Omron GRT1-ECT SmartSlice, Operation Manual

Page: 49 / 142

4 - 7
4 GRT1-ECT Details
GRT1-series EtherCAT Communication Unit - Operation Manual
4-1
The
GRT
1-ECT
in d
et
ail
4
4-
1-4 U
nit and
I/O Pow
er supply connector
The GRT1-ECT has 2 24 VDC power supply terminals:
Precautions for Correct Use
• The unit power supply is isolated from the external I/O power supply. Please use 2 separate
power-supplies to keep this isolation.
• 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.
The GRT1-ECT provides a Field Ground Terminal (FG) between the EtherCAT connectors. If noise is a
significant source of errors, ground the Field Ground Terminal (recommended wire 20 AWG to 14 AWG
or 0.5 to 2.0 mm
2
). Strip the wire between 8 mm and 10 mm of insulation at the ends of the wires
(stranded or solid wire) or use pin terminals with a pin (conductor) length of 8 mm to 10 mm.
4-1-4 Unit and I/O Power supply connector
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
4-1-5 Field Ground Terminal
UNIT
+V
-V
+V
-V
DC24V
INPUT
I/O
A
24 VDC
24 VDC
B
FG
0 0
2
3
4
5
6
7
8
9
1
0
2
3
4
5
6
7
8
9
1
ON ON
+V +V
- V
+V +V
-V -V
UNIT UNIT
I/O
DC24V DC24V
INPUT
INPUT
REGS REGS
NC
NC
ADR
ADR
BACK
BACK
1
2
3
4
RUN RUN
ERR ERR
TS TS
UNIT PWR UNIT PWR
I/O PWR I/O PWR
OMRON GRT1-ECT
x10 x10 x1 x1
IN
ADR
OUT
L/A
L/A
FG
Flat-blade
Screwdriver
Wire