Tracer MP581 74 Installing the circuit board 76 Verifying operation and communication of the Tracer MP581 79 Service Pin button 79 Interpreting LEDs 79 Binary output LEDs 80 Service LED 80 Status LED 81 Comm LED 81 Installing the door 82 Removing the door 82 Chapter 6 Installing the EX2 expansion module 85 Storage envi...

Page 10: ...moke purge 118 Variable air volume system 119 Constant volume system 119 UL tested programs 119 Chapter 8 Network variable bindings 121 Overview 121 Binding network variables 121 Tracer MP580 581 bindings 122 Receiving data 122 Sending data 122 Heartbeated network variables 122 Custom bindings 123 UUKL binding list watchdog communication 123 UUKL binding list smoke alarm status 126 UUKL binding li...

Page 11: ...Contents BAS APG001 EN v Node 131 Binding types 131 Basic binding shapes and the hub target system 131 Designing bindings 133 Appendix A References 141 ...

Page 12: ...Contents vi BAS APG001 EN ...

Page 13: ...ther building spaces Reduce property loss Provide conditions that assist the fire service Aid in post fire smoke removal Smoke consists of airborne solid and liquid particulates gases formed during combustion and the air supporting the particulates and gases Smoke control manages smoke movement to reduce the threat to life and property This chapter describes Methods of smoke control Applications o...

Page 14: ...bject to smoke infiltration from adjacent compartments In addition the fire service can employ the dilution method to remove smoke after extinguishing a fire Smoke dilution is also called smoke purging smoke removal or smoke extraction Within a fire compartment however dilution may not result in any significant improvement in air quality HVAC systems promote a considerable degree of air mixing wit...

Page 15: ...ling height ft m Minimum pressure difference In w c Pa Sprinklered Any 0 05 12 4 Non sprinklered 9 2 7 0 10 24 9 Non sprinklered 15 4 6 0 14 34 8 Non sprinklered 21 6 4 0 18 44 8 Notes The minimum pressure difference column provides the pressure difference between the high pressure side and the low pressure side The minimum pressure difference values incorporate the pressure induced by the buoyanc...

Page 16: ...oser force lb N Pressure difference In w c Pa 6 26 7 0 45 112 0 0 40 99 5 0 37 92 1 0 34 84 6 0 31 77 1 8 35 6 0 41 102 0 0 37 92 1 0 34 84 5 0 31 77 1 0 28 69 7 10 44 5 0 37 92 1 0 34 84 5 0 30 74 6 0 28 69 7 0 26 64 7 12 53 4 0 34 84 5 0 30 74 6 0 27 67 2 0 25 62 2 0 23 57 2 14 62 3 0 30 74 6 0 27 67 2 0 24 59 7 0 22 45 7 0 21 52 2 Notes Total door opening force is 30 lb 133 N door height is 80 ...

Page 17: ...es to provide zoned stairwell elevator shaft and atrium smoke control Zoned smoke control Zoned smoke control uses compartmentation and pressurization to limit smoke movement within a building Typically a building consists of a number of smoke control zones Barriers partitions doors ceilings and floors separate the zones Each floor of a building is usually a separate zone Figure 3 on page 6 Howeve...

Page 18: ...m serves multiple floors Figure 4 on page 7 and each floor is a separate zone the following sequence provides smoke control 1 In the smoke control zone the smoke damper in the supply duct closes and the smoke damper in the return duct opens 2 In adjacent and or unaffected zones the smoke dampers in the return ducts close and smoke dampers in the supply ducts open 3 If the system has a return air d...

Page 19: ... from the source of the smoke Secondarily it provides a staging area for fire fighters In the smoke control zone a pressurized stairwell maintains a positive pressure difference across closed stairwell doors to limit smoke infiltration to the stairwell Stairwell smoke control employs one or more of these design techniques compensated pressurization non compensated pressurization single injection p...

Page 20: ...etric damper a motor operated damper or an exhaust fan can be used to maintain the air pressure Non compensated pressurization technique The non compensated pressurization technique provides a constant volume of pressurization air The level of pressurization depends on the state of the stairwell access doors When access doors open the pressure in the stairwell lowers When access doors close the pr...

Page 21: ...e multiple injection technique supplies pressurization air to the stairwell from more than one location When access doors are open near one injection point pressurization air escapes However other injection points maintain positive pressure differences across the remaining access doors Figure 6 Sample single and multiple injection methods Elevator shaft smoke control Elevator shaft smoke control u...

Page 22: ...dresses smoke control for atria malls and large areas Atrium smoke control techniques consist of smoke exhausting natural smoke venting and smoke filling Smoke exhausting technique The smoke exhausting technique employs fans to exhaust smoke from the smoke layer under the ceiling Exhausting prevents the smoke layer from descending and coming into contact with the occupants of the atrium Figure 7 E...

Page 23: ...he smoke layer and the temperature of the smoke Figure 8 Sample natural smoke venting technique Smoke filling technique The smoke filling technique allows smoke to collect at the ceiling Without fans to exhaust the smoke the smoke layer grows thicker and descends Atrium smoke filling is viable when an atrium is of such size that the time needed for the descending smoke to reach the occupants is gr...

Page 24: ...ted when two smoke detectors in a smoke zone activate Chapter 12 4 3 3 states that the system must be capable of at least 6 air changes per hour Smoke detection and system activation The appropriate smoke detection and system activation approach depends on the specifics of the smoke control system and on the code requirements Automatic activation has the advantage over manual activation Automatic ...

Page 25: ...vice including sprinkler water flow switches heat detectors smoke detectors and manual pull stations pull boxes Most elevator smoke control systems operate in the same manner regardless of the source of the alarm signal Atrium smoke exhausting detection and activation Atrium smoke exhausting activation occurs on a signal from a beam smoke detector A beam smoke detector consists of a light beam tra...

Page 26: ...ost common beam detector configuration A number of beam detectors located at different levels under the ceiling detect the formation and thickening of a smoke layer The bottom of the grid is at the lowest expected smoke stratification level Horizontal grid The horizontal grid is an alternate beam detector configuration A number of beam detectors located at different levels under the ceiling detect...

