Omron TJ2-MC02 Hardware Reference Manual page 250

Hardware reference
Power supply connector
The GRT1-ECT has 2 24 VDC power supply terminals:
/i
Label Power supply terminal Description
A Unit power supply Power supply to the internal circuits of the GRT1-ECT
terminal and to the internal circuits of the connected
SmartSlice I/O Units (through the SmartSlice bus)
B External I/O power Power supply to the external I/Os connected to the
supply terminal SmartSlice I/O Units
Note
The unit power supply is isolated from the external I/O power sup-
ply. Please use 2 separate power-supplies to keep this isolation.
Note
The unit power supply and the external I/O power supply are
not transferred through the GCN2-100 Turnback cable. The
GRT1-TBR units have the same power supply terminals as the
GRT1-ECT.
HARDWARE REFERENCE MANUAL
fig. 132
UNIT
+V
A
24 VDC
-V
I/O
+V
B
24 VDC
-V
DC24V
INPUT
244