Manual

Rockwell Automation Publication PFLEX-IN006E-EN-P - July 2013 31
Chapter 2
Control Wiring for PowerFlex 700H Drives
Important points to remember about I/O wiring:
• Always use copper wire.
• Wire gauge requirements and recommendations are based on 75 °C. Do
not reduce wire gauge when using higher temperature wire.
• Wire with an insulation rating of 600V or greater is recommended.
• Control and signal wires should be separated from power wires by at least
0.3 meters (1 foot).
Table 7 - Recommended Control Wire
IMPORTANT
Control (I/O) terminals labeled “(–)” or “Common” are not referenced to earth
ground and are designed to greatly reduce common mode interference.
Grounding these terminals can cause signal noise.
ATTENTION: Inputs must be configured with software and jumpers (see page
36
). In addition, configuring an analog input for 0…20 mA operation and
driving it from a voltage source could cause component damage. Verify proper
configuration prior to applying input signals.
ATTENTION: Hazard of personal injury or equipment damage exists when using
bipolar input sources. Noise and drift in sensitive input circuits can cause
unpredictable changes in motor speed and direction. Use speed command
parameters to help reduce input source sensitivity.
Type Wire Type Description Min. Insulation Rating
Signal
(1)(2)
Standard Analog I/O – 0.750 mm
2
(18AWG), twisted pair, 100% shield
with drain.
300V,
75…90 °C (167…194 °F)
Remote Pot – 0.750 mm
2
(18AWG), 3 conductor, shielded.
Digital I/O
Safety Inputs
Homing Input
(1)(2)
Un-shielded – Per US NEC or applicable national or local code. 300V,
60 °C (140 °F)
Shielded Multi-conductor shielded cable 0.750 mm
2
(18AWG), 3 conductor, shielded.
(1) Control and signal wires must be separated from power wires by at least 0.3 meters (1 foot).
(2) If the wires are short and contained within a cabinet which has no sensitive circuits, the use of shielded wire may not be necessary, but is always recommended.