Enabling powerflex 525 safe-torque-off, Wiring, Powerflex 525 safe-torque- off operation – Rockwell Automation 25B PowerFlex 520-Series Adjustable Frequency AC Drive User Manual User Manual
Page 227: Powerflex 525 safe-torque-off operation
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).
for wiring recommendations and
Terminal Designations 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)