50 Rockwell Automation Publication 440R-UM013F-EN-P - July 2021
Chapter 9 Application and Wiring Examples
Figure 51 - EMD Safety Relay - Jog
SI Safety Relay
(Cat.No.440R-S12R2)
The SI safety relay monitors a gate interlock with mechanical contacts in
Figure 52. The SI safety relay is configured for automatic reset. When the gate
is closed, the SI safety relay outputs turn on if contactors K1 and K2 are already
off. The Start button can then be pressed to turn on contactors K1 and K2.
Figure 52 - SI Safety Relay Example
A1
L11
X32B1 B2
L12 18 38 4828
17 37 4727
A2
EMD
440R-EM4R2D
0
1
2
3
4
5
6
7
8
9
1
2
3
4
5
67
8
10
9
S11
S12
S21
S22
S34 A1 13
L11 A2 14
23
24Y32
SI
440R-S12R2
0
MM
AM
K1
24V DC
24V Com
K2
K6
K5
K3
K4
K1
K2 K3 K4
K5 K6
RESET
Reset
To PLC
RANGE
TIME
Jog
K1
24V DC
24V Com
K2
K1 K2
S11
S12
S21
S22
S34A1 13
L11 A2 14
23
24Y32
SI
440R-S12R2
0
MM
AM
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