18
System Configuration
Section 1-2
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-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
Summary of Contents for CP1L-L14D Series
Page 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Page 3: ...iv...
Page 9: ...x...
Page 13: ...xiv TABLE OF CONTENTS...
Page 21: ...xxii...
Page 33: ...xxxiv Conformance to EC Directives 6...
Page 65: ...32 Function Blocks Section 1 5...
Page 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Page 523: ...490 Troubleshooting Unit Errors Section 9 4...
Page 531: ...498 Replacing User serviceable Parts Section 10 2...
Page 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Page 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Page 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Page 669: ...636 Index...
Page 671: ...638 Revision History...