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User Guide

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MCX-RTU Rooftop

RS8KE102 | 3

© Danfoss | ADAP-KOOL® | 2018.11

Version

Init.

Date

Description

1.00

FF

12/01/15

Initial MCX-RTU User Guide

1.04

FF

7/31/2018

Firmware v1.04 Update

Document history

Product Introduction

The MCX-RTU controller is a complete solution for controlling a small to medium sized commer-
cial rooftop unit. The controller provides energy efficient control of the rooftop while maintai-
ning designed comfort levels and safety of the controlled space. It is also designed to comple-
ment the Danfoss full store control via the connection to the AK-SM 800 series front end.

Ordering

Type

Function

Application

Code no.

MCX-RTU

Controller for small to medium sized
rooftops

Rooftop Controller

080G0304

MCX08M2

Optional additional IO for MCX-RTU

IO Expansion

080G0307

MMIGRS2

Optional Remote Display

Remote Display

080G0294

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Содержание MCX-RTU

Страница 1: ...MCX RTU Rooftop unit User Guide ...

Страница 2: ...Cooling Mode 9 Heating Mode 10 Dehumidification Mode 10 CO2 Mode 11 DOAS Mode 11 Status Screens 12 Configuration 14 Overrides 24 Schedule Enable 25 How it works 25 Backup Restore 26 Purpose 26 How it works 26 Using More Than One Zone Sensor 26 Data Logging 27 How it works 27 Broadcast Configuration 28 How it works 28 Configure Sensors 28 Configure Schedules 28 Configure Load Shed 28 AK SM 800 MCX ...

Страница 3: ...oftop unit The controller provides energy efficient control of the rooftop while maintai ning designed comfort levels and safety of the controlled space It is also designed to comple ment the Danfoss full store control via the connection to the AK SM 800 series front end Ordering Type Function Application Code no MCX RTU Controller for small to medium sized rooftops Rooftop Controller 080G0304 MCX...

Страница 4: ...DI17 24 V AC or 230 V AC driven AK SM 800 Firmware required to interface with the MCX RTU must be VG8 033 or greater and StoreView Desktop version 1 13 or greater must be used for remote access Approvals EU Declaration of Conformity This product is in conformity with the following directive s standard s or other normative document s provided that the product is used in accordance with our instruct...

Страница 5: ...res This image provides the dimensions of the MCX RTU controller for determining space for mounting Make sure that you allow enough space for easy routing of the required interface cables for power inputs and outputs 110 280 60 63 Danfoss 80G8044 01 The MCX RTU must be mounted in a space that meets the environmental standards named in the specification section of this document ...

Страница 6: ...AO 1 COM 15V COM DI 1 DI 2 DI 3 DI 4 COM DI 5 DI 6 COM COM 15V AI 7 AI 6 AI 5 5V AI 4 AI 3 AI 2 AI 1 COM COM 15V AI 14 AI 13 AI 12 5V AI 11 AI 10 AI 9 AI 8 Wiring Diagram MCX 152V top and bottom AK SM 800 Modbus connection VLT Drive Modbus connection Mixed Air PT1000 Outdoor Temp PT1000 Light Level 5VDC Compr 1 Press 5VDC Compr 2 Press 5VDC Compr 3 Press 5VDC Compr 4 Press 5VDC Not used Damper AO ...

Страница 7: ...C 12 NO 12 C 13 C 13 NO 13 NC 13 C 14 NO 14 NC 14 C 15 NO 15 NC 15 COM COM 15V AI 7 AI 6 AI 5 5V AI 4 AI 3 AI 2 AI 1 COM COM 15V AI 14 AI 13 AI 12 5V AI 11 AI 10 AI 9 AI 8 Danfoss 80G8043 02 Wiring Diagram MCX 152V top and bottom Input Voltage 110 230 V AC Stepper Backup NOT USED Fan Proof Phase Loss Shutdown 1 Shutdown 2 Fan Drive Fault Compr 1 Drive Fault Compr 2 Drive Fault Compr 3 Drive Fault ...

Страница 8: ...d B is connected to B The shield must be connected and com plete a path from the device all controllers any repeaters finally landed on the ground shield terminal at the AK SM 800 The shield must not be connected to earth ground except at the AK SM 800 At the AK SM 800 the shield must be attached to the shield terminal and then extended to an external earth ground See AK SM 800 User Guide for syst...

