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SIMATIC PC BI45/FI45 PII, Technical Description
C79000-G7076-C794-03
1.4.6
Removing and Installing the Power Supply Unit
S
Open the system unit as described in Section 1.4.1 (BI45) or Section 1.4.4
(FI45).
S
Release the three screws with which the bent clips of the power supply
support are fastened to the system unit.
S
Pull the power supply unit and its support right out of the system unit.
S
Disconnect the cables from the motherboard, the hard disk, and the bus
expansion unit, and write down their previous connections.
S
Release the four screws with which the power supply support is attached
to the power supply unit.
To install the power supply unit, proceed in reverse order.
The standard power supply for the SIMATIC PC is set for 115/230V
networks. The voltage selection switch is located at the rear of the system
unit below the ventilation slots.
You must ensure that the supply voltage set at the voltage selection switch
corresponds to the local supply voltage.
If the voltage specified at the selection switch does not match the local
supply voltage, you must change the voltage selection switch so that you can
read the voltage value set below the green triangle on the right. Use a small,
flat screwdriver to lever out the part with the voltage values and reinsert it in
the appropriate position.
Power supply
connector (output)
Power supply
connector (input)
On/off switch
B
Supply voltage
selection switch
Figure 1-13 Connecting the Supply Voltage
Changing the
Supply Voltage
Selecting the
Supply Voltage
System Unit
