Daikin DPS005 Installation And Maintenance Manual

Also see for DPS003: Installation and maintenance manual Manual

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Daikin DPS005 Installation And Maintenance Manual Manual pdf 74 page image

eCM MoTorRebel (size 003–015) SAFs and all EAFs utilize ECM[electronically commutated external rotor] motors. ECM motorspeed is controlled by unit mounted, MicroTech III, staticpressure and temperature controls to reliably maintain comfortconditions.These ECM motors include locked rotor, phase failure, lowvoltage, high temperature and short circuit protection as wellas built in soft start logic. Details are provided in the vendor’sIOM manualCustomer design speed is programmed into the ECM motorbased on desired CFM and ESP. Design speed can bechanged as follows as long as the fan’s maximum RPM is notexceeded per Table 32• Go into the MicroTech III keypad / display [see OM 1141for detailed instructions]• On the main menu, go to commission unit• Go to SF [or RF/EF] set up menu• find Max SAF [or EAF] RPM• Enter the desired maximum RPMTable 32: ECM Motor Fan Size Maximum RPMWheel Diameter (mm) SAF Max RPM EAF Max RPM12" (310) 2580 258014" (355) 2600 260016" (400) 2040 255022" (560) 1750 NANOTE: 2-16" (400 mm) EAFs are available on sizes 016–028. Each uses thesame valves.ECM Motor Setup(Required when replacing exhaust fans)ECM - Electronically Commutated Motor communicatesvia modbus RS485 twisted pair cables to the Microtech IIIcontroller. Microtech III can address the ECM for a supply,return, or exhaust fan operation based on a unique modbusaddress. A replacement ECM is shipped out from thewarehouse with an address of “1” which is a direct replacementfor a supply fan and does not require additional setup. If theECM is being used as a return or exhaust fan, it needs to besetup with an address of “2”Addressing Return Or Exhaust ECM1 Close the MMP or shut the circuit breakers to thesupply and energy recovery drives to keep modbuscommunication enabled only at the return/exhaust ECM.2 Verify the RS485 output on the Microtech III controller isconnected at terminals A and B to TB1 terminals 39 and40 respectively.3 Make sure the shield for the twisted pair cable isterminated at TB terminal 41 only.4 At the drive, verify wires from the controller sideterminals 39 and 40 are terminated at the ECM terminalsRSA and RSB. See Detail B on page 845 At the Microtech III controller enter a level 2 password of6363 and click on “About This AHU” to verify if code 101is being used (310 forMaverick). If any othercodes are being used,please consult withMcQuay Warranty Servicegroup for technicalsupport6 Press the middlerectangular button to goback to the main menu.7 Scroll down and click on the “Unit Configuration Menu”8 Scroll to the “SAF type” and set it to EBM VAV9 Scroll to the “RAF type” and set it to EBM VAV10 Scroll up to “ApplyChanges” and set it toYes. Wait for the controllerto restart11 Enter the level 2 passwordagain and go into “ServiceMenus”IM 1125-7 • REBEL ROOFTOPS 74 www.DaikinApplied.comeCM M oTor