Страница 9: ...s configuration the first stage will start when the Zone Temperature reaches the Cool 1 Target minus the Range The Analog Output will be set to the Min Compr1 Speed The speed ramps to 100 when the Zone Temperature reaches the Cool 1 Target plus the Range When Zone Tempe rature reaches the Cool 2 Target minus the Range the second stage activates and the first stage reduces to Min Compr1 Speed If th...

Страница 10: ... is configured for continuous operation the fan modulates to the Heat Reclaim Aux Heat Min Fan Speed with no demand for heating If the fan is configured for On Demand and there is no demand for heating the fan either modulates to Heat Reclaim Aux Heat Min Fan Speed or turns OFF depending on the setting of the Fan Control Demand parameter Dehumidification Mode The Controller is in Dehumidification ...

Страница 11: ... there are no lockouts to effect operation CO2 control requires an Analog Output to control the damper The damper activates when the Zone CO2 level reaches CO2 Target minus the CO2 Range The damper modulates proportionally between the CO2 Target minus the CO2 Range and CO2 Target plus the CO2 Range DOAS Mode DOAS Mode is a combination of all the above modes DOAS Mode is controlled by the value for...

Страница 12: ...t Sensor Values from Main Status Screen using the Down Arrow button Sensor Error Values 20000 Sensor Open 20001 Sensor Short 20002 Broadcast Value Not Updating 20003 Sensor Disabled Current Sensor Screen ZNTP Zone Temp ZNRA Return Air Temp ZNRH Zone RH OTTP Outdoor Temp ZNET Zone Enthalpy OTRH Outdoor RH ZNDP Zone Dewpoint OTET Outdoor Enthalpy ZNC2 Zone CO2 Level OTDP Outdoor Dewpoint ZNSA Supply...

Страница 13: ...n using the Left Arrow button Broadcast Sensor Screen This screen shows the values that have been received via the broadcast from the AK SM 800 The sensors that start with RH and CO2 are just that Then you have the three outdoor sensors The two values at the bottom right are SCHD Schedules bit mask and LDSH Load Shed Value ...

Страница 14: ...n and enter the password default 300 for the following screen Note that every time the Main Status Screen is visible the password entered is cleared and must be reentered to access the password protected items Select Service and then Serial Settings to edit the communication Address of the control Press enter to put controller in Edit mode then use the Up Down arrows to edit Press enter to save ...

Страница 15: ...0 C14 CL4 Stage Type Select RO or AO RO C15 Heat Reclaim Stages Select number of Heat Reclaim Stages 0 4 2 C16 Aux Heat Stages Select number of Aux Heat Stages 0 4 2 C17 Use Gas Heat Does Aux Heat use Gas Heat Yes No Yes C18 Enable Dehumidi fication Enable Dehumidification Yes No Yes C19 Control Dehumid on Select Control Dehumidification with RH sensor or CalcDP CalcDP C20 Reheat Cntl Reheat Contr...

Страница 16: ...or for Zone RH Disable Local GlobalRH1 5 Avg Local C49 Zone CO2 Select Sensor for Zone CO2 Disable Local GlobalCO2 1 5 Local C50 Outdoor Temp Select Sensor for Outdoor Temp Disable Local Global Local C51 Outdoor RH Select Sensor for Outdoor RH Disable Local Global Local C52 Outdoor CO2 Select Sensor for Outdoor CO2 Disable Local Global Disable C40 Supply Air Sensor Select Sensor for Supply Air Dis...

Страница 17: ... front end the unit will use for night setback 0 16 zero disables using front end schedule 0 y09 Enable Alarms Master Alarm Enable No Yes Yes y10 Changeover Delay Set delay time between switching between Heat and Cool mode 0 60 5 m y02 Enable Expansion Enable Expansion Module No Yes No y11 Enable AI Filters Enable AI Filters No Yes Yes y12 Global AI Filter Set Global AI Filter Value 0 2 4 16 How m...

