Omron CP1L - 12-2007, Operation Manual

Page: 51 / 673

18
System Configuration
Section 1-2
CPU Units with 30 or 40 I/O Points and AC Power (CP1L-M
@@
DR-A)
When CP1W or CPM1A Expansion Units or Expansion I/O Units are con-
nected to a CPU Unit with 30 or 40 I/O Points and AC Power (CP1L-M
@@
DR-
A), it may not be possible to use the entire 300 mA from the external power
supply due to restrictions in the power supply capacity. The entire 300 mA
from the external power supply can be used if Expansion Units and Expansion
I/O Units are not connected.
Calculation Examples of Restrictions in External Power Supply Capacity
Calculate the external power supply capacity using the following calculation
example.
CPU Units with 14 or 20 I/O Points and AC Power (CP1L-L
@@
DR-A)
When CP1W or CPM1A Expansion Units or Expansion I/O Units are con-
nected to a CPU Unit with 14 or 20 I/O Points and AC Power (CP1L-L
@@
DR-
A), the external power supply cannot be used. If no Expansion Units or
Expansion I/O Units are connected, up to 200 mA can be used.
CPU Units with DC Power
CPU Units with DC power do not have an external power supply.
■ Restrictions Imposed by Ambient Temperature
There are restrictions in the power supply voltage and output load current
imposed by the ambient temperature for CPU Units with DC power. Use the
CPU Unit within the following ranges of power supply voltage and output load
current.
CPU Units with Relay Outputs (CP1L-
@@@
DR-D)
Relay Output Load Current Derating Curves for CPU Units and Expansion I/O
Units
Note The above restrictions, apply to the relay output load current from the CPU
Unit even if Expansion I/O Units are not connected.
Item CPU Unit Expansion Unit Total Restriction
1st Unit 2nd Unit 3rd Unit
CP1L-M40DR-A CP1W-DA041 CP1W-DA041 CP1W-DA041
5 V 0.22 A 0.08 A 0.08 A 0.08 A 0.46 A
24 V 0.08 A 0.124 A 0.124 A 0.124 A 0.452 A
Power con-
sumption 5 V
×
0.46 A = 2.3 W
24 V
×
0.452 A = 10.848 W
13.148 W
≤
18.5 W
Applicable
external power
supply capacity
18.5 W (total external power supply capacity)
−
13.148 W = 5.352 W
5.352 W/24V = 0.223 A
0.223 A
≤
0.3 A
Note If the results exceeds 0.3 A, reduce the current consumption to 0.3 A or less.
CP1L-L14DR-D
CP1L-L20DR-D
CP1L-J14DR-D
CP1L-J20DR-D CP1L-M30DR-D CP1L-M40DR-D
50%
100%
55
°
C 40 45
Power voltage:
20.4 VDC
Power voltage:
21.6 VDC
0%
Ambient temperature
50%
100%
55
°
C 45 35
0%
Power voltage:
21.6 VDC
Power voltage:
20.4 VDC
Ambient temperature
50%
100%
55
°
C 45 35
0%
50
Power
voltage:
21.6 VDC
Power
voltage:
20.4 VDC
Ambient temperature