Siemens SIMATIC Box PC 820, Руководство пользователя

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1-18
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
1.3.6 Removing and Installing the Power Supply Unit
S
Open the housing as described in Section 1.3.1 (Box PC 820) or Section 1.3.4
(PC FI45 V2).
S
Release the three screws with which the bent clips of the power supply support
are fastened to the housing.
S
Pull the power supply unit and its support right out of the housing.
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.
Changing the Supply Voltage
The standard power supply is for 115/230V networks. The voltage selection switch
is located at the side of the housing below the ventilation slots.
You must ensure that the supply voltage set at the voltage selection switch
corresponds to the local supply voltage.
The voltage selection ist made automatically in wide range power supply units.
Selecting the Supply Voltage
1)
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
required 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) 1) Power supply
connector (input)
On/off switch 1)
B
Supply voltage 1)
selection switch
Marking 1)
Figure 1-14 Connecting the Supply Voltage
1)
Not applicable for devices with wide range power supply unit
System Unit
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