Mitsubishi FX3U-?*MR/ES User Manual page 118

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
4
Determine whether the devices can be connected to the main unit.
Calculate the current to confirm whether the selected extension devices can be connected.
1. Calculate the current consumption of the internal 24V DC.
The positive value from the calculation means it is expandable
Power supply
capacity for
internal 24V DC
Main unit
1 -3
mA
2. Calculate the current consumption of the built-in 5V DC power supply
Capacity of 5V DC
power supply
Main unit
1 -2
mA
If the calculation results for the current consumption for the startup, the internal 24V DC power supply and 5V
DC power supply are negative values, the current consumption exceeds the capacity of the built-in power
supply.
Reexamine the system configuration adding input/output powered extension units.
→ Refer to Section 6.6 "Expansion of FX2N Series I/O Powered Extension Unit (Calculation of Current
If the calculation results for the current consumption for the internal 24V DC power supply and 5V DC power
supply are negative values, add an input/output powered extension unit.
→ Refer to Section 6.6 "Expansion of FX2N Series I/O Powered Extension Unit (Calculation of Current
If the calculation results for the current consumption by 5V DC is a negative value, add an extension power
supply unit (FX
110
Current
consumprion
Total of current
consumed by
extension devices
2 -3
-
mA
Current
consumption
Total of current
consumed by
extension devices
2 -2
-
mA
-1PSU-5V).
3U
→ Refer to Section 6.7 "Expansion of Extension Power Supply Unit (FX3U-1PSU-5V)"
6.5 Expansion of Main Unit (Calculation of Current Consumption)
.
Calculation result
=
mA
Calculation result
=
mA
6 Examination of System Configuration
0mA
.
0mA
Consumption)".
Consumption)"