Страница 18: ...le Broadcast feature No Yes Yes y36 Night Shutdown Night Shutdown No Yes No y37 Enable Logging Enable Logging No Yes No y38 Logging Interval Set Logging Interval 1 m FAN Parameters Fan Function Default Units FN1 Fan Off Delay Fan Off Delay 0 30 2 m FN2 Fan Proof Value Fan Proof Value 0 0 100 0 Used with the Fan CT AI If AI is above this value the is ON 2 0 a FN3 Min Fan Speed Min Fan Speed when in...

Страница 19: ... PostDelay Cool 4 Post Delay 0 240 240 m CLr CL Range Cool Range 0 0 10 0K 0 5 K F CL1 CL Ambient Lockout Cool Mode Ambient Lockout 0 0 85 0 C 15 6 C F CL2 CL Lockout Range Cool Mode Ambient Lockout Range 0 0 10 0K 1 1 K F CnS CL Night Setback Cool Mode Night Setback 0 0 30 0K 0 6 K F Cs1 CL SupplyAir Cool Mode Supply Air Target for VS Fan 0 0 100 0 C 15 0 C F Cm1 CL Min Fan Speed Cool Mode Min Fa...

Страница 20: ... back Heat Reclaim Mode Night Setback 0 0 30 0K 2 8 K F HRs HR SupplyAir Heat Reclaim Mode Supply Air Target for VS Fan 0 0 100 0 C 30 6 C F Rm1 HR Min Fan Speed Heat Reclaim Mode Min Fan Speed 0 0 100 0 50 0 Rm2 HR Max Fan Speed Heat Reclaim Mode Max Fan Speed 0 0 100 0 75 0 HET Parameters Aux Heat Function Default Units Ht1 HT1 Target Aux Heat 1 Target Temperature 10 0 40 0 C 20 8 C F Hb1 HT1 Pr...

Страница 21: ...H2 PostDelay Dehumidification 2 Post Delay 0 240 240 m Dt3 DH3 Target Dehumidification 3 Target Temperature 10 0 40 0 C 100 0 Db3 DH3 PreDelay Dehumidification 3 Pre Delay 0 240 240 m Da3 DH3 PostDelay Dehumidification 3 Post Delay 0 240 240 m Dt4 DH4 Target Dehumidification 4 Target Temperature 10 0 40 0 C 100 0 Db4 DH4 PreDelay Dehumidification 4 Pre Delay 0 240 240 m Da4 DH4 PostDelay Dehumidif...

Страница 22: ...Dehumidification Compr 4 Integration Time 5 1000 120 DMP Parameters Damper Config Function Default Units DM1 DAM Min Open Damper Min Open 0 0 100 0 7 0 DM2 DAM Max Open Damper Max Open 0 0 100 0 100 0 DM3 DAM Air Target Damper Free Cooling Supply Mixed Air Target 0 0 40 0 18 0 C F DM4 High Amb Temp Lockout Damper Free Cooling High Ambient Lock out 0 0 100 0 25 0 C F DM5 High Otdr RH Lockout Damper...

Страница 23: ...500 1500 S12 Cool2 High Cycle Cool 2 High Daily Cycles 0 1000 1000 S13 Cool3 High Runtime Cool 3 High Daily Runtime 0 1500 1500 m S14 Cool3 High Cycle Cool 3 High Daily Cycles 0 1000 1000 S15 Cool4 High Runtime Cool 4 High Daily Runtime 0 1500 1500 m S16 Cool4 High Cycle Cool 4 High Daily Cycles 0 1000 1000 S17 Heat1 High Runtime Heat 1 High Daily Runtime 0 1500 1500 m S18 Heat1 High Cycle Heat 1 ...

Страница 24: ...ng Override Cooling Auto Off Stg1 Stg2 Stg3 Stg4 All On Auto OV7 Override Heat Reclaim Override Heat Reclaim Auto Off Stg1 Stg2 Stg3 Stg4 All On Auto OV8 Override Aux Heat Override Aux Heat Auto Off Stg1 Stg2 Stg3 Stg4 All On Auto OV9 Override Time out Override Timeout Removes override after so much time 0 30 0 m Overrides OV1 and OV2 are used to enable Night Setback and Title24 modes Overrides OV...

Страница 25: ...le has been setup you will see a screen similar to the one below If there is no sche dule the MCX RTU will follow the configuration of the unit To add a schedule double click on the Num of schedules and set the number of schedules Each schedule allows programming a Start and Stop time This On Off Schedule will completely shutdown the MCX RTU between midnight and 9 45 AM This Eco Com Schedule will ...

