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Table 28. Effective occupancy output

nviOccManCmd

nviOccSchedule

Occupancy Sensor
Arbitration Result

Bypass Timer

nvoEffectOccup

Occupied

Does not matter

Occupied

Unoccupied

Does not matter

Zero

Unoccupied

Not zero

Bypass

(a)

(a) Occupied bypass is initiated by either a communicated request (nviOccManCmd = bypass) or a local input (zone sensor timed override ON button).

Bypass

Occupied

Does not matter

(b)

(b) Whenever an update of nviOccManCmd is received indicating Bypass, the bypass timer is set to the nviBypassTime and the countdown starts.

Occupied

Unoccupied

Does not matter

Zero

(b)

Unoccupied

Not zero

(b)

Bypass

(a)

Standby

Does not matter

Zero

(b)

Standby

Not zero

(b)

Bypass

(a)

Not valid

Occupied

Does not matter

(b)

Occupied

Unoccupied

Zero

(b)

Unoccupied

Not zero

(b)

Bypass

(a)

Standby

Does not matter

Zero

Standby

Not zero

Bypass

(a)

Not valid

Occupied

Does not matter

Occupied

Unoccupied

Zero

Standby

(c)

(c) If nviOccManCmd and nviOccSensor are not valid, nviOccSchedule is occupied, the bypass timer is zero, and the binary input is occupancy. Then, the

occupancy binary input can switch the control between occupied and occupied standby.

Not zero

Bypass

(a)

Unoccupied

Does not matter

Zero

Unoccupied

Not zero

Bypass

(a)

Standby

Does not matter

Zero

Standby

Not zero

Bypass

(a)

Not valid

Occupied

Does not matter

Occupied

Unoccupied

Zero

Unoccupied

Not zero

Bypass

(a)

CNT-SVX08F-EN

Troubleshooting

Содержание Tracer MP501

Страница 1: ...g up and servicing of heating ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualif...

Страница 2: ...ult in equipment or property damage only accidents Copyright This document and the information in it are the property of Trane and may not be used or reproduced in whole or in part without written per...

Страница 3: ...ink Wiring and Addressing 11 Location Recommendations 12 Operating Environment Requirements 12 Mounting Recommendations 12 Applications for SCC Mode 13 Inputs for SCC Applications 13 BI1 Occupancy or...

Страница 4: ...c Applications 24 Binary Output 1 Binary Output 2 24 Binary Output 3 24 AO Analog Output 24 Overriding Outputs 24 Wiring Diagrams 24 Sequence of Operations for Generic Mode 28 Power up Sequence 28 Loo...

Страница 5: ...ation and Communication 43 Test Button 43 Manual Output Test 43 Service Pin Button 44 Interpreting LEDs 44 Red Service LED 44 Green Status LED 44 Yellow LonTalk LED 45 Diagnostics 46 Troubleshooting 4...

Страница 6: ...Comfort Control profile and controls space temperature to an active setpoint SCC mode supports the following applications Heating control loop Cooling control loop Two pipe heat cool automatic changeo...

Страница 7: ...0 in 102 mm Each side 1 0 in 25 mm Top and bottom 4 0 in 102 mm Metal Cover Model Front 24 0 in 610 mm Each side 2 0 in 51 mm Top and bottom 1 0 in 25 mm Figure 1 4 in 102 mm 1 in 25 mm 6 31 in 160 mm...

Страница 8: ...CE Emissions EN 50081 1 1992 CISPR 11 Class B EN 61000 3 2 EN 61000 3 3 UL and C UL listed Energy management system UL 94 5V UL flammability rating for plenum use FCC Part 15 Class A Additional Compo...

Страница 9: ...enabled if the input is open The loop is disabled if the input is closed A binary switching device such as a flow switch can be used to enable the control loop Binary Output Actuators and Relays There...

Страница 10: ...ires in the same wire bundle with any ac power wires Note For application specific wiring information and diagrams refer to the sections Applications for SCC Mode p 13 and Applications for Generic Mod...

Страница 11: ...communication link must meet the following requirements All wiring must comply with the National Electrical Code and local codes 22 AWG Level 4 un shielded communications wire recommended for most Com...

Страница 12: ...2 F to 122 F 0 C to 50 C Relative humidity 10 90 non condensing Mounting Recommendations Important Leave the cover on when mounting the MP501 to avoid the possibility of damaging the circuit board dur...

Страница 13: ...es a signal of 0 Vac with open contacts and 24 Vac with closed contacts The binary input can function in two ways as an occupancy input or as a generic binary input If configured as occupancy the bina...

