Power Supply Connection; Dg Safety Relay - Allen-Bradley Guardmaster GuardLink User Manual

Power Supply Connection

Bulletin 871A field-attachable quick-disconnect connectors can be used as
shorting plugs during installation, troubleshooting, and for long distances.
When the distance between taps exceeds 30 m (98.4 ft), a tap must be inserted
into the GuardLink system at least every 30 m (98.4 ft). A shorting plug must
then be added to the J3 connector.
that are required to create a shorting plug.
IMPORTANT For 5-pin OSSD taps, a shorting plug (catalog number 898D-418U-DM) can
be used in place of the terminal chamber (catalog number 871A-TS5-DM).
For 8-pin taps, a shorting plug (catalog number 898D-81RU-DM2) can be
used in place of the terminal chamber (catalog number 871A-TS8-DM1).
Figure 26 - Shorting Plug Schematics
Use 871A-TS8-DM1 or 898D-81RU-DM2
for 8-pin OSSD and EMSS taps
1
2
3
4
5
6
7
8
Many Bulletin 1606 power supplies are SELV, PELV, and Class 2-compliant.

DG Safety Relay

To comply with the CE (European) Low Voltage Directive (LVD), a DC
source compliant with protected extra low voltage (PELV) or, under certain
conditions, a safety extra low voltage (SELV) per IEC 60204-1 must power the
DG safety relay.
For the USA, a PELV supply is required, per NFPA 79.
Figure 27 shows the power supply connections for the DG safety relay.
Connect terminal A1 to +24V DC. Terminal A2 must be connected to the
common of a 24V supply.
Figure 27 - DG Power Supply Connections
Connect +24V DC
Connect 24V Common
to Terminal A1
to Terminal A2
S12 S22 S32 S42
A1 A2 S11 S21
PWR/Fault
OUT
IN 1
IN 2
OUT X
IN X
Reset
FB
Config/Set
DG
Reset
Sel./Save
Time
X1 X2 X3 X4
13 14 23 24
Rockwell Automation Publication 440R-UM015C-EN-P - April 2018
Power, Ground, and Wire
Figure 26 shows the wiring connections
Use 871A-TS5-DM or
898D-418U-DM for 5-pin OSSD taps
1
2
3
4
5
Chapter 4
Use 871A-TS5-DM for
5-pin EMSS taps
1
2
3
4
5
41