46
Example 2 Assume that six DC Input Units and two High-speed Counter Units are mounted
to a Rack, along with the PS221 Power Supply. The following table shows how
the total power consumption is calculated.
Voltage Current consumption Power consumption
5 V
(1) 0.01 x 6 + 0.3 x 2 = 0.66 A (≤ 2.7 A)
(1) x 5 V = 3.3 W
26 V (2) 0 (2) 0
24 V
(3) Service power supply = 0.8 A (≤ 0.8A)
(3) x 24 V = 19.2 W
Total ---
22.5 W (≤ 28 W)
Example 3 Assume that the following Units are mounted to a Rack to which a C200H-
CPU31-E is mounted. The following table shows how the total power consump-
tion is calculated.
• SYSMAC LINK Units (SLK23): 1
• Contact Output Units (OC221): 4
• High-density Input Units (ID217): 1
• High-density Output Units (OD219): 1
• High-speed Counter Units (CT002): 1
• Current for ID217: 0.3 A
Voltage Current consumption Power consumption
5 V (1) 0.6 + 0.01 x 4 + 0.12 + 0.27 + 0.3
= 1.33 A (≤ 3.0 A)
(1) x 5 V = 6.65 W
26 V
(2) 0.075 x 4=0.30 A (≤0.6 A)
(2) x 26 V = 7.8 W
24 V
(3) Service power supply = 0.3 A (≤ 0.8A)
(3) x 24 V = 7.2 W
Total ---
21.65 W (≤ 22 W)
Example 4 Assume that the following Units are mounted to a rack to which is mounted the
C200H-CPU31-E. The following table shows how the total power consumption
is calculated.
• SYSMAC NET Link Units (SNT32): 1
• Central Power Supply Adapter (Current 0): 1
• Contact Output Units (OC221): 2
• DC Input Units (ID212): 3
• High-speed Counter Units (CT002): 1
• Current for ID212: 0.4 A
Voltage Current consumption Power consumption
5 V
(1) 1.0 + 0.01 x 5 + 0.3 = 1.35 A (≤ 3.0 A)
(1) x 5 V = 6.75 W
26 V
(2) 0.075 x 2=0.15 A (≤0.6 A)
(2) x 26 V = 3.9 W
24 V
(3) Current=0.4 A(≤0.8 A)
(3) x 24 V = 9.6 W
Total ---
20.25 W (≤ 22 W)
Maximum Current and Power Supplied Section 4-3
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