Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 3
Version: 22.0
I0000756
WPR2
VFD
WIRING INSTRUCTIONS
PRECAUTIONS
•
Remove power before wiring. Never connect or disconnect wiring with power applied.
•
When using a shielded cable, ground the shield only at the controller end. Grounding both
ends can cause a ground loop.
•
It is recommended you use an isolated UL-listed class 2 transformer when powering the unit
with 24 VAC. Failure to wire the devices with the correct polarity when sharing transformers
may result in damage to any device powered by the shared transformer.
•
If the 24 VDC or 24VAC power is shared with devices that have coils such as relays, solenoids,
or other inductors, each coil must have an MOV, DC/AC Transorb, Transient Voltage
Suppressor (ACI Part: 142583), or diode placed across the coil or inductor. The cathode, or
banded side of the DC Transorb or diode, connects to the positive side of the power supply.
Without these snubbers, coils produce very large voltage spikes when de-energizing that
can cause malfunction or destruction of electronic circuits.
Open the cover of the enclosure. ACI recommends
16 to 26 AWG twisted pair wires or shielded cable
for all transmitters. Twisted pair may be used for
2-wire current output transmitters or 3-wire for
voltage output. All wiring must comply with local
and National Electric Codes. After wiring, close the
cover.
