The VSD Relay Outputs can be used to control Panel Fans which switch on when the VSD is running and switches off when the VSD stops running. In order to do that a Power Source can be connected to one of the VSD Relays with the Panel Fan connected to the Normally Open Relay Output. Using the Relay Output parameters, the Outputs can be controlled by the VSD Running Status by setting the following parameter:
- When using Relay 1 (TA1-TB1-TC1), set b4-02 = 2
- When using Relay 2 (TA2-TB2-TC2 or TA-TB-TC), set b4-03 = 2
Please Note: For Smaller Drives with only one set of Relays (TA-TB-TC), use the TA2-TB2-TC2 Relay parameter settings.
Contact driving capacity:
- 250 Vac, 3 A, COSø = 0.4
- 30 Vdc, 1 A
Suggested Cooling as follows:
*Please also see Drive Cooling/Panel Fan Selection information here.
- Active Cooling (air condition and water cooling) Rule of Thumb = 75 BTU/h is required for every 1 HP
- Passive Cooling (fan cooling) Rule of Thumb = 4 CFM is required for every 1 HP to maintain 10°C above ambient in the enclosure
*Please also see Drive Derating information here.
