Omron GRT1-ECT SmartSlice, Operation Manual

Page: 88 / 142

7 GRT1-ECT Installation
7 - 12 GX-series EtherCAT Slave Unit User’s Manual
Power supply specifications:
OMRON recommends the OMRON S8JX series power supplies for Slaves.
The power limit for the Unit power supply is 80W.
This power limit is related to the connected SmartSlice Units. If the limit is exceeded it is required to
separate the SmartSlice Units in two or more groups. Mount Turnback Units to the SmartSlice Units that
are separated and connect the Turnback Units with a Turnback Cable to continue the Unit
Communication channels.
 Calculate required separation of SmartSlice I/O Units.
The maximum total power consumption for SmartSlice I/O Units is 80 W per block.
1
Calculate the power consumption of all connected SmartSlice I/O Units.
Refer to the GRT1 Series SmartSlice I/O Units Operation Manual (W455) for the power rating of
each SmartSlice I/O Unit.
2
If the total power consumption exceeds 80 W then regroup the SmartSlice I/O Units.
(1) Create a first group with a power consumption less then 80W.
(2) Mount a Right Turnback Unit (GRT1-TBR) at the side of this first group.
(3) Mount a Left Turnback Unit (GRT1-TBL) at the left side of the second group.
(4) Connect the Right- and Left Turnback Unit with a Turnback Cable.
(5) Connect the 24 VDC Unit power supply to the Left Turnback Unit (GRT1-TBL).
Reference
•
When separating SmartSlice I/O Units supply all SmartSlice groups with power from the same
power supply. (See also the
Wiring Example ).
•
Always use isolated power supplies for the power supplies.
•
Power is not supplied through the GCN2-100 Turnback Cable (Refer to the Wiring Example )
7-3-2 Unit Power Supply - Calculation
Item Specification
Output voltage 24 VDC
±
10%
Output ripple 600 mVp-p
Output current
The capacity to supply at least the power of the total current
consumption of all connected Units.
Isolation
Between output and AC power supply and between output and
chassis ground