Page 27: ...bility approach The tenability approach provides a smoke control system that allows smoke to come into contact with occupants However in this approach the smoke control system dilutes the by products of combustion before they come into contact with people In atria applications the natural mixing of air into a smoke plume can result in significant dilution Tenability criteria vary with the applicat...

Page 28: ...aust Figure 10 Plugholing decreases the smoke exhaust and increases the smoke layer depth It has the potential of exposing occupants to smoke The maximum flow of smoke Qmax exhausted without plugholing depends on the depth of the smoke layer and the temperature of the smoke If the required total smoke exhaust is greater than Qmax additional exhaust vents will eliminate plugholing The distance betw...

Page 29: ...es Design techniques reduce the probability of smoke feedback Supply air intakes located below openings from which smoke might flow such as building exhausts smoke shaft outlets and elevator vents Automatic shutdown capability to stop the system in the event of smoke feedback For more information on smoke feedback refer to SFPE 1995 Fire Protection Engineering Handbook ...

Page 30: ...Chapter 1 Smoke control overview 18 BAS APG001 EN ...

Page 31: ...ibility of the building architects and engineers In the National Fire Protection Association NFPA publication NFPA 101 NFPA 2003 Life Safety Code chapter 11 8 provides general high rise building requirements Chapter 12 42 provides high rise building requirements based on type of occupancy Both chapters may apply to a specific building Understanding the smoke control system operating modes enables ...

Page 32: ...ans and dampers to pressurize adjacent zones in order to contain the smoke in the alarm zone Unaffected mode A zone is in unaffected mode when it is neither the alarm zone nor an adjacent zone and an alarm is present in the building In large buildings there may be many zones that are not near the alarm zone Codes do not state which zones are unaffected In unaffected mode the smoke control system m...

Page 33: ...nd Ventilating Systems section 6 4 2 1 provides the requirements for duct smoke detectors Supply duct smoke detectors must be located downstream of the system filters and ahead of any branch connection In mixing systems this is usually after the return air connection Duct smoke detectors may be required in the supply duct of all air handling systems greater than 2000 cubic feet per minute CFM and ...

Page 34: ...ives alarm signals If the FACP receives an alarm it notifies the smoke control system of the alarm and the alarm location The zone layout of the FACP must match the zone layout of the building to ensure that the FACP is capable of sending accurate signals to the smoke control system The mechanical and electrical consulting engineers coordinate the building zone layout to the FACP layout to ensure ...

Page 35: ...trol large central fan systems may also operate the mixing dampers to prevent tripping the high and low pressure cutouts Manual switches at the FSCS are either 2 or 3 position switches Labels show the current state of each switch Table 4 Table 4 Switch state descriptions Smoke control system equipment The smoke control system receives alarm signals from the FACP and manual command signals from the...

Page 36: ...th supply and return exhaust dampers already open Supply dampers should be sized such that any one damper can spill an adequate amount of air Outdoor air return air relief and exhaust dampers A nondedicated comfort control system controls outdoor air return air relief and exhaust dampers In normal operation the return damper operates in opposition to the outdoor air damper However during smoke con...

Page 37: ...ages A spring on the actuator positions the damper if power is lost The power loss position is typically the actuator closed normally closed position The electrical power that operates the smoke damper must be from an emergency power source and is monitored at a point after the last disconnect The loss of electrical power initiates a Trouble indication Fans Fans need additional control components ...

Page 38: ... signals for the FSCS The damper blades activate the switches Some codes require two switches in order to sense both the fully opened and fully closed position of the damper Tracer MP581 programmable controller The Tracer MP581 must have multiple binary inputs to verify the On and Off operation of fans It must also have multiple binary inputs to verify the Open and Closed positions of dampers Equi...

Page 39: ...ystem components Building maintenance personnel schedule and conduct the tests The manual periodic tests verify smoke control system responses to alarm zone inputs Some of the manual testing must be performed with the system operating on emergency power if applicable An alarm must be generated in each zone The system and equipment responses must be verified and recorded Manual periodic testing sho...

Page 40: ...ose Close Close Open Smoke zone 1 Alarm Adjacent Unaffected Unaffected Smoke zone 2 Adjacent Alarm Adjacent Unaffected Smoke zone 3 Unaffected Adjacent Alarm Adjacent Smoke zone 4 Unaffected Unaffected Adjacent Alarm Equipment First smoke zone in alarm Zone 1 Zone 2 Zone 3 Zone 4 Main sup fan On On On On Main R E fan On On On On Stair press fan On On On On 1st flr sup dmpr Open Open Open Open 1st ...

Page 41: ...ardware based such as from analog or binary inputs and outputs Communication based such as from the Lontalk communication link or I O bus EX2 The table also presents different cabling distance requirements depending on whether the data path is monitored or unmonitored There are no stated distance limitations for monitored information paths The maximum distance allowed is the same as the manufactur...

Page 42: ...ata paths Refer to the best wiring practices given in BMTX SVN01A EN for installing Lontalk communication links Trane LonTalk communication link Refer to the wiring requirements given in CNT SVN01C EN for the I O bus wiring between the Tracer MP580 581 and the EX2s Tracer MP580 581 EX2 I O bus com munication link Unmonitored data paths 3 ft 1 m NFPA 72A 2002 section 6 15 2 2 Unmonitored distance f...

Page 43: ...d be wired on the smoke control communication link Devices that are a part of the Tracer Summit system but are not used by the smoke control system must be on a separate communication link IMPORTANT For dedicated smoke control system only Tracer MP581s used for smoke control are allowed on the LonTalk communication link Tracer MP581s and other LonTalk UCMs not involved in smoke control must be con...

Page 44: ...G001 EN System riser diagrams System riser diagrams Figure 11 show panel locations power requirements power sources and interconnecting wiring requirements They also show the wiring that must be in conduit Figure 11 Sample system riser diagram ...

