Rockwell Automation Publication 520-TD002A-EN-E - May 2015 23
PowerFlex 527 AC Drive Specifications
Output Disconnect
The drive is intended to be commanded by control input signals that will start and stop the motor. A device that routinely
disconnects then reapplies output power to the motor for the purpose of starting and stopping the motor should not be
used. If it is necessary to disconnect power to the motor with the drive outputting power, use Logix Designer to disable the
drive (Aux Fault or Coast to Stop).
(1) Maximum/minimum sizes that the terminal block will accept – these are not recommendations.
Common Bus/Precharge Notes
If drives are used with a disconnect switch to the common DC bus, then an auxiliary contact on the disconnect must be
connected to a digital input of the drive.
I/O Wiring
Motor Start/Stop Precautions
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).
Power Terminal Block Wire Specifications
Frame Maximum Wire Size
(1)
Minimum Wire Size
(1)
Torque
A5.3 mm
2
(10 AWG) 0.8 mm
2
(18 AWG) 1.76...2.16 Nm (15.6...19.1 lb-in.)
B8.4 mm
2
(8 AWG) 2.1 mm
2
(14 AWG) 1.76...2.16 Nm (15.6...19.1 lb-in.)
C8.4 mm
2
(8 AWG) 2.1 mm
2
(14 AWG) 1.76...2.16 Nm (15.6...19.1 lb-in.)
D13.3 mm
2
(6 AWG) 5.3 mm
2
(10 AWG) 1.76...2.16 Nm (15.6...19.1 lb-in.)
E26.7 mm
2
(3 AWG) 8.4 mm
2
(8 AWG) 3.09...3.77 Nm (27.3...33.4 lb-in.)
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.
I/O terminals labeled “Common” are not referenced to the safety ground (PE) terminal and are designed to greatly reduce common
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.