Страница 14: ...output 1 Drive open or stage 1 TRIAC Binary output 2 Drive close or stage 2 TRIAC Binary output 3 Fan relay Analog output AO Controlled actuator 0 10 Vdc Binary Output 1 Binary Output 2 Binary output...

Страница 15: ...ulating actuator connected to the controller at the same time Overriding Outputs The MP501 includes a manual output test Use this feature to manually control the outputs in a defined sequence Refer to...

Страница 16: ...B A A B ZN GND SET ZONE SENSOR 20 GND AI1 AI BI BI 1 LED COMM5 LED PIN SERVICE BINARY OUTPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Tri state modulating actuator Fan on off Trane...

Страница 17: ...BI 1 LED COMM5 LED PIN SERVICE BINARY OUTPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Stage 2 Fan on off Trane zone temperature sensor Not used In LonTalk communication link Out Occ...

Страница 18: ...TPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Not used Fan on off Trane zone temperature sensor Not used In LonTalk communication link Out Occupancy or generic input Analog output 0...

Страница 19: ...stics have been generated Zone Temperature Control The proportional integral derivative PID control loop in the MP501 calculates the required heating or cooling capacity 0 100 The PID calculation comp...

Страница 20: ...ed or communicated setpoint values Occupied Bypass Mode The controller is placed in occupied bypass mode if the controller is operating in the unoccupied mode and either the timed override on button o...

Страница 21: ...of the actuator The output defaults to 50 on power up Overdrive logic automatically calibrates the actuator at the fully open and closed positions without continually driving the actuator This can cau...

Страница 22: ...he fan cycles regardless of the fan configuration Fan Off Delay After the actuator output has been controlled to its disabled position the MP501 automatically keeps the fan energized for an additional...

Страница 23: ...re pressure flow percent ppm SET Not used ZN Not used BI1 Enable Disable or Generic Binary Input The binary input equates a signal of 0 Vac with open contacts and 24 Vac with closed contacts The binar...

Страница 24: ...es a larger demand stage 2 binary output 2 will be controlled on Figure 10 p 26 shows a wiring diagram with the MP501 controlling staged outputs Note The MP501 controls only one actuator You cannot ha...

Страница 25: ...tor COMM5 B A A B ZN GND SET ZONE SENSOR 20 GND AI1 AI BI BI 1 LED COMM5 LED PIN SERVICE BINARY OUTPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Tri state modulating actuator Interlo...

Страница 26: ...puts COMM5 B A A B ZN GND SET ZONE SENSOR 20 GND AI1 AI BI BI 1 LED COMM5 LED PIN SERVICE BINARY OUTPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Stage 2 Interlock device on off Not...

Страница 27: ...Vdc actuator COMM5 B A A B ZN GND SET ZONE SENSOR 20 GND AI1 AI BI BI 1 LED COMM5 LED PIN SERVICE BINARY OUTPUTS 1 24V 24V 2 24V 3 GND 24V AC POWER OUT GND AO STATUS LED H Not used Interlock device o...

Страница 28: ...communicated the actuator output is overridden to closed and generates a Process Input Failure diagnostic 18 Normal operation begins if no diagnostics have been generated Loop Enable Disable The propo...

Страница 29: ...d positions without continually driving the actuator This can cause unnecessary wear Analog The controller takes the PID output of 0 to 100 and scales it for the analog output For example if the analo...

Страница 30: ...nd derivative calculations to determine how aggressively to change the output The goal of PID control is to reach the setpoint as quickly as possible without overshooting the setpoint or destabilizing...

Страница 31: ...roblem Integral Calculation The integral calculation responds to the length of time the measured value is not at setpoint The longer the measured value is not at setpoint the larger the output of the...

Страница 32: ...l use all of its power to bring the error to zero when the error is 2 F 1 1 C or greater Control becomes looser as the throttling range increases Throttling range cannot be programmed directly in a co...

Страница 33: ...water column wc is desirable A change in pressure of 2 0 in wc or more will drive the output from 0 100 or vice versa The calculations look like this Proportional gain 0 80 output range throttling ra...

Страница 34: ...tic pressure are missed In Figure 16 the sampling frequency is fast enough that the changes in static pressure are tracked accurately Figure 15 Sampling too slowly Sampling points Changes missed by sy...

Страница 35: ...if sampling freq is too fast Time Process variable Calculating the Sampling Frequency Table 8 shows suggested program execution frequencies for common applications These are good initial values but i...