Page 45: ...ct opens damper Diagrams for field devices not furnished by Trane are created during installation After installation the diagrams become part of the as built documentation Diagrams for the control of starters and variable flow devices VFDs must show the required relays and connections for the hierarchy of control Figure 12 on page 33 Relays must enable starters and VFDs to bypass some safety devic...

Page 46: ...FSCS panel is designed for a specific smoke control system Figure 13 The FSCS panel comes from a listed vendor and is provided as part of the smoke control system Before ordering the panel UL must approve front panel drawings that show lights and switches Figure 13 Sample FSCS panel ...

Page 47: ...audible alarm of the FSCS as well as supplying 24 Vac power to operate the lamp test relay s Table 9 shows wires for a typical Tracer MP581 that controls the FSCS trouble LED and the Sonalert audible alarm Figure 14 on page 36 shows Tracer MP581 to FSCS wiring Table 9 Wires for a Tracer MP581 that control FSCS trouble LED and Sonalert alarm Cables per Tracer MP581 Type of wiring Function 1 22 24 V...

Page 48: ...Chapter 3 Installation diagrams 36 BAS APG001 EN Figure 14 Tracer MP581 to FSCS wiring ...

Page 49: ...etween the Tracer MP581 s and the FACP is determined by the total number of zones in the fire alarm system Multiple Tracer MP581 panels may be required to monitor and control the FACP Table 10 gives wiring information for a typical Tracer MP581 that communicates to an FACP Figure 15 on page 38 shows the details for wiring a Tracer MP581 to an FACP Table 10 Wiring for a typical Tracer MP581 that co...

Page 50: ...Chapter 3 Installation diagrams 38 BAS APG001 EN Figure 15 Tracer MP581 to FACP wiring ...

Page 51: ... the possibility of tampering or vandalism CAUTION Avoid equipment damage Install the BCU in a location that is out of direct sunlight Failure to do so may cause it to overheat Operating environment requirements Make sure that the operating environment conforms to the specifications listed in Table 11 Enclosure dimensions are illustrated in Figure 17 on page 41 Table 11 Operating environment speci...

Page 52: ...rances Make sure that the mounting location has enough room to meet the mini mum clearances shown in Figure 16 Figure 16 Minimum clearances for the BMTX BCU enclosure 24 in 60 cm to fully open door 12 in 30 cm 36 in 90 cm 12 in 30 cm 50 in 130 cm recommended 12 in 30 cm ...

Page 53: ...dware BAS APG001 EN 41 Figure 17 BMTX BCU enclosure dimensions Front view Top view Bottom view Left view Right view Note Six of the twelve knockouts are dual sized knockouts for 1 inch 25 mm and 0 75 inch 19 mm conduit ...

Page 54: ...nding screw installed Verify this by checking the location shown in Figure 18 The enclosure door is shipped separately If the door has already been attached to the enclosure back remove it To mount the back of the enclosure 1 Using the enclosure back as a template mark the location of the four mounting holes on the mounting surface see Figure 18 Figure 18 Enclosure mounting holes Mounting holes Te...

Page 55: ... may cause control malfunctions A disconnect switch for the dedicated power circuit must be near the controller within easy reach of the operator and marked as the dis connecting device for the controller High voltage power wire conduits or wire bundles must not contain input output wires Failure to comply may cause the controller to mal function due to electrical noise High voltage power wiring m...

Page 56: ...move the high volt age area cover plate 5 Feed the high voltage power wire into the enclosure 6 Connect the line wire to the L terminal as shown in Figure 19 on page 45 7 Connect the neutral wire to the N terminal 8 Connect the green ground wire to the chassis ground screw The ground wire must be continuous back to the circuit breaker panel 9 Replace the cover plate WARNING Hazardous voltage The c...

Page 57: ...Wiring high voltage ac power BAS APG001 EN 45 Figure 19 AC wiring ...

Page 58: ...nt in areas of high EMI or RFI always check the quality of the ground regardless of location WARNING Hazardous voltage The cover plate must be in place when the BCU is operating Failure to replace the cover plate could result in death or serious injury If the earth ground has a voltage of more than 4 Vac use a different ground Failure to do so could result in death or serious injury To check the q...

Page 59: ...EMI RFI considerations BAS APG001 EN 47 Figure 20 Checking the earth ground ...

Page 60: ...it board 1 Verify that the 24 Vac power cable is not connected to the termination board 2 Hold the circuit board frame at a 90 angle to the back of the enclosure as shown in Figure 21 3 Connect the circuit board s 60 pin ribbon cable to the termination board s 60 pin slot The connector is keyed to the slot To avoid difficulty make sure that the key is lined up with the slot Figure 21 Connecting th...

Page 61: ...e 22 Connecting the frames 3 Connect the 24 Vac power cable to the termination board The seven segment LED display should light up 4 Connect the Ethernet cable to the Ethernet connector on the circuit board this step applies to UUKL nondedicated systems only ...

Page 62: ...are installed Check for any cracks in the plastic 2 Hold the door at a 90 angle from the enclosure back as shown in Fig ure 23 3 Align the hinge pegs on the door with the hinge holes on the enclo sure 4 Gently lower the door until it rests securely in the hinge holes 5 Verify that the door swings freely on the hinges and that the magnetic latches hold the door securely when it is closed Figure 23 ...

Page 63: ...et UUKL nondedicated only and LonTalk connections on the BMTX BCU To comply with UUKL a protection device must be wired to the BMTX BCU to reduce transients in the ac power Figure 24 describes connecting an ac power transient protection device to a BMTX BCU Figure 24 AC power transient protection wiring to the BMTX BCU ...

Page 64: ...edicated only and the LonTalk connection to the BMTX BCU Figure 25 Ethernet UUKL nondedicated only and LonTalk connection locations on the BMTX BCU Ethernet connection LonTalk connections Note A fully configured BCU draws a maximum of 25 VA from the power transformer No other devices may be powered from the transformer ...

