Fan didn't shut down on fire alarm

Are you needing your Basic 6 or Powerfoil 8 model fan to comply with NFPA regulations?

These fans require a contact closure on alarm condition between VFD terminals “12v” (or “4” on pre-2019 drives) and “13A” to shut down with an “external fault” status. A PAM-SD model relay was included that requires 20–32vdc at 15mA to change state.

Try these troubleshooting suggestions:

1. Lockout and tag out the fan appropriately.
2. Use an electrical multi-meter capable of testing DC voltage and continuity to verify the relay functionality at the VFD.
3. The PAM relay could be temporarily replaced with a “jumper” wire to test the programmable fault response function of the 13A input when re-energized.
4. The factory-included relay may be replaced with another type if required, such as a proprietary addressable relay, but it must be installed in the N.O. configuration.
5. Record the serial number information found on the gear reducer nameplate and contact Customer Support.