Omron GRT1-ECT SmartSlice, Operation Manual

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7 GRT1-ECT Installation
GX-series EtherCAT Slave Unit User’s Manual
7-3 Inst
allin
g the Power Sup
p
lies
7
7-3
-3 Smart
S
lice I/O Power
Supply -
Calculation
The SmartSlice I/O power supply is limited to a total current consumption of 4 A.
This power limit is related to the connected Inputs and Outputs. If the limit is exceeded it is required to
add one or more additional power supplies.
 Calculate required addition of Power Supplies.
The maximum I/O current consumption is 4 A.
1
Calculate the total current consumption.
Calculate all external I/O of all connected SmartSlice I/O Units, this includes other Units like
Turnback Units.
Refer to the
GRT1 Series SmartSlice I/O Units Operation Manual (W455) for the current value
of each SmartSlice I/O Unit.
Reference
The current consumption calculation is important for actual occuring current consumption.
If I/O can not be activated simultaniously this can influence the calculation.
Contact Field Automation certified engineers for more details.
2
If the current consumption exceeds 4 A provide a separate external I/O power supply.
(1) An external I/O power supply can be mounted between SmartSlice I/O Units.
OMRON advises the GRT1-PD2(G) I/O Power Supply Unit for this situation.
(2) External power supplies can also be connected to a Left Turnback Unit (GRT1-TBL).
The GRT1-TBL is equipped with separate power supply terminals for the Unit power
supply and I/O power supply.
Reference
•
Creating separate hardware groups for (groups of) inputs and (groups of) outputs can also be
a reason to separate the SmartSlice I/O Units.
•
Always use isolated power supplies for the power supplies.
•
Power is not supplied through the GCN2-100 Turnback Cable (Refer to the Wiring Example )
7-3-3 SmartSlice I/O Power Supply - Calculation