Omron CP1E-ED

2-15
2 Basic System Configuration and Devices
CP1E CPU Unit Hardware User’s Manual(W479)
2-4 Unit Current Consumption and External
Power Supply Capacity
2
2-4-1 External Power Supply Capacity When Expansion I/O Units or Expansion Units are Connected
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.
Power of 24 VDC can be supplied to external devices from E30/40, N30/40/60 or NA20 CPU Units.
Calculate the usable capacity of external power supply according to the following example.
2-4-1 External Power Supply Capacity When Expansion I/O Units or
Expansion Units are Connected
Calculation Examples of the Capacity Limit of External Power
Supply
CPU Unit Expansion Units Other
devices
using PLC
internal
power supply
Total Limit
1
st
unit 2
nd
unit 3
rd
unit
CP1E-
40D-A
CP1W-
DA041
CP1W-
DA041
CP1W-
DA041
NV3W-
MR20L
5V 0.21A 0.08A 0.08A 0.08A 0.2A 0.65A ≤1.2A
24V 0.09A 0.124A 0.124A 0.124A − 0.462A ≤0.7A
Power
consumption
5 V×0.65 A=3.25 W
24 V×0.462 A=11.088 W
14.258 W ≤18.5 W
Usable capacity
of external
power supply
18.5 W (Total of usable power consumption) − 14.388 W= 4.162 W
4.162 W/24 V=0.173 A
0.173A ≤0.3A