Page 65: ... system FSCS must be installed in the same room as the FSCS It must be installed within 20 feet of the FSCS Cables between the FACP and Tracer MP581 must be in conduit IMPORTANT Wiring between the Tracer MP581 and the FACP and between the Tracer MP581 and the FSCS point wiring must be in conduit The conduit requirement is necessary since the binary inputs to the Tracer MP581 are not supervised Wir...

Page 66: ... C to 95 C Humidity 10 90 non condensing Altitude 6500 ft 2000 m Installation Category 3 Pollution Degree 2 High voltage power require ments North America 120 Vac 1 A maximum 1 phase Weight Mounting surface must be able to support 25 lb 12 kg Analog to digital conversion Digital to analog conversion 12 bit 12 bit Microprocessor Processor clock speed Motorola MC68332 20 MHz Memory RAM 256 kB 16 bit...

Page 67: ... to reduce wiring costs CAUTION Equipment damage Install the Tracer MP581 in a location that is out of direct sunlight Fail ure to do so may cause the Tracer MP581 to overheat Operating environment requirements Make sure that the operating environment conforms to the specifications listed in Table 14 Table 14 Operating environment specifications Temperature From 40 F to 120 F 40 C to 49 C Humidity...

Page 68: ...e that the mounting location has enough room to meet the mini mum clearances shown in Figure 26 Figure 27 on page 57 shows the dimensions of the Tracer MP581 enclosure Figure 26 Minimum clearances for enclosure 24 in 60 cm to fully open door 12 in 30 cm 36 in 90 cm 12 in 30 cm 50 in 130 cm recommended 12 in 30 cm ...

Page 69: ...ocation BAS APG001 EN 57 Figure 27 Tracer MP581 enclosure dimensions Note Six of the twelve knockouts are dual sized knockouts for 1 inch 25 mm and 0 75 inch 19 mm conduit Front view Top view Bottom view Left view Right view ...

Page 70: ...the grounding screw installed Verify this by checking the location shown in Figure 28 The enclosure door is shipped separately If the door has already been attached to the enclosure back remove it To mount the enclosure 1 Using the enclosure as a template mark the location of the four mounting holes on the mounting surface see Figure 28 Figure 28 Enclosure mounting holes Mounting hole four locatio...

Page 71: ... receive high voltage power from a dedicated power circuit Failure to comply may cause control malfunctions A disconnect switch for the dedicated power circuit must be near the controller within easy reach of the operator and marked as the dis connecting device for the controller High voltage power wire conduits or wire bundles must not contain input output wires Failure to comply may cause the co...

Page 72: ...t the top right corner of the enclosure remove the knockout and install 0 5 inch 13 mm conduit see Figure 29 Figure 29 Knockout for high voltage power wires 3 Open or remove the Tracer MP581 door if it is already installed 4 Inside of the enclosure at the top right corner remove the high volt age area cover plate 5 Feed the high voltage power wires into the enclosure 6 Connect the line wire to the...

Page 73: ...res WARNING Hazardous voltage The cover plate must be in place when the controller is operating Fail ure to replace the cover plate could result in death or serious injury 10 On a label record the location of the circuit breaker panel and the electrical circuit Attach the label to the cover plate ...

Page 74: ...ecially important in areas of high EMI or RFI always check the quality of the ground regardless of location WARNING Hazardous voltage The cover plate must be in place when the controller is operating Fail ure to replace the cover plate could result in death or serious injury If the earth ground has a voltage of more than 4 Vac use a different ground Failure to do so could result in death or seriou...

Page 75: ...EMI RFI considerations BAS APG001 EN 63 Figure 31 Checking the earth ground ...

Page 76: ... not exceed 300 ft 100 m for thermistors and 0 10 Vdc inputs and 1 000 ft 300 m for 0 20 mA inputs Analog output wires must not exceed 1 000 ft 300 m for 0 10 Vdc outputs and 0 20 mA outputs Do not run input output wires in the same wire bundle with high voltage power wires Running input output wires with 24 Vac power wires is acceptable but the input wire must be shielded Terminate input output w...

Page 77: ...n provide low voltage power to inputs and outputs Figure 33 on page 66 shows the location of the low voltage screw terminals on the termination board The following limitations apply Four 24 Vdc screw terminals supply a total of up to 250 mA of power Two 24 Vac screw terminals supply a total of up to 17 VA of power The 50 VA of available power supplies both the 24 Vac screw terminals and binary out...

Page 78: ...es To make sure that the wires lie flat use the wire strip guide on the termination board to strip input output wires to the correct length Figure 33 Screw terminal locations Binary outputs Common terminals Signal terminals 24 Vac power Analog outputs Universal inputs IN1 IN4 can accept RTDs inputs Wire strip guide 24 Vdc power LonTalk screw terminals LonTalk jack for Rover service tool I O bus fo...

Page 79: ... binary input 1 Connect the common wire to a common terminal as shown in Figure 34 Note that because the common terminals are in parallel you can wire the common wire to any available common terminal 2 Connect the shield wire to a common terminal at the termination board and tape it back at the input device 3 Connect the signal wire to an available input terminal IN1 IN12 4 Use the Rover service t...

Page 80: ...a common terminal at the termination board and tape it back at the output device see Figure 35 Do not use the shield wire as the common connection 2 Connect the signal wire to an available analog output terminal AO1 AO6 3 Connect the supply wire to a 24 Vac terminal as required 4 Use the Rover service tool to configure the analog output Figure 35 Wiring analog outputs 0 10 Vdc output Load 500 Ω 30...

Page 81: ...y output 1 Connect the common wire to a common terminal as shown in Figure 36 2 Connect the shield wire to a common terminal at the termination board and tape it back at the output device 3 Connect the signal wire to an available binary output terminal BO1 BO6 4 Use the Rover service tool to configure the binary output Note When controlling coil based loads such as pilot relays do not forget to ac...

Page 82: ...the signal and common screw terminals The measured voltage should be less than 0 1 Vdc If the voltage is greater than this the input readings may be offset CAUTION Equipment damage Continue to step 4 only if you completed steps 2 and 3 successfully Measuring resistance may damage the meter if the voltage is too high 4 Set the multi meter to measure resistance If you completed steps 2 and 3 success...

