Carrier OPN-RTUM2 Integration Manual Download Page 37

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Troubleshooting

RTU Open v3

Carrier Proprietary and Confidential

Integration Guide

If Run LED shows...

And Error LED shows...

Status is..

2 flashes per second

3 flashes, then off

Controller has just been formatted

2 flashes per second

Two or more devices on this network

have the same network address

2 flashes per second

Firmware halted after frequent

system errors or control programs

halted

5 flashes per second

Off

Firmware transfer in progress, Boot is

running

7 flashes per second

7 flashes per second,

alternating with

Run

LED

Ten second recovery period after

brownout

14 flashes per second

14 flashes per second, alternating with

Run

LED

Brownout

Failure. Try the following solutions:

•

Turn the RTU Open off, then

on.

•

Replace the RTU Open.

Summary of Contents for OPN-RTUM2

Page 1: ...U U O Op pe en n v v3 3 I In nt te eg gr ra at ti io on n G Gu ui id de e CARRIER CORPORATION 2016 A member of the United Technologies Corporation family Stock symbol UTX Catalog No 11 808 521 01 2 22...

Page 2: ...e Important changes are listed in Document revision history at the end of this document CARRIER CORPORATION 2016 All rights reserved throughout the world i Vu is a registered trademark of Carrier Corp...

Page 3: ...ption Card Part LON OC 14 Commissioning the controller for LonWorks communication 15 Troubleshooting LonWorks 16 Start up 17 Sequence of Operation 18 Occupancy 18 Supply fan 19 Cooling 19 Economizer 2...

Page 4: ...and LonWorks 43 Appendix B BACnet Protocol Implementation Conformance Statement 46 Appendix C Modbus Protocol Implementation Conformance Statement 47 Appendix D Johnson N2 Protocol Implementation Conf...

Page 5: ...d party protocols On board DIP switches allow you to select the baud rate and choose one of the following protocols BACnet Modbus Johnson N2 LonWorks Mixed systems Supports CCN air terminals using Lin...

Page 7: ...Safety considerations handling warning WARNING When you handle the RTU Open Do not contaminate the printed circuit board with fingerprints moisture or any foreign material Do not touch components or...

Page 8: ...d Field supplied J1 10 J5 3 4 Input 6 AI 10K Thermistor Supply Air Temperature 33ZCSENSAT 33ZCSENDAT J2 1 2 N A Input 7 AI 10K Thermistor Outside Air Temperature 33ZCSENOAT J2 3 2 N A Input 8 BI 24 Va...

Page 9: ...eedback 24 Vac required at this wire to provide Run Enabled status Provide a jumper from J1 1 to J1 9 if no safeties are used See To wire inputs and outputs in the RTU Open Installation Guide for addi...

Page 10: ...1 of 4 different protocols BACnet MS TP page 7 Modbus page 9 N2 page 12 LonWorks page 14 The default setting is BACnet MS TP Switch 3 SW3 on the board sets protocol and baud rate Switches MSB SW1 and...

Page 11: ...et network The BACnet device instance is automatically generated based on the scheme 16101xx where 16 is the BACnet vendor ID for Carrier Corporation and xx equals the rotary switch address EXAMPLE To...

Page 12: ...Check the following to troubleshoot your RTU Open 1 Verify that the BAS and controller are both set to speak the BACnet MS TP protocol on the Comm Selector DIP switches DS3 DS6 2 Verify that the BAS a...

Page 13: ...ss 16 knows to pass the token back to MAC address 1 instead of counting up to MAC address 127 Each MS TP master node on the network must have their Max Masters set to this same value The default is 12...

Page 14: ...for all controllers on the network segment The RTU Open is fixed at 8 data bits No Parity and 1 Stop bit for this protocol s communications Baud Selection Table Baud Rate SW3 DS2 SW3 DS1 9 600 Off Off...

Page 15: ...ate 3 Verify that the BAS is configured to speak 2 wire EIA 485 to the controller The BAS may have to configure jumper or DIP switches on their end 4 Verify that the BAS and the controller have the sa...

Page 16: ...2 slave addresses are 01 99 EXAMPLE To set the N2 slave address to 01 point the arrow on the MSB SW1 switch to 0 and the arrow on the LSB SW1 switch to 1 3 Set the Comm Selector DIP switches DS1 and D...

Page 17: ...h set for the same baud rate 9600 for N2 Baud rate DIP switches DS2 and DS1 Obtain a Modstat of the controller Scroll to the bottom of the page to Network Communications to view the active protocol an...

Page 18: ...n s power NOTES Changes made to the switches when the controller is on will not take effect until the power has been cycled The controller s rotary address switches are not used when the LON OC is ins...

