Allen-Bradley PowerFlex 520 Series User Manual

Rockwell Automation Publication 520-UM001G-EN-E - September 2014 227
Safe-Torque-Off Function Appendix G
Enabling PowerFlex 525
Safe-Torque-Off
1. Remove all power to the drive.
2. Loosen the screw of terminals Safety 1, Safety 2 and Safety +24V
(S1, S2, S+) on the control I/O terminal block.
3. Remove the protective jumper.
4. Safe-Torque-Off function is now enabled and the terminals are ready to
function as safety inputs.
Wiring
Important points to remember about wiring:
• Always use copper wire.
• Wire with an insulation rating of 600V or greater is recommended.
• Control wires should be separated from power wires by at least
0.3 m (1 ft).
See I/O Wiring
on page 35 for wiring recommendations and Control I/O
Term i n a l D e s i g n a t i o n s on page 40 for terminal descriptions.
If Safety Inputs S1 and S2 are powered by an external +24V source, apply it only
in SELV system, PELV system or low voltage Class 2 circuit.
PowerFlex 525 Safe-Torque-
Off Operation
The PowerFlex 525 Safe-Torque-Off function disables the drive’s output IGBT’s
by breaking the link with the drive microcontroller. When used in combination
with a safety input device, the system satisfies the requirements of EN ISO 13849
and EN62061 for safe-torque-off and helps protect against restart.
ATTENTION: To avoid an electric shock hazard, verify that the voltage
on the bus capacitors has discharged before performing any work on
the drive. Measure the DC bus voltage at the +DC and -DC terminals or
test points (refer to your drive’s user manual for the location of the
terminals). The voltage must be zero.
R1
S1 S2 S+ 11 12 13 14 15 16 17 18 19
R2 R5 R6 01 02 03 04 05 06 07 08
Recommended Wire
Type Wire Type
(1)
(1) 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.
Description Min. Insulation
Rating
Shielded Multi-conductor shielded cable such as Belden 8770 (or equiv.) 0.750 mm
2
(18 AWG),
3 conductor, shielded.
300V, 60 °C (140 °F)

Allen-Bradley PowerFlex 520 Series Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 520 Series
Category	DC Drives
Language	English