Page 83: ...ctions have been made The wire may have an induced voltage somewhere along its length 2 Set the multi meter to measure Vdc then measure the voltage across the binary output at the common and signal screw terminals The measured voltage should be less than 0 1 Vdc If the it is greater than this a shared power supply may be incorrectly connected Check the wire to make sure that no additional connecti...

Page 84: ...onal connec tions have been made CAUTION Equipment damage Continue to step 4 only if you completed steps 2 and 3 successfully Measuring resistance may damage the meter if the voltage is too high 4 Set the multi meter to measure resistance If you completed steps 2 and 3 successfully measure the resistance across the analog output at the signal and common screw terminals The resistance should be gre...

Page 85: ...oltage across the analog output at the signal and common screw terminals The measured voltage should be less than 0 1 Vdc If the voltage is greater than this a shared power supply may be incorrectly con nected Check along the wire to make sure that no additional connec tions have been made ...

Page 86: ...al If this is the first LonTalk controller on the daisy chain place a 105 Ω termination resistor across the LonTalk screw terminals Figure 37 Wiring the first device to the LonTalk connection on the termination board 2 At the next Tracer MP581 or other LonTalk controller on the link Connect the white wires to the first and third LonTalk screw ter minals as shown in Figure 38 on page 75 Connect the...

Page 87: ...LonTalk link Connect the white wire to the first LonTalk screw terminal Connect the black wire to the second LonTalk screw terminal Place a 105 Ω termination resistor across the LonTalk screw terminals Figure 38 Wiring the next device to the LonTalk connection on the termination board ...

Page 88: ...termination board To install the circuit board 1 Open the enclosure door 2 Verify that the 24 Vac power cable is not connected to the termination board see Figure 41 on page 78 3 Hold the top plastic frame which holds the circuit board at a 90 angle to the bottom frame as shown in Figure 39 Figure 39 Connecting the cables 4 Connect the 60 pin cable to the 60 pin slot then connect the 20 pin cable ...

Page 89: ...Connecting the frames 6 Locate the 24 Vac power connector on the termination board see Figure 41 on page 78 Remove the mating plug with screw terminals 7 Attach the 24 Vac power supply cable to the screw terminals on the mating plug 8 Connect the mating plug to the 24 Vac power connector on the termi nation board The green status LED should light up 9 Check status LEDs according to the information...

Page 90: ...Chapter 5 Installing the Tracer MP581 programmable controller 78 BAS APG001 EN Figure 41 24 Vac power supply cable connection 24 Vac power connector ...

Page 91: ... in conjunction with a service tool or BAS to Identify a device Add a device to the active group Verify PCMCIA communications Make the green Status LED wink to verify that the controller is communicating on the link Refer to the Rover Operation and Programming guide EMTX SVX01D EN for information on how to use the Service Pin button Interpreting LEDs The information in this section will help you i...

Page 92: ...end device Table 18 describes the LED states Table 18 Binary output LEDs LED activity Explanation LED is on continuously The relay output is energized LED is off continuously The relay output is de energized or there is no power to the board Table 19 Red Service LED LED activity Explanation LED is off continuously when power is applied to the controller The controller is operating normally LED is ...

Page 93: ...eived LED is off continuously Either the power is off or the controller has malfunctioned 1 By sending a request from the Rover service tool you can request the controller s green LED to blink wink a notification that the controller received the signal and is communicating Table 21 Yellow Comm LED LED activity Explanation LED is off continuously The controller is not detecting any communica tion n...

Page 94: ...he enclosure as shown in Figure 43 on page 82 Figure 43 Aligning the enclosure door 3 Align the hinge pegs on the door with the hinge holes on the enclosure 4 Gently lower the door until it rests securely in the hinge holes 5 Verify that the door swings freely on the hinges and that the magnetic latches hold the door securely when it is closed Removing the door Remove the door to simplify wiring o...

Page 95: ...Installing the door BAS APG001 EN 83 2 For doors with an operator display disconnect the operator display cable from operator display 3 Lift the door to pull the hinges from the hinge holes ...

Page 96: ...Chapter 5 Installing the Tracer MP581 programmable controller 84 BAS APG001 EN ...

Page 97: ...to the back piece of a metal enclosure Removable metal cover Make sure that the operating environment conforms to the specifications listed in Table 22 Dimensions and clearances are illustrated in Figure 44 on page 86 Table 22 Operating environment specifications Temperature From 40 F to 120 F 40 C to 49 C Humidity 5 93 non condensing Power 24 Vac 50 60 Hz 10 VA main board and 6 VA max per binary ...

Page 98: ...nvironment protected from the elements Where public access is restricted to minimize the possibility of tam pering or vandalism Near the controlled equipment to reduce wiring costs Where it is easily accessible for service personnel In conduit in the same room and no more than 20 ft 6 1 m from the FACP 1 in 25 mm 1 in 25 mm 2 in 51 mm 2 in 51 mm 9 in 229 mm 10 37 in 263 mm width with cover 2 25 in...

Page 99: ...t of the enclosure and remove the cover 2 Using the enclosure as a template mark the location of the four mounting holes on the mounting surface Figure 46 on page 88 3 Set the enclosure aside and drill holes for the screws at the marked locations 4 Drill holes for 10 5 mm screws or 10 wall anchors Use wall anchors if the mounting surface is dry wall or masonry 5 Insert wall anchors if needed 6 Sec...

Page 100: ...The transformer must be sized to provide adequate power to the EX2 module 10 VA and outputs a maximum of 6 VA per binary output Please read the warnings and cautions before proceeding WARNING Hazardous voltage Before making line voltage electrical connections lock open the supply power disconnect switch Failure to do so could result in death or seri ous injury WARNING Hazardous voltage Make sure t...

