Unit Current Consumption And External Power Supply Capacity; External Power Supply Capacity When Expansion I/O Units Or Expansion Units Are Connected - Omron CP1E Series User Manual

2-4 Unit Current Consumption and
External Power Supply Capacity
This section describes the current consumption and external power supply capacity of units used by the
CP1E.
2-4-1 External Power Supply Capacity When Expansion I/O Units or
Expansion Units are Connected
Power of 24 VDC can be supplied to external devices from CPU Units with 30 or 40 I/O points.
Calculate the usable capacity of external power supply according to the following example.
Calculation Examples of the Capacity Limit of External Power
Supply
5V
24V
Power consump-
tion
Usable capacity of
external power
supply
CP1E CPU Unit Hardware User's Manual(W479)
CPU Unit
st
1
CP1E- 40D -A CP1W-
DA041
0.21A 0.08A
0.09A 0.124A
5 V×0.45 A=2.25 W
24 V×0.462 A=11.088 W
18.5 W (Total of usable power consumption) − 13.388 W=
5.162 W
5.162 W/24 V=0.215 A
2 Basic System Configuration and Devices
Expansion Units
nd rd
unit 2 unit 3 unit
CP1W- CP1W-
DA041 DA041
0.08A 0.08A
0.124A 0.124A
Total Limit
≤1.2A
0.45A
≤0.7A
0.462A
≤18.5 W
13.388 W
≤0.3A
0.215A
2-15
2