Anemostat EST - Manual (Page 33)

33
1220 Watson Center Road • Carson, CA 90745
Tel: (310) 835-7500 • Fax: (310) 835-0448
www.anemostat.com • [email protected]
Troubleshooting EST Controllers (PWM) - continued
EVO/ECM Series
Control Test Procedure
Tachometer Test This test only applies to EVO/ECM series controls that display or transmit RPM information.
The motor should be connected but turned off or running at minimum speed for this test.
Set the multimeter to read 5Vdc.
1. Touch the black lead to the common (Green) wire on
the 4 pin motor connector.
2. Touch the red lead to the Tachometer (Black) wire on
the 4 pin motor connector.
3. You should read about 5Vdc.
4. Go to the control connector on the motor.
5. Insert the black meter lead into the connector shell hole
containing the single green wire.
6. Insert the red meter lead into the connector she ll hole
containing the Black wire. The DC voltage should about 5Vdc.
If it is not, the control cable is defective. Swap the EVO/ECM
series control with a known good control to determine if the
problem is with the EVO/ECM series control. If the problem
persists, contact the equipment manufacturer for further
instructions.