Page 101: ...d the preceding warnings and cautions To connect ac power wiring to the enclosure 1 Remove the cover of the enclosure 2 Remove the knockout for the 0 5 in 13 mm conduit from the enclo sure and attach the conduit 3 Feed the power wire into the enclosure 4 When mounting on dry wall or other non conductive surface connect an earth ground to the earth ground screw on the enclosure Figure 47 on page 90...

Page 102: ...Note If a power transformer must be shared between EX 2 modules an example would be at the FSCS the VA rating on output is 0 6 VA This is enough to run any LED or sonalent provided on the FSCS A maximum of 10 VA would be available to run other items All LEDs and sonic alerts are On during the LED test ...

Page 103: ...ed pair Existing sites that have already been wired with low capacitance 18 gauge shielded twisted pair with stranded tinned copper conductors Trane approved purple jacketed wire don t have to be rewired This shielded wire will work if properly terminated Total I O wiring length cannot exceed 1000 ft 300 m At the first three modules splice the shield with the shield from the next section of commun...

Page 104: ...Chapter 6 Installing the EX2 expansion module 92 BAS APG001 EN Figure 49 I O bus wiring example 2 ...

Page 105: ...he fol lowing requirements All wiring must be in accordance with the National Electrical Code and local codes Use only 18 AWG twisted pair wire with stranded tinned copper conductors Binary output wiring must not exceed 20 ft 6 1 m and must be in conduit Binary input wiring must not exceed 20 ft 6 1 m and must be in conduit Analog and 24 Vdc output wiring distances depend on the specifica tions of...

Page 106: ...the following 0 10 Vdc 0 20 mA Analog output and universal input setup Configure each analog output and universal input using a LonTalk ser vice tool such as Trane s Rover service tool The service tool requires the Tracer MP581 software plug in to configure an EX2 EX2 modules receive their configuration information from the Tracer MP581 controller they communicate with You can do online configurat...

Page 107: ...Analog output and universal input setup BAS APG001 EN 95 Figure 51 Typical input output terminal wiring diagram for the EX2 expansion module ...

Page 108: ...LED activity Binary output LEDs Status LED TX and RX communications LEDs Note Each binary output LED reflects the status of the output relay on the circuit board It may or may not reflect the status of the equipment the binary output is controlling Field wiring determines whether the state of the binary output LED also applies to the status of the end device Table 24 describes the LED states Table...

Page 109: ...Ds LED activity Explanation Both LEDs blink regularly The EX2 is communicating with the Tracer MP580 581 on the I O bus If the LEDs blink nor mally but the EX2 is not working properly make sure that I O bus addresses are not duplicated Both LEDs are off continuously The EX2 is not communicating on the I O bus Either the I O bus wiring is faulty or the Tracer MP580 581 has not been configured to us...

Page 110: ...Chapter 6 Installing the EX2 expansion module 98 BAS APG001 EN ...

Page 111: ...s UL 864 49 2 a The maximum time allowed from when an acti vation signal is received until a fire or smoke safety function is initiated An activation signal could be from the FACP of the FSCS 15 seconds The maximum time allowed between a feed back signal activation and an FSCS panel indi cation either audio or LED A feedback signal will typically be a binary value either hard wired or communicated...

Page 112: ...vation or de activation functions in place prior to the automatic control sequence 4 All other manual or automatic operation used for normal building operation For programming purposes the priority list in descending order is 1 Any manual control of dampers fans and smoke control panel control 2 Automatic smoke control system reaction 3 System test processes such as normal HVAC control lamp tests ...

Page 113: ...larm to analog variable 1 and sets a binary variable to hold the output at that value That binary variable is held until all alarms are cleared by the fire smoke control system Table 28 Operational priority Current state of system Manual override Automatic smoke alarm System self test Panel lamp test HVAC nondedicated Next state of system Manual override N A Actuator is overridden System self test...

Page 114: ... clears the floor alarms value one program execution sooner than when using just the binary variable smoke AlarmAllFloor To send a smoke alarm to any floor see Figure 54 on page 103 The relevant floor smoke alarm is communicated to the smoke control panel and mechanical system via a custom binding Figure 53 Subsequent alarms First reaction ...

Page 115: ... interpreted to mean that any smoke zone alarm is annunciated by the smoke control panel regardless of alarm order If any smoke zone alarm is triggered the alarm state is sent to MP580 controllers that interface with and control the smoke control panel Figure 54 illustrates a means of programming to meet requirements 33 2 1 and 33 2 2 An additional value smokeAlarmAny is broadcast as a means to pr...

Page 116: ...the smoke alarm LEDs on the FSCP For example a smoke alarm for floor 1 is received The mechanical system reacts by pressurizing floor 2 and exhausting floor 1 Following that floor 2 goes into smoke alarm The alarm needs to be annunciated even though the mechanical system does not react In this case nvoSwitch06 passes the smoke alarm state to MP580 3 by using a custom binding At MP580 3 the binary ...

Page 117: ...he reaction to each floor alarm The first technique which is the most comprehensive and requires the least programming will be discussed In either case a failure must be annunciated at the smoke control panel both visually and audibly It is acceptable to use the Trouble LED the relevant failure LED and the interior audio alert An AST can be triggered either from a BMTX BCU or manually at the smoke...

Page 118: ...is somewhat ambiguous If the fault occurs in the smoke alarm mode the alarm can be reset when the request stops However an AST based fault must be annunciated and held until the fault is repaired It is not clear what faults are allowed to clear the alarm as there is no reset fault function available on the smoke control panel Discussion with UL revealed that it is acceptable to annunciate the alar...

Page 119: ...Weekly self test of dedicated systems BAS APG001 EN 107 Figure 57 needs to be introduced Figure 57 ast overridesense 3 13 2006 ...

Page 120: ...n control along with automatic and manual override self tests The existence of the self test signal is indicated by the binary variable selfTestEnable Once self testing is enabled dampers and fans become controlled by a direction variable The variables selfTestEnable and selfTestDirection along with accompanying switch logic are not necessary in non dedicated systems Figure 58 Effect of AST on dam...

