Hardware reference
HARDWARE REFERENCE MANUAL
244
Revision 5.0
fig. 132
Power supply connector
The GRT1-ECT has 2 24 VDC power supply terminals:
/i
UNIT
+V
-V
+V
-V
DC24V
INPUT
I/O
A
24 VDC
24 VDC
B
Label Power supply terminal Description
A
Unit power supply
terminal
Power supply to the internal circuits of the GRT1-ECT
and to the internal circuits of the connected
SmartSlice I/O Units (through the SmartSlice bus)
B
External I/O power
supply terminal
Power supply to the external I/Os connected to the
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.