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SIMATIC 545/555/575 System Manual

Installing 575 System Hardware

The 16-slot VMEbus base provides space under the lower module guiderails

to install the optional 575 fan assembly (PPX:575–2131). The fan assembly

has a switch, located on the rear panel, for selecting 110 or 220 VAC

operation. Before mounting the fan assembly, ensure that the voltage

setting on the fan assembly unit matches your input voltage, and connect

power lines to the AC terminals.

Follow these steps to ensure voltage setting matches input voltage.

NOTE: The fan assembly unit is shipped with the voltage selector switch set

for 110 VAC operation. If your input voltage is 220 VAC, be sure to set the

voltage selection on the unit as described below.

CAUTION

Failure to match voltage selection to your input voltage can result in damage to

the fan assembly unit.

Be sure that the voltage selector switch is set to match your input voltage.

1. Ensure that all power to the system is off before making any changes to

the voltage selector switch (shown in Figure 4-1).

2. To set the voltage, use a flat-bladed screwdriver to rotate the voltage

selector switch to the required position.

110

220

LINE

NEUTRAL

GROUND

AC Power TerminalsVoltage Selector Switch

Figure 4-1 Fan Assembly Rear Panel

To provide power to the fans, follow these steps:

1. Remove the terminal block shield from the AC terminals on the rear

panel.

2. Connect power lines to the AC terminals (shown in Figure 4-1).

3. Replace the terminal block shield.

Selecting Voltage

for Fan Operation

Wiring the AC

Power Terminals

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Siemens SIMATIC TI500 Especificaciones Pagina 90