Page 19: ...is polarity insensitive Use 24 to 16 AWG twisted pair wire 8 Turn on the RTU Open s power 9 Commission the controller for LonWorks communication See instructions below Commissioning the controller fo...

Page 20: ...t the BAS and the controller are both set for the same baud rate 38 4k for LonWorks Baud rate DIP switches DS2 and DS1 Obtain a Modstat of the controller Scroll to the bottom of the page to Network Co...

Page 21: ...ACnet systems only Permanent interface System Touch device Available for BACnet systems only Wire to an MS TP network connector and a 24 Vac power supply 3 Temporary or permanent interface 1 Requires...

Page 22: ...e controller using an Equipment Touch or Field Assistant A BACnet schedule configured in the i Vu application networked through an i Vu Open Router A BACnet or local schedule configured for subordinat...

Page 23: ...e BACnet schedules BAS schedules or in response to a remote occupancy switch A Fan Off Delay allows the supply fan to continue operating after heating or cooling stops If the following alarms are acti...

Page 24: ...tes an alarm when the accumulated runtime exceeds the threshold set by the adjustable compressor service alarm timers Economizer The RTU Open provides an analog economizer output for rooftop units wit...

Page 25: ...with an economizer damper to use outdoor air to purge the space of contaminants just prior to the beginning of the occupied period The following conditions must be true for pre occupancy purge to oper...

Page 26: ...ly as 4 hours prior to occupancy The algorithm works by moving the unoccupied setpoints toward the occupied setpoints The rate at which the setpoints move is based on the outside air temperature desig...

Page 27: ...n use either an outdoor air or differential enthalpy switch A differential enthalpy switch has a sensing device in both the outdoor and return air streams A differential enthalpy switch indicates when...

Page 28: ...ol PID Loop and Heating Stages Capacity algorithm which calculate the desired number of stages to satisfy the space by comparing the Space Temperature to the Effective Occupied Heating Setpoint when o...

Page 29: ...lative humidity falls below the active setpoint by a 5 fixed Hysteresis when a humidity sensor is used or when there is no longer a call for dehumidification where a humidistat is used See the base un...

Page 30: ...ier rooftop equipment A Compressor Safety Alarm is shown on Properties page Equipment tab Alarms and indicates that the equipment requires attention Cooling heating and supply fan outputs are not inte...

Page 31: ...ay configure the RTU Open to monitor the base unit s compressor safety circuit This alarm indicates the base unit s compressor safety circuit is energized Cooling heating and supply fan outputs are no...

Page 32: ...ace Relative Humidity The RTU Open generates a Space Relative Humidity alarm if the space humidity level exceeds the configured low or high alarm limits This alarm is only shown when a valid relative...

Page 33: ...figuration Supply Fan Service Timer value to 0 disables the supply fan runtime alarm function Compressor 1 Runtime The RTU Open generates this alarm when the accumulated runtime exceeds the Unit Confi...

Page 34: ...RTU Open The setpoints and zone temperature from the zone with the greatest demand for the requested air source mode heating or cooling This zone is called the reference zone The system occupancy sta...

Page 35: ...a linked system the air source determines its operating mode and qualifies that mode based on its own SAT and the referenced zone s temperature The following modes can be sent by the air source depend...

Page 36: ...ol inputs simple 24V signals can be used to activate the units G Y1 Y2 W1 W2 etc and verify proper unit operation If the problem occurs without the RTU Open connected then the operator should begin tr...

Page 37: ...s on this network have the same network address 2 flashes per second On Firmware halted after frequent system errors or control programs halted 5 flashes per second Off Firmware transfer in progress B...

Page 38: ...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 own expense CAUTION Changes or modifications...

Page 39: ...sfan_status BV 1003 Discrete Input 24 Economizer Output R Open econ_output AV 2022 Input Register Float 51 Outdoor Air Quality Sensor R 0 Normal 1 Alarm oaq_fail BV 7006 Discrete Input 41 DCV Max Vent...

Page 40: ...W Open 33 econ_min_2 AV 9030 Holding Register Float 89 Fire Smoke Shutdown R 0 Normal 1 Alarm fire_alarm BV 7007 Discrete Input 32 Reset Filter Alarm R W 0 Off 1 On Inactive 0 filter_rntm_clr BV 7517...

Page 41: ...R min ovrde_time AV 2016 Input Register Float 93 Setpoint Adjustment R W 0 Disable 1 Enable Active 1 stpt_adj_enable BV 1013 Coil 26 System Space Temperature R W F 999 system_spt AV 1902 Holding Regis...

