Rockwell Automation Liqui-Flo AC Power Modules User Manual
Page 64
7-8
LiquiFlo AC Power Modules, Hardware Reference Version 6.4
7.2
Wiring the Encoder Feedback Device
(FVC Regulation Only)
If the LiquiFlo drive is programmed to provide FVC regulation, an encoder must be
installed. Drives using V/Hz or SVC regulation do not require the use of an encoder
feedback device. The encoder connects to terminals 4 to 9 of the regulator’s terminal
strip:
Use the following procedure to connect an encoder to the terminal strip:
Step 1. Connect the encoder’s wires to terminals 4 through 9 of the terminal strip.
See figure 7.3. See table A.6 for additional encoder specifications.
Step 2. Set the following parameters to establish the maximum motor speed:
•
P.004: Maximum Speed
•
U.001: Encoder PPR
•
U.002: Motor Poles
•
U.003: Motor Nameplate Base Frequency
•
U.005: Motor Nameplate RPM
•
U.017: Motor Top Speed
Refer to the LiquiFlo Software Start-Up and Reference manual for more information.
Terminal
Encoder Connection
4
Supply +15 VDC (250 mA capacity)
5
Phase A Differential Input
6
Phase A Not Differential Input
7
Phase B Differential Input
8
Phase B Not Differential Input
9
Encoder/Regulator Common