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Maximum Current and Power Supplied
Example 4
Calculation of Power
Consumption for Each
Rack (Examples)
High-density and Mixed I/O Units (MD215):
Current for MD215:
Assume that the following Units are mounted to a rack to which is mounted the
C200H-CPU11-E. The following table shows how the total power consumption
is calculated.
Voltage
Current consumption
5 V
(1) 0.01 x 5 + 0.3 x 1 = 0.35 A ( 0.7 A)
26 V
(2) 0
24 V
(3) Current=0.5 A( 0.8 A)
Total
---
Peripheral Interface Unit (IP006)
SYSMAC NET Link Units (SNT32):
Central Power Supply Adapter (Current 0):
DC Input Units (ID212):
High-speed Counter Units (CT002):
Current for ID212:
The total power consumption for each Rack can be obtained from the following
formulas:
CPU Rack: Total power consumption for each Unit + 7 (8)
Where:
7 = Power consumption of the CPU,
(8) = Power consumption of the CPU11-E,
0.6 = 60% efficiency, and
0.55 (1) = Power rate (Number in parentheses: when CPU03-E is used.)
Expansion I/O Power Supply/Remote I/O Slave Unit:
Total power consumption for each Unit + 2
Where:
2 = Power consumption of the I/O Power Supply or
Remote I/O Slave Unit,
0.6 = 60% efficiency, and
0.55 (1) = Power rate (Number in parentheses: when
PS211, RT002-P or RT202 is used.)
1
0.3 A
Power consumption
(1) x 5 V = 1.75 W
(2) 0
(3) x 24 V = 12 W
13.75 W ( 18.5 W)
1
1
5
1
0.5 A
0.6 x 0.55 (1)
0.6 x 0.55 (1)
Section
4-3
(VA)
(VA)
39
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