Page 121: ...lag to Tracer MP581s controlling the FSCS which results in the FSCS turning on a fail light Figure 59 shows an example of TGP used to determine a status of the outdoor air return air and exhaust air dampers Each damper position status is compared to the relevant damper position request and a normal fail state flag is derived This segment will trigger an alarm event and send a fail flag to the Trac...

Page 122: ...le there is a failure On the other hand the triggering of a system self test either scheduled or manual will reset any failures discovered during a previous system self test Figure 60 and Figure 61 on page 111 show the changes necessary to any dedicated system failure test routine In either case the connected BCU should be programmed to store the actuator failure in the alarm log Binary variable 2...

Page 123: ...End process verification BAS APG001 EN 111 Figure 61 ast actuator fail checkb 3 13 06 ...

Page 124: ...rogrammer chooses to test from both ends this process will fully test the communication status of the MP581 to MP581 system Other communication status such as that of the I O bus EX2 modules and BMTX BCU can also be transferred to the central MP581 The basic watchdog method consists of sending an alternating signal from one MP581 to another MP581 A custom binding is necessary for the MP581 to MP58...

Page 125: ...cess There are three communication signals used in the smoke control system BCU to MP581 MP581 to MP581 and MP581 to EX 2 The status of all three communication types needs to be indicated at the smoke control panel Each MP581 collects communication status information from the connected BCU and its associated EX 2 modules and transmits the status back to the smoke control panel MP581 A custom bindi...

Page 126: ...581 all the communication status signals are collected together to determine overall communication status Figure 66 on page 115 shows a TGP sample of the programming Each MP581 in the smoke control system sends its own watchdog signal its Tracer Summit communication status and its EX 2 module communication status In addition the main FSCP control MP581 will have its own Tracer Summit communication...

Page 127: ...he FSCP Comm Fault LED is controlled A sample TGP fragment is shown in Figure 67 The FSCP Comm Fault LED is also controlled by the lamp test function If a lamp test is not currently running the FSCP Comm Fault is controlled by the overall communication status of the system Figure 67 Control of the FSCP Comm Fault LED ...

Page 128: ...ator lights to come on However an alarm takes precedence over the lamp test Figure 68 shows a TGP program fragment that will enable a lamp test relevant to its own LEDs while broadcasting a lamp test request to other Tracer MP581s An audible alarm test and silence routine are included Figure 68 Sample TGP showing lamp test and audio alarm silence routine ...

Page 129: ... LEDs on the smoke control panel Figure 69 shows an example of how to use the lamp test signal in combination with any smoke alarm information Figure 69 Example of lamp test controlling FSCP damper LEDs Note Note that the lamp test is not allowed to start or run if there is a smoke alarm ...

Page 130: ...ke control or manual override commands For details regarding priority see Table 28 on page 101 Figure 70 shows an example of programming for a nondedicated system to implement the priorities in Table 28 In this figure the smoke control dampers for Floor 1 are controlled The actuator position either Open or Closed will default to whatever the HVAC system commands There are two states that will turn...

Page 131: ...careful sizing of smoke control supply air damper and relief damper is necessary to use smoke purge and protect dampers Constant volume system For constant volume systems in smoke control mode return exhaust dampers are open Therefore separate duct pressure relief is not required but may be necessary on each floor or in each smoke control zone as it is for VAV systems Supply dampers should be size...

Page 132: ...Chapter 7 Programming 120 BAS APG001 EN ...

Page 133: ...ch network variable is a standard type This standard type is referred to as a standard network variable type SNVT To bind two variables together they must be the same SNVT For example an output of type SNVT_temp_p can only be bound to an input of type SNVT_temp_p For more information about SNVTs see the LonMark Web site www lon mark org From that Web site you can download the official list of SNVT...

Page 134: ...ercent SNVT_lev_percent which are heartbeated variables All necessary information can be received using nviSwitch SNVT_switch and nviPercent SNVT_lev_percent Heartbeated variables are a means of indicating freshness of information and or quality of the communication link For more information regarding heartbeating see Understanding bindings on page 130 Table 29 Tracer MP580 581 generic network var...

Page 135: ...within 200 seconds of the occurrence of the adverse condition fault or the restoration to normal UL 864 49 2 b As there is no built in means of verifying inter MP581 communication status a programmed solution must be used While a network variable heartbeat can be used to verify status it can take up to 300 seconds for a communication failure to be noticed This solution would fail to meet the requi...

Page 136: ... 31 Watchdog communication alarm custom bindings Function Originator Network variable Destination Communication check from hub multi vibrator MP580 2 nvoSwitch36 Mechanical system nviSwitch38 nvoSwitch36 MP580 3 nviSwitch38 nvoSwitch36 MP580 4 nviSwitch38 Communication check to hub multi vibrator Mechanical system nvoSwitch38 MP580 2 nviSwitch34 Communication check to hub FSCP unit multi vibrator ...

Page 137: ...Custom bindings BAS APG001 EN 125 Figure 71 Watchdog communication in a hub based system System hubs Mechanical system Smoke control panel interface MP580 A MP580 B MP580 1 MP580 2 MP580 3 MP580 4 ...

Page 138: ...2 MP580 3 nviSwitch37 nvoSwitch02 MP580 4 nviSwitch37 smokeAlarmFloor01 MP580 2 nvoSwitch05 Mechanical system nviSwitch20 nvoSwitch05 MP580 3 nviSwitch09 smokeAlarmFloor02 MP580 2 nvoSwitch06 Mechanical system nviSwitch21 nvoSwitch06 MP580 3 nviSwitch12 smokeAlarmFloor03 MP580 2 nvoSwitch07 Mechanical system nviSwitch22 nvoSwitch07 MP580 4 nviSwitch08 smokeAlarmFloor04 MP580 2 nvoSwitch08 Mechanic...

Page 139: ...perManFloor01 MP580 3 nvoPercent03 Mechanical system nviPercent03 supplyDamperManFloor02 MP580 3 nvoPercent04 Mechanical system nviPercent04 returnDamperManFloor02 MP580 3 nvoPercent05 Mechanical system nviPercent05 returnFanManControl MP580 4 nvoPercent01 Mechanical system nviPercent11 supplyDamperManFloor03 MP580 4 nvoPercent02 Mechanical system nviPercent06 returnDamperManFloor03 MP580 4 nvoPer...

