Rockwell Automation Publication 520-UM001K-EN-E - August 2021
241
Appendix G Safe Torque Off Function
Enabling PowerFlex 525
Safe-Torque-Off
1. Remove all power to the drive.
2. Loosen the screw of terminals Safety 1, Safety 2 and 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
for wiring recommendations and
Terminal Designations on page 42
If Safety Inputs S1 and S2 are powered by an ex24V source, apply it only
in SELV system, PELV system or low voltage Class 2 circuit.
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)
Summary of Contents for Allen-Bradley PowerFlex 520 Series
Page 8: ...8 Rockwell Automation Publication 520 UM001K EN E August 2021 Table of Contents Notes ...
Page 68: ...68 Rockwell Automation Publication 520 UM001K EN E August 2021 Chapter 2 Start Up Notes ...
Page 236: ...236 Rockwell Automation Publication 520 UM001K EN E August 2021 Appendix F PID Set Up Notes ...
Page 270: ...270 Rockwell Automation Publication 520 UM001K EN E August 2021 Index Notes ...