Page 42: ...Occupied Exhaust R W 0 No 1 Yes Inactive 0 occ_exh BV 9002 DCV Control R W Inactive 0 dcv_enable BV 1027 Dehumidification Test R W 0 Disable 1 Enable Inactive 0 dehum_test BV 81006 Door Contact Statu...

Page 43: ...t Relay State R 0 Off 1 On pexh BV 2010 Power Exhaust Test R W 0 Disable 1 Enable Inactive 0 pexh_test BV 81008 Reset Comp 1 Runtime Alarm R W 0 Run 1 Clear Inactive 0 comp1_rntm_clr BV 7514 Reset Com...

Page 44: ...1 Function R W 1 No Sensor 2 IAQ Sensor 3 OAQ Sensor 4 Space RH Sensor 1 ai1_function MSV 81001 Input 2 Function R W 1 No Sensor 2 IAQ Sensor 3 OAQ Sensor 4 Space RH Sensor 1 ai2_function MSV 81002 In...

Page 45: ...Sensor 3 T55 T56 4 Network 5 Airside Linkage 6 Locked Value spt_status MSV 2003 Unit Type R W 1 Heat Cool 2 LC WeatherExpert 3 HP O B Ctrl 4 HP Y1 W1 Ctrl 2 unit_type MSV 9018 ZS Temp Sensor R 0 Norm...

Page 46: ...ot voltage reading R slidepot_volts AI 1012 Filter Runtime R hr filter_rntm AV 2015 Fan Off Delay R W seconds 90 fan_delay_off AV 9024 input_7 R F ai_7 AI 1007 input_11 R ai_11 AI 1011 input_2 R ai_2...

Page 47: ...nviDCVMaxPos Space Temperature Prime Variable R F ADF 48 SNVT_temp_p 105 nvoSpaceTemp HP Rev Cycle Lockout Temp R W F 3 ADF 30 SNVT_temp_p 105 nviHPRvClLk System Outdoor Air Temperature R W F 999 ADF...

Page 48: ...3 Unoccupied 1 ADI 1 SNVT_count_inc 9 nviBASOnOff System Space AQ R W ppm 999 ADF 39 SNVT_count_inc 9 nviSysSpAQ System Space RH R W 999 ADF 40 SNVT_lev_percent 81 nviSysSpRH Compressor Status R 0 No...

Page 49: ...SNVT_switch 95 nviSysEnth Optimal Start R W hr 1 ADF 61 SNVT_count_inc 9 nviOptmStart Power Fail Restart Delay R W seconds 5 ADF 58 SNVT_count_inc 9 nviUntStrDly Indoor Air Quality CO2 ppm R ppm ADF 3...

Page 50: ...onfidential CARRIER CORPORATION 2016 Integration Guide All rights reserved 46 The PIC statements are updated regularly Please refer to the BACnet website http www bacnetinternational net catalog index...

Page 51: ...munication Types Baud rates Data Bits Parity Stop Bits 2 wire EIA 485 9600 19200 38400 76800 8 None 1 Function Codes Purpose Used with Register Numbers 01 Read Coil Status Read Discrete Outputs 00001...

Page 52: ...eserved 48 Unsigned Integer UINT 0 65535 3 Read Holding Register 6 Preset Single Register 16 Preset Multiple Register Signed Integer SINT 32768 32767 3 Read Holding Register 6 Preset Single Register 1...

Page 53: ...protocols The RTU Open controller speaks the Johnson N2 Open Protocol as described in the Metasys N2 System Protocol Specification for Vendors document revision 6 13 96 Further details on the N2 supp...

Page 54: ...mance Statement RTU Open v3 Carrier Proprietary and Confidential CARRIER CORPORATION 2016 Integration Guide All rights reserved 50 Write Internal Parameter Override Analog Input Override Binary Input...

Page 55: ...ork An external interface file XIF is also available so that any network management tool can design and configure the RTU Open prior to installation Contact your Carrier representative for this XIF fi...

Page 56: ...o this document are listed below Minor changes such as typographical or formatting errors are not listed Date Topic Change description Code 2 22 16 Start up Added USB Link wiring caution C TS RD E JH...

Page 57: ...e mode determination 31 Alarms 27 Compressor Safety 26 Cooling 19 Dehumidification 25 Demand limiting 25 Door switch 25 Economizer 20 Enthalpy control 23 Fan Status 26 Filter Status 27 Fire Shutdown 2...

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Page 60: ...CARRIER CORPORATION 2016 A member of the United Technologies Corporation family Stock symbol UTX Catalog No 11 808 521 01 2 22 2016...

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