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37
Power Supply Wiring
Section 3-2
3-2-1
Connecting the Slice I/O Terminal Power Supply
The Communications Unit has two sets of power supply terminals for the fol-
lowing two systems.
Evaluating the Power
Supply Requirements
Unit Power Supply
The maximum power consumption for a Slice I/O Terminal is 80 W per block.
1,2,3...
1. Calculate the power consumption of all of the Slice I/O Units connected to
the Communications Unit.
2. If the power consumption exceeds 80 W, mount a Right Turnback Unit
(GRT1-TBR) on the Slice I/O Unit at the point where the power consump-
tion is less than 80 W.
3. Connect the 24 VDC Unit power supply to the Left Turnback Unit (GRT1-
TBL).
Power Consumption of Slice I/O Units
For details on the power consumption of the various Slice I/O Units, refer to
Appendix C Power Consumption and Weight Tables
.
Note
(1) There is a small amount of electrical resistance in the connections be-
tween the Slice I/O Units. This can result in a voltage drop of up to 2 V
when 64 Slice I/O Units are connected at 4 A. Consider this voltage drop
when designing the system.
(2) When dividing the power supply, always wire (supply) the power from the
same power supply. (Refer to the following wiring example.)
I/O Power Supply
The maximum I/O current consumption is 4 A.
1,2,3...
1. Calculate the total current consumption used by all external I/O of the con-
nected Slice I/O Units (including other Units such as Turnback Units, but
excluding the GRT1-OD4G-3, which has a separate I/O power supply con-
nection).
2. If the current consumption exceeds 4 A or you want to provide separate
systems for inputs and outputs, divide the Slice I/O Units at the desired
point with a GRT1-PD2, GRT1-PD2G, GRT1-PD8 or GRT1-PD8-1 I/O
Power Feed Unit, and provide a separate external I/O power supply.
3. It is also possible to provide a separate external I/O power supply at a Left
Turnback Unit (GRT1-TBL).
I/O Current Consumption of Slice I/O Units
For details on the I/O current consumption of the various Slice I/O Units, refer
to
Appendix D I/O Current Consumption Table
Note
(1) Always use isolated power supplies for the power supplies.
(2) Power is not supplied through the GCN2-100 Turnback Cable. (Refer to
the following wiring example.)
Power supply
terminals
Description
Unit power supply
terminals
These terminals supply power to the Communications Unit’s
internal circuits as well as the connected Slice I/O Units’ inter-
nal circuits (supplied through the Slice bus).
I/O power supply ter-
minals
These terminals supply power to the external I/O that is con-
nected to the Terminal’s Slice I/O Units.
Summary of Contents for SMARTSLICE GRT1-DRT
Page 1: ...OPERATION MANUAL Cat No W455 E1 08 SmartSlice GRT1 Series Slice I O Units ...
Page 3: ...SmartSlice GRT1 Series Slice I O Units Operation Manual Revised December 2018 ...
Page 4: ...iv ...
Page 6: ...vi ...
Page 20: ...xx EC Directives 6 ...
Page 62: ...42 Connecting Turnback Cables Section 3 3 ...
Page 250: ...230 Maintenance Information Window Section 7 3 Maintenance Information Window ...
Page 292: ...272 GRT1 CP1 L Positioning Unit Section 7 5 ...
Page 300: ...280 GRT1 END End Unit Section 8 5 Dimensions 11 9 11 9 55 7 1 5 19 5 83 5 2 9 2 9 OMRON ...
Page 322: ...302 Troubleshooting by Unit Section 9 5 ...
Page 350: ...330 Explicit Messages Appendix A ...
Page 354: ...334 Power Consumption and Weight Tables Appendix C ...
Page 356: ...336 I O Current Consumption Table Appendix D ...
Page 364: ...344 Revision History ...
Page 365: ......