Rockwell Automation Guardmaster Allen-Bradley 440R-S35001 - MSR300 Safety Relay; Terminal Locations and Panel Space; Host Module

Rockwell Automation Publication 440R-RM003A-EN-P - July 2021 17
Chapter 3
MSR300 Safety Relay
The best migration for the MSR300 safety relay is to the GSR relays. This
migration can use many of the GSR relays due to the various relay
configurations of the MSR300 safety relay.
Alternatively, you can migrate the MSR300 safety relay to the CR30 safety
relay. The CR30 safety relay requires a computer that runs Connected
Components Workbench™ software to accomplish the configuration. The
Connected Components Workbench software is a free download from
Rockwell Automation.
Terminal Locations and
Panel Space
Host Module
The host module for the MSR300 safety relay is either an MSR310P or an
MSR312P. You can replace both of these modules with either a DI or DIS safety
relay. The MSR3xx has a 35 mm (1.38 in.) wide body as compared to the
22.5 mm (0.89 in.) for the GSR relays.
If communications are used in the application, you must convert from RS-232
or DeviceNet® to EtherNet/IP™ and add the GSR ENTER module.
Figure 7 - Host Module Terminals and Panel Space [mm (in.)]
35 (1.38)
S11 S21 S31 GND RxD1 A1
Y10 S34 Y40 Y41 Y42 A2
Y11 Y12 Y13 Y31 Y32 Y33
S41 S51 TxD1 TxD2
MSR310P
440R-W23219
(RS232)
35 (1.38)
S11 S21 S31 V+ V- A1
Y10 S34 Y40 Y41 Y42 A2
Y11 Y12 Y13 Y31 Y32 Y33
S41 S51 SHD CANH CANL Y34
MSR312P
440R-W23220
(DeviceNet)
22.5 (0.89)
A1 A2 S11 S21
L12 L11 Y32 S34
13 14 23 24
S12 S22 S32 S42
GSR DI
440R-D22R2
22.5 (0.89)
A1 A2 S11 S21
L12 L11 Y32 S34
34 44 14 24
S12 S22 S32 S42
GSR DIS
440R-D22S2
A1 A2
LNK1
LNK2
GSR
Ethernet/IP
440R-ENETR
22.5 (0.89)