Allen-Bradley Guardmaster GuardLink User Manual page 20

Chapter 1 Overview
Schematic
+24V DC
Host PC
Ethernet
+ +
DC ok
24-
HMI PLC
28V
1606-XLP95E
N L
Ethernet
24V DC Com
20
The SensaGuard switches allow immediate access to the machine. Additional
risk reduction measures must be provided to prevent access to the hazards
during the timing period.
Because guard locking is used, a 440R-ENETR interface must be included in
the application. The unlock and lock control commands are initiated by an
HMI and PLC. The PLC sends the command to the 440R-ENETR interface.
Over the optical bus, the 440R-ENETR interface instructs the DG safety relay
to generate the unlock and lock commands through the GuardLink circuit.
The DG and EM safety relays report status information over the optical bus
back to the PLC through the 440R-ENETR interface.
Figure 5 - Guard Locking Application Example Schematic and Logic
440N-Z21SS3PH 440G-LZS21SPRH
SensaGuard Guard Locking
Interlock Safety Switch
INPUT INPUT
440S-SF8D 440S-SF8D
Reset
+
S11 S21 S12 S22 A1 13 23
A TIME
Control
B
Status
C DG
9
440R-DG2R2T
440R-ENETR
S32 S42 X1 X2 A2 14 24
OUT X
Immediate
SWS
Acting
Loads
Table 2 - Guard Locking Application Example Configuration
Indicator
OUT
IN 1
IN 2
OUT X
IN X
Reset
FB Reset Assignment
Rockwell Automation Publication 440R-UM015C-EN-P - April 2018
440G-TZS21UPRH 440N-Z21SS2JN9
Guard Locking SensaGuard
Safety Switch Interlock
INPUT INPUT
440S-SF8D 440S-SF5D
898D-418U-DM2
Terminator
K1
Start K2
Stop
A1 X32 13 23 33 43
X4
Status
EM
440R-EM4R2
X3 A2 L12 L11 14 24 34 44
Feedback
100S
K1 K2
Contactors
Function Configuration ID: 0x6A
Safety Functions IN1
Input Type GuardLink
Input Type Not used
Output Type SWS
Input Mode SWS Disabled
Reset Type Monitored Manual
SOF
Logic
SMF Level
LOGIC Level
R
SOF Level
FB
OUT X OUT 14/24
L1 L2
L3
K1
K2
M
IN 1
R
FB