Allen-Bradley PowerFlex 525 Original Instructions Manual page 23

I/O Wiring
Motor Start/Stop Precautions
ATTENTION: A contactor or other device that routinely disconnects and reapplies the AC line to the drive to start and stop the
motor can cause drive hardware damage. The drive is designed to use control input signals that will start and stop the motor. If
used, the input device must not exceed one operation per minute or drive damage can occur.
ATTENTION: The drive start/stop control circuitry includes solid-state components. If hazards due to accidental contact with
moving machinery or unintentional flow of liquid, gas or solids exist, an additional hardwired stop circuit may be required to
remove the AC line to the drive. When the AC line is removed, there will be a loss of any inherent regenerative braking effect that
might be present - the motor will coast to a stop. An auxiliary braking method may be required. Alternatively, use the drive's safety
input function.
Important points to remember about I/O wiring:
• Always use copper 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 m (1 ft).
I/O terminals labeled "Common" are not referenced to the safety ground (PE) terminal and are designed to greatly reduce common
IMPORTANT
mode interference.
ATTENTION: Driving the 4-20 mA analog input from a voltage source could cause component damage. Verify proper configuration
prior to applying input signals.
Signal and Control Wire Types
Recommendations are for 50 °C ambient temperature.
75 °C wire must be used for 60 °C ambient temperature.
90 °C wire must be used for 70 °C ambient temperature.
Recommended Signal Wire
Belden Wire Type(s)(or equivalent)
Signal Type/Where Used
Analog I/O & PTC 8760/9460
Remote Pot 8770
Encoder/Pulse I/O 9728/9730
(1) Stranded or solid wire.
(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.
Recommended Control Wire for Digital I/O
Type Wire Type(s)
Unshielded Per US NEC or applicable national or local code –
Shielded Multi-conductor shielded cable such as
Belden 8770 (or equivalent)
(1)
Description
2
0.750 mm (18 AWG), twisted pair, 100% shield with drain
2
0.750 mm (18 AWG), 3 conductor, shielded
2
0.196 mm (24 AWG), individually shielded pairs
Description
2
0.750 mm (18 AWG), 3 conductor, shielded.
Rockwell Automation Publication 520-TD001B-EN-E - June 2013
PowerFlex 525 AC Drive Specifications
Min. Insulation Rating
(2)
300V,
60 °C (140 °F)
Min. Insulation Rating
300V,
60 °C (140 °F)
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