Dantherm HAC 1 Service Manual

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Dantherm HAC 1 Service Manual Manual pdf 15 page image

15Connecting external accessories: Damper actuatorsenDamper actuatorsThe HAC controller is prepared for operation of 24V DC damper motors. The system can con-trol both spring return (e.g. Belimo TF24) damper motors and direction controlled (e.g. BelimoLM 24) damper motors.IMPORTANT: In both cases, additional DC power for the damper motors, must be delivered byan external 24 VDC power supply.Whenever there is power to the system all dampers are open unless:• Standby switch is activated (J8)• Fan speed 0 is selected due to any reason for longer/shorter time• Fire thermostat is activated (open circuit)Follow the below schematic to connect one or more direct controlled damper motor.The output can handle a maximum of 100 mA current, and is over current protected with aself-resetting fuse.T3T2T3T2AlarmInputCO2AuxJ6J7J8J9J10Power In24VDC24VDC24VDC12VUSB FailOKStatus0V0VD+D-TFireTherm+ - + -Input Damper 1OpenOpenDamper 2 ModBus1+ 2+ +16VStandbySwitchHygro-statFailAlarmFilterAlarm+12VSDASCL0 - 10V0 V0 V0 VJ1 J2 J3 J4 J5230VGND24 V DC1=Open 2=Close230V AC / 24V DC PSUmin. 100 mAFig. 11IntroductionConnect a DIRECTCONTROLLEDmotor (3 wires)