User's Manual

Rockwell Automation Publication 440G-UM004C-EN-P - August 2020 49
Chapter 7 Application Examples
Wire to MSR55P Back EMF
Safety Relay
A PowerFlex 525 drive controls the speed and direction of the motor. The
MSR55P safety relay allows access to the hazard after the motor has achieved
its standstill settings. The DI safety relay monitors the guard locking switch
and the E-stop push button.
The DI safety relay enables the drive to restart after the gate is closed and
locked and the E-stop is released.
Figure 32 - MSR55P Back EMF Relay Schematic
+24V DC Class 2 PELV
A2
X1
X2
L3L2L1
X3
34 44
A1 A3332311
2412 ON ERR A454
43 53
M
S1
S2
1 Stop
PowerFlex
525
2 Start
4 Gnd
RTS
UWV
A1 S11S21
S12
S22
S32
L11
Y32L12
14
34 44
S42
24
S34
A2
440R-D22S2
3~
L1L2 L3
24V DC Com
Blue (Gnd)
Brown (+24)
440G-MZS20*NR*
Power to Release
No aux
Gray - Unlock Request
White - OSSD 1
Black - OSSD 2
889D-F5NC-X
Gate Control
Power Supply
Gate control
circuit
Unlock
Reset
LOGIC
2
DIS
MSR55P
7
3
V
m
t
s
440R-S35014
V
m
-Monitoring
voltage
t
s
- time Setting
(delay)
Safety Gate
Status
to PAC
ON status
ON status
Error status
Fuses*