Страница 26: ...a minute for the restore to complete Note There is no indication when the backup restore are complete Using More Than One Zone Sensor To use more than one zone sensor for a MCX RTU use parameter C57 Zone Control The allowed settings for this parameter are Single Only uses a single sensor for control Average Uses the average of 2 to 3 sensors for control Low Uses the lowest value of 2 to 3 sensors ...

Страница 27: ...Outdoor Dewpoint 13 GlobalSchedules Bit map of the first 16 refrigeration schedules 14 AlarmStatus Alarm Status 15 Mode MCX RTU Mode 16 EffSetp Calculated Setpoint heat or cool setpoint depending on mode 17 FanOut Fan Control Output 18 FanFail Fan Proof not on when FanOut is ON 19 PhaseLoss On means PhaseLoss is good 20 ShutdownFlag One of the shutdown DI s is active 21 CoolHeatModeGlobal What is ...

Страница 28: ...e Local sensor or the Global sensors You can also use these parameters to disa ble the sensors Configure Schedules The schedules used by the MCX RTU are setup on the AK SM 800 The schedule status of the first 16 schedules are broadcasted to all the MCX RTU controllers There is no assignment of individu al MCX RTU at the AK SM 800 The schedule assignments are only configured in the MCX RTUs The sch...

Страница 29: ...KOOL 2018 11 AK SM 800 MCX RTU Commission To commission a MCX RTU controller on a AK SM 800 use the following steps Connect to the AK SM 800 using Storeview Desktop or a web browser and log in Next go to Configuration Next click on the HVAC Layout image ...

Страница 30: ...anfoss ADAP KOOL 2018 11 This starts the Layout wizard Click the Right Arrow on the upper right corner Enable the MODBUS RS485 channel by selecting Disabled next to MODBUS RS485 and change to Enabled Click the arrow to advance to next screen ...

Страница 31: ...U Rooftop RS8KE102 31 Danfoss ADAP KOOL 2018 11 Click the Scan button to start the scanning process Once scanning is complete a list of the HVAC controllers are displayed Click Right Arrow upper right corner to proceed ...

Страница 32: ...To add offline controllers follow the instruc tions on the screen Click the Right Arrow upper right corner to proceed View a summary of the HVAC controllers attached to the AK SM 800 If correct click on the Right Arrow upper right corner If something is missing click the Left Arrow upper left corner and make changes ...

Страница 33: ...User Guide MCX RTU Rooftop RS8KE102 33 Danfoss ADAP KOOL 2018 11 Pop Up indicating completion using HVAC Layout Wizard ...

Страница 34: ...ule 0 0 200 0 0 5 V 16 Aux AI 2 Located on Expansion Module 0 0 200 0 0 5 V 17 Aux AI 3 Located on Expansion Module 0 0 200 0 0 5 V 18 Aux AI 4 Located on Expansion Module 0 0 200 0 0 5 V 19 Aux AI 5 Located on Expansion Module 0 0 200 0 0 5 V 20 Aux AI 6 Located on Expansion Module 0 0 200 0 0 5 V 21 Aux AI 7 Located on Expansion Module 0 0 200 0 0 5 V 22 Outdoor CO2 Located on Expansion Module 0...

Страница 35: ...0 2 10 V 7 Not Available 0 100 NO 8 Not Available 0 100 NO 9 Located on Expansion Module 0 100 NO 10 Located on Expansion Module 0 100 NO 11 Located on Expansion Module 0 100 NO 12 Located on Expansion Module 0 100 NO DO DIGITAL OUTPUTS Min Max Type 1 Cool 1 0 1 N O 2 Cool 2 0 1 N O 3 Cool 3 0 1 N O 4 Cool 4 0 1 N O 5 Aux HT 1 0 1 N O 6 Aux HT 2 0 1 N O 7 Aux HT 3 0 1 N O 8 Aux HT 4 0 1 N O 9 Rehe...

Страница 36: ...Danfoss reserves the right to alter its products without notice This also applies to products already on order provided that such alternations can be made without subsequential changes being necessary in specifications already agreed All trademarks in this material are property of the respective companies Danfoss and Danfoss logotype are trademarks of Danfoss A S All rights reserved ...

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