Selecting The Power Supply; Example Of Current Consumption/Power Calculations - Honeywell ML200 Series Installation And Commissioning Manual

Module
FEnet Module
Snet Module
Profibus-DP Module
Profibus Remote Interface
Profibus Remote Slave Interface
2.2

Selecting the power supply

The selection of a power module is determined by the current and voltage needed by the system. The
voltage requirement of a system is calculated as the sum of the current consumption by the digital I/O
modules, special modules, CPU module, power module and the communication module (installed on
the same base as the power module.)
The system does not operate normally, if the rated output capacity of the power module exceeds the
predefined limit.
Example of current consumption/power calculations for ML200-IEC
The following table describes which power supply module must be used in coordination with the
corresponding modules for ML200-IEC.
Type
CPU module
12 Slot basic base
Input module
Output module
FDEnet module
Profibus-DP
Current consumption
Power consumption
As the value of 5V current consumption is 5.58A, use 2MLP-ACF2 (5V: 6A) or 2MLP-AC23 (5V: 8.5A).
The system does not operate if 2MLP-ACF1 (5V: 3A) is used.
Chapter 2 - Calculating the power supply for components
Types of Model
2MLL-EFMF
2MLL-EFMT
2MLL-C22A
2MLL-C42A
2MLL-CH2A
2MLL-PMEA
2MLL-PSRA
2MLL-PSEA
Model Quantity
2MLI-CPUU 1
2MLB-M12A -
2MLI-D24A 4
2MLQ-RY2A 4
2MLL-EDMF 2
2MLL-PMEA 2
Calculation
Result
Calculation
Result
- 19 -
Current consumption (mA)
650
420
330
300
340
560
550
550
Voltage (5V)
0.96A
-
0.2A
2.0A
1.3A
1.12A
0.96+0.2+2+1.3+1.12
5.58A
5.58×5V
27.9W