Omron CS1 - Current Consumption for Power Supply Units

Programmable Controllers SYSMAC CS1G/H 15
Current Consumption for Power Supply Units
■ Checking Current Consumption and Power Consumption
After selecting a Power Supply Unit based on considerations such as the power supply voltage, calculate the current and power
requirements for each Rack.
Condition 1: Current Requirements
There are three voltage groups for internal power consumption: 5 V, 26 V, and 24 V.
• Current consumption at 5 V (internal logic power supply)
• Current consumption at 26 V (relay driving power supply)
• Current consumption at 24 V (power supply output terminals) (C200HW-PA204S only)
Condition 2: Power Requirements
For each Rack, the upper limits are determined for the current and power that can be provided to the mounted Units. Design the system
so that the total current consumption for all the mounted Units does not exceed the maximum total power or the maximum current
supplied for the voltage groups shown in the following tables.
● CPU Racks and Expansion Racks
The maximum current and total power supplied for CPU Racks and Expansion Racks according to the Power Supply Unit model are
shown below.
Note 1:For CPU Racks, include the CPU Backplane and CPU Unit current and power consumption in the calculations.
2: For Expansion Racks, include the Expansion Backplanes current and power consumption in the calculations.
Conditions 1 and 2 below must be satisfied.
Condition 1: Maximum Current
(1) Total Unit current consumption at 5 V ≤ (A) value
(2) Total Unit current consumption at 26 V ≤ (B) value
(3) Current consumption for service power supply at 24 V ≤ (C) value (Only when using the service power supply from the
C200HW-PA204S.)
Condition 2: Maximum Power
(1) x 5 V + (2) x 26 V + (3) x 24 V ≤ (D) value
■ Example: Calculating Total Current and Power Consumption
Example: When the Following Units are Mounted to a CS-series CPU Rack Using a CS1W-PA204S Power Supply Unit
Note: For details on Unit current consumption, refer to Ordering Information.
Power Supply Units
Max. current supplied
(D) Max. total
power supplied
(A) 5 V (B) 26 V (C) 24 V
C200HW-PA204C
4.6 A 0.6 A
---
30 W
C200HW-PA204
4.6 A 0.6 A
---
30 W
C200HW-PA204S
4.6 A 0.6 A
0.8 A
30 W
C200HW-PA204R
4.6 A 0.6 A
---
30 W
C200HW-PA209R
9 A 1.3 A
---
45 W
C200HW-PD024
4.6 A 0.6 A
---
30 W
C200HW-PD025
5.3 A 1.3 A
---
40 W
CS1D-PA207R
7 A 1.3 A
---
35 W
CS1D-PD024
4.3 A 0.56 A
---
28 W
Type Model Quantity
Voltage group
5 V 26 V 24 V
CPU Backplanes
(8 slots)
CS1W-BC083 1 0.11 A --- ---
CPU Unit CS1H-CPU67H 1 0.82 A --- ---
Input Unit
CS1W-ID211 2 0.10 A --- ---
CS1W-ID291 2 0.20 A --- ---
Output Unit CS1W-OC201 2 0.10 A 0.048 A ---
Special I/O Unit CS1W-NC213 1 0.25 A --- ---
CPU Bus Unit CS1W-CLK23 1 0.33 A --- ---
Service power supply 0.3 A used --- --- 0.3 A
Current consumption
To ta l
0.11 A + 0.82 A + 0.10 A x 2 +
0.20 A x 2 + 0.10 A x 2 +
0.25 A + 0.33 A
0.048 A x 2 0.3 A
Result 2.31 A (≤ 4.6 A) 0.096 A (≤ 0.6 A) 0.3 A (≤ 0.8 A)
Power consumption
Total 2.31 A x 5 V=11.55 W 0.096 A x 26 V=2.496 W 0.3 A x 24 V=7.2 W
Result 11.55 + 2.496 + 7.2 = 21.246W (≤ 30W)