Encoder Isolation; Encoder Wiring - MCi iControl User Manual

It is very important that the encoder does not slip, wobble, bounce, or vibrate due to poor instal-
lation of the shaft extension, coupling, or encoder mounting. It is also important that the
encoder housing be electrically insulated from the motor, machine or other grounds if the
encoder is manufactured by BEI. An insulated encoder mount has been furnished with the BEI
encoder. However, this type of mounting may not be practical for all applications, therefore, the
best method for mounting the encoder and coupling it to the motor must be determined at the
job site.

Encoder Isolation

The encoder housing must be electrically isolated from the machine (ground). To check this:
1. Measure the resistance between the encoder case and the frame of the motor.
The measured value must be "infinite" for complete isolation.

Encoder Wiring

A shielded cable with an appropriate connector at the encoder end is provided.
"Encoder Cables" on page
individual conductors. The encoder cable must be routed into the controller cabinet in a sepa-
rate conduit.
1. Connect the cable to the encoder using the cable/connector provided.
2. Route the cable through a separate conduit to the controller cabinet. Inside the control-
ler cabinet, if the encoder wires must cross power wires, they must cross at right angles
to reduce the possibility of interference.
3. Connect the controller end of the cable to the TORQMAX F5 drive as shown in the job
prints.
Caution
Do not coil excess encoder cable near high voltage components — noise may be induced. If
the cable must be shortened, trim it at the controller end. Do not cut and re-splice in the
middle of the cable or shorten at the encoder end (see also caution below).
Caution
The cable supplied with the Heidenhain ENC1313 EnDat encoder must not be altered, cut or
shortened. Therefore, a 1.5 inch conduit is required to accommodate the cable connector.
Caution
Permanent magnet (PM) AC Gearless Machines must by synchronized with the AC Drive.
Please refer to PM Synchronous Motors > Motor Data and Loading motor data from
encoder in the Initial Start Up section of the TORQMAX F5 drive manual.
AC Hoist Motor, Brake, and Velocity Encoder
2-26. The controller end of the cable exposes trimmed and tinned
Please refer to
2
2-25