Rockwell Automation Publication 440R-UM013G-EN-P - December 2022 23
Chapter 3 Power, Ground, and Wire
Figure 13 - Example Combining Safety Mats with Devices with OSSD Outputs
Safedge Safety Edges
Some of the Allen-Bradley Guardmaster Safedge pressure sensitive safety edges (only profiles
0110N, 0110R, and 1610N) can connect to CI, DI, DIS, and SI safety relays. Figure 14
shows how
Safedge edges are constructed of conductive rubber with two embedded wires that run the
length the edge. Each wire forms a channel for the GSR safety relay. When the edge is
compressed, a low resistance is created between the two channels. The Safedge edge must be
constructed with four wires (two wires exit each end). See publication 440F-UM002
for more
information on the Safedge edges.
Figure 14 - Safedge Operating Principle
Figure 15 on page 24 shows the typical wire connections. With the proper connection, GSR
safety relays detect the compression of the edge and turn off their outputs. With no pressure
on the edge, the GSR outputs can turn back on with a reset signal.
IMPORTANT Only use Safedge profiles 0110N, 0110R, and 1610N with the GSR safety
relays.
IMPORTANT For fault detection purposes, configure GSR safety relays for monitored
manual reset when connected to Safedge safety edges.
IMPORTANT When using safety edges, set the DI and DIS safety relays for AND logic. If
only one edge is used, the second input must either connect with
jumpers or to another safety device. If another safety device is
connected to the second input, the outputs of the safety device must be
on during configuration and during power-up.
DI and DIS
Pulse
Testing
Outputs
S11
S21
Mat
S22
Input 2
Pulse Testing
OSSD Device
Input 1
S12
S42
S32
DI and DIS
Pulse
Testing
Outputs
S11
S21
Mat
S22
Input 2
Pulse Testing
OSSD Device
Input 1
S12
S42
S32
Mat
Input 1
Pulse Testing
OSSD Device
Pulse
Testing
Outputs
DI and DIS
Mat
Pulse Testing
OSSD Device
Pulse
Testing
Outputs
Input 2 Input 1 Input 2
DI and DIS
Wires on
Both Ends
Compression
Creates a Low
Resistance from
Ch1 to Ch2
Flexible Wire
Cores
(Ch1 and Ch2)
Conductive
Rubber
Non-conductive Rubber
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