Dis Safety Relay (Cat. No. 440R-D22S2) - Allen-Bradley Guardmaster User Manual

DIS Safety Relay
(Cat. No. 440R-D22S2)
In Figure 45, a DI safety relay monitors a safety mat and non-contact interlock
with OSSD outputs. Make note of the specific wiring for the mat. Also, during
configuration and for each power-up, the mat must be clear and the interlock
closed. The DI safety relay must be configured for AND logic for the two
inputs. The DI safety relay logic setting is 6: (IN1 AND IN2) OR L12 with
automatic reset. The DI safety relay verifies that contactors K1 and K2 are off
by monitoring the mechanically linked normally closed contacts in the S34
circuit. When the DI safety relay is off, the auxiliary signal at terminal Y32
turns on and reports the status to a PLC. Per ISO 13856-1, safety mat
applications require a manual reset function. For fault detection purposes, all
GSR relays used for safety mat control must be configured for monitored
manual reset.
Figure 45 - With a Safety Mat and Device with OSSD Outputs, Monitored Manual Reset, AC Loads
L1
120/230V AC
24V DC
OSSD1
OSSD2
24V Com
N
Figure 46 shows the DIS safety relay with only one device. The DIS and DI
safety relay can monitor one device by configuring the relay for OR logic. The
DIS safety relay logic setting is 1: (IN1 OR IN2) OR L12 with monitored
manual reset. The second input (terminals S32 and S42) requires no
connection. With solid-state outputs, the contactors K1 and K2 must be 24V
DC powered coils. The DIS safety relay verifies that contactors K1 and K2 are
off by monitoring the mechanically linked normally closed contacts in the S34
circuit. When the DIS safety relay is off, the auxiliary signal at terminal Y32
turns on and reports the status to a PLC.
Figure 46 - Single Input, Monitored Reset
24V DC
S11 S21 S22 S12
LOGIC
8
7
6
DIS
440R-D22S2
Y32
L12 L11 A2
To PLC
24V Com
Rockwell Automation Publication 440R-UM013E-EN-P - March 2017
Application and Wiring Examples
K1
K2
Reset
S11 S21 S22 S12 A1 13 23 S34
0
LOGIC
1
2
3
8
4
7
DI
6 5
440R-D22R2
S32 S42 L11 L12 A2 14 24 Y32
To PLC
K1 K2
K1
K2
Reset
S32 S42 A1 S34
0
1
2
3
4
5
14 24
34 44
K1 K2
Chapter 9
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