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IM 689-2

Field Wiring

Following are descriptions of the various field wiring requirements. A typical field wiring diagram is
shown in Figure 5. Wiring must comply with the National Electrical Code and all local codes and
ordinances. The warranty is void if wiring is not in accordance with these instructions.

The panel is divided into high and low voltage sections by a sheet metal barrier. The power wiring
should enter the high voltage section through one of the 7/8-inch (22 mm) openings. External
receptacles and a terminal block are provided for the low-voltage communications wiring.

Figure 5. Typical Field Wiring Schematic for MicroTech Network

TS2

BACdrop

Hot
Neutral

100 – 240 Vac
Power

L2
L1

GRD

Notes:

1. Twisted, shielded pair cable must meet the following

minimum requirements: 300 V, 60°C, 20 AWG, polyethylene
insulated, with a PVC outer jacket and drain wire (Belden
8762 or equivalent). Some local codes may require the use
of plenum rated cable.

2. 10BaseT Ethernet cable. To directly connect a PC to the

Ethernet port, a hub or a special crossover cable must be
used.

3. Cable length must not exceed 5000 ft (1524 m).
4. Standard serial cable. A null modem is not required.

See notes 1 & 3

Self-contained AC

Port B

GND

TB7

Reciprocating

chiller

Port B

139

TB4

Screw chiller

Port B

55

BLK

WHT

B+

B–

138

137

54

53

Comm B

UVC (325)

1

2

PNK

GRY

Comm B

UVC (125)

4

5

PNK

GRY

RJ-45

3rd-party BAS

See note 2

TB1

Centrifugal chiller

(series 200)

Port B

85

86

84

TB2

Applied rooftop

Port B

130

128

129

Legend

Field wiring terminal
Field wiring: discrete

Factory wiring

Field wiring: twisted, shielded pair cable
with drain wire

(see note 1)

B+

Crimp or solder splice

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

BLK

WHT

Comm B

UVC (325)

1

2

PNK

GRY

Comm B

UVC (325)

1

2

PNK

GRY

Comm B

UVC (325)

1

2

PNK

GRY

Ethernet

DB9

PC

PC

+
–

GRD

Network

See note 4

Field wiring: 10BaseT Ethernet
Standard serial cable

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Содержание IM 689-2

Страница 1: ...Installation Maintenance Data IM 689 2 Group McQuay Controls Part Number 629952Y Date January 2001 2001 McQuay International MicroTech BACdrop Gateway BACnet to MicroTech Communications Gateway ...

Страница 2: ... Communications Trunk 21 Task 4 Connecting the BACdrop Gateway to the Trunk 22 Task 5 Connecting the Controllers and Verifying Communications 23 BACdrop Setup Wizard User s Guide 29 System Requirements 29 Installing the BACdrop Setup Wizard 30 Starting the BACdrop Setup Wizard 30 Working With the BACdrop Gateway 31 System Information Tool 32 Configure Controller List Tool 33 Configure Network Numb...

Страница 3: ...work Communications Problems 46 Troubleshooting the SBC 47 Jumper Settings 47 Ethernet Status LEDs 50 Parts List 50 McQuay AAF and MicroTech are registered trademarks of McQuay International BACdrop Monitor and Open Protocol are trademarks of McQuay International All other trademarks are the property of their respective owners ...

Страница 4: ...re Description Document BDIP for MicroTech air cooled screw chiller applications type ALS BD 01 BDIP for MicroTech water cooled screw chiller applications types WHS PFS B PFS C BD 02 BDIP for MicroTech scroll chiller applications type AGZ BD 03 BDIP for MicroTech large tonnage water cooled screw chiller applications type PES with J E Hall compressor BD 04 BDIP for MicroTech series 100 centrifugal ...

Страница 5: ...l device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his or her own expense McQuay International di...

Страница 6: ...cific BACnet features services objects character sets etc that BACdrop supports refer to the two BACnet Protocol Implementation Conformance Statements see Table 1 Component Data Figure 1 shows the physical layout of the BACdrop panel The major components of the gateway are a single board computer SBC which includes an onboard 10BaseT Ethernet port and a power supply PS with a circuit breaker CB Th...

Страница 7: ... 9600 bps The field connection point is a standard DB9 female receptacle on the side of the panel To connect the BACdrop gateway to the PC use a standard serial cable not a null modem cable Figure 1 Control Panel Layout CB PS SBC J1 connector RJ 45 J22 L2 L1 GRD Ethernet port Network port PC port Flash memory chip Ethernet status LEDs Speaker 5 Vdc power in Power Supply The BACdrop gateway s power...

Страница 8: ...mation Packet BDIP documents describe the various portions of the standard PMF See Table 1 Custom PMF files and BDIPs can be written for custom MicroTech control applications Contact your McQuay representative for a quotation Compatibility The PMF file associates BACnet objects with specific memory locations within the MicroTech controllers These memory locations are defined by the MicroTech appli...

Страница 9: ...tion in the MicroTech network This allows it to obtain data from its level 2 slave controllers in the most efficient way possible When a MicroTech supervisory controller is used it must occupy the level 1 master position forcing the BACdrop panel to a level 2 slave position This means that the level 1 controller e g CSC must poll the BACdrop for all requests it has of other controllers e g chiller...

Страница 10: ... also capable of this although its capabilities are more limited In a BACnet BAS that is integrated with a MicroTech network via BACdrop the user interface software for the main front end PC should always be provided by the systems integration company When the BACdrop gateway is level 1 see Figure 2 above communications between the PC containing Monitor software and other MicroTech controllers on ...

Страница 11: ...l dimensions are shown in Figure 4 Table 2 BACdrop Gateway Environmental Specifications Panel state Temperature Relative humidity Operating 32 140 F 0 60 C 20 90 noncondensing In storage 0 158 F 18 70 C 20 90 noncondensing Figure 4 BACdrop Panel Dimensions Note Values in parentheses are in millimeters Front View Side View Hinge 1 44 37 0 88 22 Bottom View 9 44 240 10BaseT Ethernet port RJ 45 exter...

Страница 12: ... jacket and drain wire Belden 8762 or equivalent Some local codes may require the use of plenum rated cable 2 10BaseT Ethernet cable To directly connect a PC to the Ethernet port a hub or a special crossover cable must be used 3 Cable length must not exceed 5000 ft 1524 m 4 Standard serial cable A null modem is not required See notes 1 3 Self contained AC Port B GND TB7 Reciprocating chiller Port ...

Страница 13: ... controller and the unit controllers are level 2 controllers There are no level 3 controllers except in the case of series 100 old style centrifugal chillers which have a level 2 display processor and a level 3 unit control processor About MicroTech Network Architecture All controllers in a MicroTech network are assigned a level level 1 level 2 or level 3 All networks must have one level 1 control...

Страница 14: ...B plug is disconnected from every MicroTech controller MCB on the communications trunk being wired These plugs will be connected during the commissioning procedure This is a precaution to prevent stray high voltage from damaging the controllers Any voltage more than 12 V can damage the board s communications hardware The BACdrop gateway does not have a B port that can be easily disconnected so do ...

Страница 15: ...y unit is allowed to operate it must be commissioned in accordance with the instructions in the MicroTech unit controller installation literature and the model specific unit installation literature Required and Recommended Tools To commission the network you need the following tools 1 Voltmeter 2 Ohmmeter 3 PC Windows 95 98 equipped with Ethernet card and BACdrop Setup Wizard software see note bel...

Страница 16: ...ed the HI digit and the second digit is called the LO digit Thus for the L3 address 0F the HI digit is 0 and the LO digit is F Table 4 is a hexadecimal to decimal conversion guide Figure 6 MicroTech Network Address 01 0F L2 HI digit L2 LO digit L3 HI digit L3 LO digit With the exception of the BACdrop gateway see below a MicroTech controller s address is determined by its hex switch setting and it...

Страница 17: ...Device instance for each MicroTech controller In addition each schedule should list the MicroTech Network Number and the version number of the BACdrop s point mapping file PMF An example of a possible address schedule is shown in Figure 8 Elements of the schedule are discussed below A blank address schedule which may be photocopied is included as the last page of this manual Assigning MicroTech Ad...

Страница 18: ...s it is a good idea to contact the BAS representative prior to configuring the BACdrop gateway to find out whether they have any special requirements for these numbers If they do their preferred numbers can be recorded in the schedule If they do not the Setup Wizard s default numbers can be recorded in the schedule and given to the BAS representative As shown in Figure 8 the default MicroTech netw...

Страница 19: ...teway The first task in commissioning a BACdrop network is to configure the gateway with the BACdrop Setup Wizard Configuration essentially involves entering the prepared address schedule into the SBC s memory This allows the BACdrop gateway to properly translate and route data for every mapped controller on the MicroTech network For most applications all MicroTech controllers should be entered in...

Страница 20: ...inished The Device type entries start by listing the first part of the IDENT the version and revision codes are not included This is intended to help you quickly find the correct MicroTech controller type It cannot be used to check PMF IDENT software compatibility Any of this configuration data can be modified later by selecting the device and then clicking the Modify button 7 Repeat step 6 until ...

Страница 21: ...n accordance with the instructions in the Field Wiring section of this manual This procedure will verify that there are no shorts or stray voltages anywhere in the communications trunk Before beginning make sure that the port B connectors are disconnected from every controller on the trunk On the BACdrop gateway the network cable should not yet be connected to the Network terminal block To check t...

Страница 22: ...sioning PC can communicate through it to the MicroTech controllers as they are connected Note This task assumes that your commissioning PC is equipped with an Ethernet adapter If this is not the case you cannot check MicroTech communications through the gateway and this task can be performed now or after task 5 as desired See Task 5 Connecting the Controllers and Verifying Communications for more ...

Страница 23: ...ve If the BAS still has a communications problem it is very likely on the BAS side of the gateway If your PC does not have an Ethernet adapter see Alternate Methods For PCs Without an Ethernet Adapter below To verify MicroTech network communications through the BACdrop gateway 1 Connect the PC to the BACdrop gateway with both the serial cable and the Ethernet crossover cable or two standard Ethern...

Страница 24: ...e at the and ground terminals Refer to Table 6 for the correct voltage levels If no voltage or improper voltage levels are found verify that the controller is energized d Check for proper communication trunk voltages at the field wiring terminals if any or directly on the port connector The trunk must not be connected to the controller when you do this This check assumes that at least one other de...

Страница 25: ...to the BACdrop gateway 9 Go to the next controller and repeat step 8 Do this for each controller being connected to the network Communications must be established between the BACdrop gateway and every controller on its network before the network is turned over to the BAS personnel 10 Disconnect the commissioning PC from the BACdrop gateway The BAS can now be connected to the Ethernet port Table 6 ...

Страница 26: ...RS 232 to RS 485 converter and the BACdrop Setup Wizard Methods 2 and 3 involve the use of Monitor software See Bulletin No IM 474 MicroTech Open Protocol Master Panel for network commissioning procedures that can be easily adapted to methods 2 and 3 To verify MicroTech network communications with an RS 232 to RS 485 converter 1 Connect the RS 232 to RS 485 converter between the PC serial port and...

Страница 27: ...cted from the network or turned off until every repetition of this step is completed a Set the network address hex switch setting to match the address on the prepared address schedule b Turn on power to the MicroTech controller Refer to the controller installation manuals for information on how to turn on power to each controller If the power was already on turn it off and then on again to set the...

Страница 28: ...y to download an updated PMF to the BACdrop gateway 8 Go to the next level 2 controller and repeat step 7 Do this for each controller being connected to the network Communications must be established between the commissioning PC and every controller on the network before the network is turned over to the BAS personnel 9 Disconnect the commissioning PC and converter from the network If the BACdrop ...

Страница 29: ...croTech controllers via mapped BACnet objects Configure MicroTech controller port speeds and port configurations Log BACnet data packets Each software tool is set up as a wizard that takes you step by step through each task showing you cabling diagrams and required communications components when needed System Requirements Hardware Minimum 486 33 MHz processor 500 kb space on the hard disk 8 Mb RAM...

Страница 30: ...installation options Typical Minimum Complete and Custom The Custom option allows you to select individual documents for installation for example BD 06 7 MicroTech Series 200 Centrifugal Chiller Controller All electronic documentation is in PDF format which requires Adobe Acrobat Reader 4 0 to view or print Adobe Acrobat Reader 4 0 is a free program that can be downloaded from the Adobe Web site h...

Страница 31: ...dvanced Options Write Configuration to a File Saves a BACdrop configuration file to the PC s hard disk or a floppy disk Advanced Options Read Configuration from a File Reads and restores a BACdrop configuration file that was previously saved to disk Advanced Options Change Timing Parameters Allows you to change the amount of time the BACdrop gateway waits for responses to MicroTech network request...

Страница 32: ...p MicroTech Address The address of the BACdrop gateway on the MicroTech network This address can be changed with the BACdrop Setup Wizard s Configure Controller List tool Typically a BACdrop gateway s MicroTech address will be 00 00 Configured MicroTech Controller Count The total number of MicroTech controllers that have been defined in the BACdrop configuration file Usually this number will match...

Страница 33: ...roller that has been entered into the configuration file is shown with its MicroTech address controller name or type and Device instance number You can view the information but you cannot change it with this tool Click the Main Screen button to close the System Information tool and return to the Main screen Figure 14 System Information Tool BACdrop Configuration File Screen Configure Controller Li...

Страница 34: ...evice Select the Device type from the drop down list box The Device type entries come directly from the BACdrop PMF The first part of each entry is the prefix of the MicroTech software IDENT The IDENT code is listed to help you quickly identify the proper controller type Device Instance The instance number for the BACnet Device This number becomes part of the Device object s Object_Identifier prop...

Страница 35: ...ntroller List edit screen appears See Figure 16 For descriptions of the data entry fields see Adding a Controller to the Configuration File above After you have entered the new data on the Configure Controller List edit screen click Done to accept the changes or click Cancel to cancel the changes When you accept the changes here the new configuration is held in PC memory it is not permanently save...

Страница 36: ...on to File Backup Tool With the Write Configuration to File tool you can save a backup copy of the BACdrop configuration file to your PC s hard disk or a floppy disk If you ever need to replace the SBC or its flash memory chip the saved configuration file can then be quickly restored with the Read Configuration From File tool see below You may also want to use this tool if you are setting up two o...

Страница 37: ... messages sent between the BAS and the BACdrop gateway All of these tools can be found under the BACnet Network menu Network Diagnostic Scans the MicroTech network for each controller defined in the BACdrop configuration file If a controller is found its software IDENT is read and displayed If a controller is not found an error message is displayed This tool is used to verify network communication...

Страница 38: ...10BaseT crossover or null cable or with two standard 10BaseT cables and a hub A serial connection is not required Figure 20 Network Read Write Tool Cabling Configuration Screen For the Log BACnet Packets tool the Ethernet connection must be over the BACnet BAS or LAN This is because the BACdrop gateway is a passive device and without a supervisory BAS to initiate requests no communications will oc...

Страница 39: ... it is communicating its software IDENT See Figure 23 Figure 23 BACnet Network Diagnostic Tool You can start another network diagnostic test by clicking the Refresh Screen button To stop a test in progress click the Stop Diagnostic button It is worth noting that the IDENT is read from each controller s memory it does not come from the BACdrop configuration file These actual controller IDENTs can b...

Страница 40: ...08 6 would tell you that the mixed air temperature is Analog Input object 7 You must also know the MicroTech network number to use the Network Read Write tool You can find the MicroTech network number by using the System Information tool Reading from Objects When you select the Read function at the top of the screen you can read either the Present_Value property or the Object_Name property from an...

Страница 41: ...e MicroTech Controller menu choose the Configure tool The tool s wizard starts and leads you through the setup You will be asked to verify cable connections and the COM port to be used See below for more information PC Hardware and Cabling Configurations This tool requires a MicroTech PC communications cable which is connected between the PC serial port and the MicroTech controller s A port see no...

Страница 42: ...figured data transmission speeds for the two communications ports These configured speeds can be changed with this tool Communication Port Configuration The port configurations of the two communications ports The controller level is part of the port configuration The port configuration can be changed with this tool The most common level 2 configuration is shown in Figure 26 Checksums The checksums...

Страница 43: ...roTech Network Diagnostic tool 1 Disconnect the level 1 controller from the MicroTech network If the BACdrop gateway is the level 1 controller and it is in the middle of the daisy chain make sure the trunk remains continuous after disconnecting it If the level 1 controller is a MicroTech supervisory controller CSC RMS RMC LLLB disconnect it by unplugging its B port AMP connector 2 On the MicroTech...

Страница 44: ...ing its software IDENT See Figure 29 You can start another network diagnostic test by clicking the Refresh Screen button To stop a test in progress click the Stop Diagnostic button You can also save the test results to a text file by clicking the Write to File button It is worth noting that the IDENT is read from each controller s memory These actual controller IDENTs can be used to verify softwar...

Страница 45: ...teway appears to be dead use the following guidelines to isolate the problem If the gateway is not connected to an Ethernet all of its LEDs will be off Try cycling power by opening and then closing circuit breaker CB The yellow D6 link LED should flash when power is restored You should also hear at least one beep Verify that line voltage power is being supplied to the BACdrop panel and that circui...

Страница 46: ...the BACnet Network Diagnostic tool try using the MicroTech Network Diagnostic tool The BACnet Network Diagnostic tool goes through the gateway and the MicroTech Network Diagnostic tool bypasses the gateway If you can communicate using the MicroTech tool the problem is either in the gateway or you have a level 2 BACdrop on a network with no level 1 MicroTech controller Go to Troubleshooting the SBC...

Страница 47: ...the flash memory chip The 32 pin flash memory chip can be replaced in the field If you have another BACdrop gateway you can try swapping flash chips to isolate the problem Otherwise you can try replacing the flash chip or the entire SBC see the Parts List section below The flash chip is easy to identify It is the only 32 pin chip on the board about 1 5 inches long and it should have a Datalight st...

Страница 48: ... 2 Figure 31 Single Board Computer Jumper Blocks J2 and J4 Figure 32 Single Board Computer Jumper Block J3 Figure 33 Single Board Computer Jumper Block J5 Figure 34 Single Board Computer Jumper Blocks J7 and J8 ...

Страница 49: ...IM 689 2 49 Figure 35 Single Board Computer Jumper Blocks J11 and J12 Figure 36 Single Board Computer Jumper Blocks J14 and J21 Figure 37 Single Board Computer Jumper Blocks J17 and J25 ...

Страница 50: ... 8 NE2000 Ethernet Controller LED Indications LED Indication when lit D3 green Transmit activity D4 red Collision D5 green Receive activity all packets on network D6 yellow Link integrity or testing disabled Parts List Component designation Description Part no SBC Single Board Computer SAT SXPlus Contact McQuay Controls group Flash chip 32 pin Atmel Contact McQuay Controls group PS Power supply Co...

Страница 51: ...IM 689 2 51 MicroTech Network No PMF Version No MicroTech Addr Unit Tag Unit Type Description Compatible IDENTs Device Instance Location ...

Страница 52: ...13600 Industrial Park Boulevard P O Box 1551 Minneapolis MN 55440 USA 763 553 5330 ...

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