Страница 36: ...and allow the measured value to stabilize The measured value stabilizes at 70 F 21 C 26 Control the output to the value used in step 3 and record the time it takes to reach the two thirds point determ...

Страница 37: ...is 5 seconds PID Loop Action The action of a PID loop determines how it reacts to a change in the process variable such as a room temperature through either Direct action Reverse action Direct Action...

Страница 38: ...letely open Reverse Duct static pressure Inlet guide vane position 0 100 Completely open Reverse Duct static pressure Variable frequency drive 0 100 Completely open Reverse Building static pressure Su...

Страница 39: ...e error does exceed 2 0 F 1 1 C the PID output can change Figure 21 Error deadband Control Control Setpoint Process variable Error deadband Error As shown in Figure 21 the error deadband is a means of...

Страница 40: ...The individual VAV boxes control their valve to the space depending on the supply air temperature If the supply air temperature is relatively warm the VAV box allows more air flow If the supply air t...

Страница 41: ...forms Look at the overall situation Can the system do what is expected of it What is happening to the process variable Is it oscillating or failing to reach setpoint Is the output oscillating 43 Check...

Страница 42: ...ng frequency of 30 to 60 seconds would work much better in this situation In other words to fix a cycling system slow down the loop Refer to the section Sampling Frequency p 34 Changing the Gains Be c...

Страница 43: ...1 controller circuit board LonTalk LED yellow Neuron chip Service Pin button Status LED green Test button Service LED red Neuron ID label Manual Output Test The manual output test sequentially control...

Страница 44: ...whether the controller is capable of operating normally refer toTable 13 Table 13 Red Service LED LED Activity Explanation LED is off continuously when power is applied to the controller The controlle...

Страница 45: ...munication normal for communicating applications including data sharing LED is on continuously Abnormal condition LED blinks 1 4 second on 1 4 second off for 10 seconds The auto wink option is activat...

Страница 46: ...problem that generated the diagnostic is solved Table 16 Diagnostics Diagnostic Probable Cause Consequence Diagnostic type Normal The MP501 has just been powered or a clear alarm command has just been...

Страница 47: ...once per second the controller is not executing the application software because the network connections and addressing have been removed Refer to the section Status Indicators for Operation and Commu...

Страница 48: ...over service tool and select the MP501 from the Active Group Tree The device plug in for the selected MP501 will appear with the Status screen displayed in the workspace Refer to the Rover Service Sof...

Страница 49: ...the initial troubleshooting steps described in Table 17 p 47 and verify general board operation is okay General board problem Step 2 Inspect the wiring Is there a good connection between the wire and...

Страница 50: ...the analog output to its disabled position typically 0 The disabled position is set on the PID tab in the Device Configuration screen If the controller is unoccupied but you think it should be in a di...

Страница 51: ...uration screen verify that the actuator drive time is not zero The outputs will not drive the actuator if the drive time is 0 Output configuration problem Step 4 At the Device Configuration screen sel...

Страница 52: ...put temperature flow pressure percent ppm fails binary outputs 1 and 2 go off The controller will return to normal operation when the sensor is no longer failed Sensor failure diagnostic Step 5 Compar...

Страница 53: ...tes adjustable The bypass timer then starts to count down to zero Setting the Occupied Bypass Time to zero disables the timed override function If the controller is unoccupied when someone presses the...

Страница 54: ...sed with a communicated occupancy request to place the controller in either occupied mode or occupied standby mode If neither the hardwired binary input nor a communicated request is used to select th...

Страница 55: ...ter Zero b Unoccupied Not zero b Bypass a Standby Does not matter Zero b Standby Not zero b Bypass a Not valid Occupied Does not matter b Occupied Unoccupied Zero b Unoccupied Not zero b Bypass a Stan...

Страница 56: ...ng 21 Outputs for generic applications 24 analog output 24 binary output 1 binary output 2 24 binary output 3 24 Outputs for SCC applications analog output 15 binary output 3 14 binary outputs 1 and 2...

Страница 57: ...ator generic mode 27 Analog 0 10 Vdc actuator SCC mode 17 Staged outputs generic mode 26 Staged outputs SCC mode 17 Tri state modulating actuator generic mode 25 Tri state modulating actuator SCC mode...

Страница 58: ......

Страница 59: ......

Страница 60: ...are committed to using environmentally conscious print practices Trane by Trane Technologies NYSE TT a global climate innovator creates comfortable energy efficient indoor environments for commercial...

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