Page 140: ...tatus Mechanical system nvoPercent04 MP580 3 nviPercent01 raDamperStatus Mechanical system nvoPercent05 MP580 2 nviPercent01 eaDamperStatus Mechanical system nvoPercent06 MP580 4 nviPercent01 supplyDamperFloor01 Mechanical system nvoPercent07 MP580 3 nviPercent02 returnDamperFloor01 Mechanical system nvoPercent08 MP580 3 nviPercent03 supplyDamperFloor02 Mechanical system nvoPercent09 MP580 3 nviPe...

Page 141: ...2 stairFanFail Mechanical system nvoSwitch25 MP580 2 nviSwitch02 supplyDamperFloor01Fail Mechanical system nvoSwitch26 MP580 3 nviSwitch07 returnDamperFloor01Fail Mechanical system nvoSwitch27 MP580 3 nviSwitch08 supplyDamperFloor02Fail Mechanical system nvoSwitch28 MP580 3 nviSwitch10 returnDamperFloor02Fail Mechanical system nvoSwitch29 MP580 3 nviSwitch11 supplyDamperFloor03Fail Mechanical syst...

Page 142: ...epts involved in bindings as well as their limitations The Echelon Corporation the company that created LonWorks and the LonTalk protocol refers to bindings as connections Echelon defines connections as the implicit addressing established during binding A connection links one or more logical outputs network variables to one or more logical inputs Bindings provide a very efficient way to communicat...

Page 143: ... within the domain The node number within the subnet Domain subnet and node number are used to determine a custom bound variable s origin and destination s Binding types The custom bindings necessary to use in a smoke control system fall into the following two categories Subnet node A one to one binding in which one output NV is bound to one input NV Group A one to many binding in which one output...

Page 144: ...ng Address table A device s address table resides in non volatile memory The address table serves several functions Its main purpose is to hold the network DSN or group addresses of the devices that will receive outgoing binding data Subnet node bindings use DSN destinations in the sending device s corresponding address table entries Group bindings use group address destinations in the sending dev...

Page 145: ...1 8 as the destination And it shows that the device is the second member of Group 1 which has a total of three members Table 38 Address table Designing bindings On a LonWorks job binding connections should be designed and documented just like wiring connections are designed and documented on shop drawings Follow these rules limits and the methodology provided when designing bindings Binding rules ...

Page 146: ...exception it has only 14 available address table entries 5 A maximum of 256 groups are possible per domain This limit should not be a factor in most designs 6 A group binding that uses acknowledged service can have a maximum of 64 members A group binding that uses unacknowledged or unacknowledged repeated service can have an unlimited number of members Stacking bindings on unique binding paths Onc...

Page 147: ... an address table entry in both MP581 A and MP581 B Both MP581s are now transmitters of data Both are subnet node bindings Figure 75 Two way subnet node bindings A group binding is shown in Figure 76 In this case in every member s address table an entry number and group number are listed A group binding made in this way is also called a fan out binding ...

Page 148: ...n Figure 77 One consists of MP581 A B and C while the other has members MP581 A B C and D Even though one is a subset of the other it is set apart by having a different amount of members In this case MP581 A B and C have two group entries in their respective address table MP581 D has just one group entry in its address table ...

Page 149: ...ing which group what their member number is within that group and size of the group Once this entry is made any member of the group can now transmit information to the other members within that particular group Figure 78 illustrates this concept For example the user defines a group binding which has Device A sending nvoSwitch01 to Device B and Device C When the binding is ...

Page 150: ...this definition has exactly the same membership list as in Group 1 No additional entry into the address table is necessary to define the group All three of the group binding configurations in Figure 78 use the same entry in each devices address table Figure 78 Group bindings with the same membership Mixed bindings are illustrated in Figure 79 For this configuration MP581 A B C and D have one group...

Page 151: ...Understanding bindings BAS APG001 EN 139 Figure 79 Mixed subnet node and group bindings ...

Page 152: ...Chapter 8 Network variable bindings 140 BAS APG001 EN ...

Page 153: ...Protection Association Quincy MA NFPA 1996 Recommended Practice for Smoke Control Systems NFPA 92A National Fire Protection Association Quincy MA NFPA 1996 Standard for the Installation of Air Conditioning and Ventilating Systems NFPA 90A National Fire Protection Association Quincy MA NFPA 1997 Life Safety Code NFPA 101 National Fire Protection Association Quincy MA SFPE 1995 Fire Protection Engin...

Page 154: ...Appendix A References 142 BAS APG001 EN ...

Page 155: ......

Page 156: ... should perform the installa tion and servicing of equipment referred to in this publication Literature Order Number BAS APG001 EN File Number SV ES BAS APG001 0906 Supersedes SV ES BAS APG001 09 00 Stocking Location Inland Trane A business of American Standard Companies www trane com For more information contact your local Trane office or e mail us at comfort trane com ...

Reviews:

No comments

Related manuals for Engineered Smoke Control System

Brand: CAME Pages: 12

Brand: CAME Pages: 16

Brand: Ultrak Pages: 41

Brand: Zander Aachen Pages: 10

Brand: easydriver Pages: 26

Brand: Calsense Pages: 10

Brand: Jafar Pages: 10

PROFINET BNI PNT-508-055-P067

Brand: Balluff Pages: 84

Max Charge MC-624

Brand: Balmar Pages: 8

MAX CHARGE MC-614

Brand: Balmar Pages: 20

Brand: Fanimation Pages: 2

Brand: M2M Pages: 24

Ecomot300 AC2630

Brand: IFM Electronic Pages: 111

Brand: FEAS Pages: 4

Brand: Anilam Pages: 31

Brand: Rinnai Pages: 7

Brand: XP Metal Detectors Pages: 4

Brand: Raypak Pages: 2

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands