Power wiring – Liebert 232 User Manual

Page 6

Advertising

Rev. (08-JULY-98)

Power Wiring

CAUTION: The SiteGate-232 modules are Class 2 devices (less than 30 VAC). Take appropriate

isolation measures when mounting a SiteGate-232 module in a control panel where Class 1 devices or

wiring are present.

NOTE: Whenever possible, terminate and verify power and communication to all modules before

terminating any inputs and outputs.

1. Terminate AC power at the wiring source (usually a circuit breaker or other AC source).

2. Apply power to the transformer.

3. Turn the SiteGate-232's power switch OFF (see Figure 1 for location) to prevent the module from

being powered up until proper voltage is verified.

4. If you are using an internally grounded transformer, terminate the Earth Ground wire to the Gnd

screw terminal as indicated in Figure 4.

CAUTION: Be sure to follow proper polarity on power connections. Note INCORRECT power wiring

in Figure 5.

If the transformer is not internally grounded, terminate the two power wires as indicated in

Figure 6.

5. Verify that 24 VAC is present at the power input terminals and turn the SiteGate-232's power

switch on.

6. Once the power wiring procedure has been completed, the "Run" LED should turn on and begin

blinking. If this does not occur, turn the power switch off and check for wiring errors.

Figure 5:

Figure 5: INCORRECT

INCORRECT

INCORRECT wiring of the

wiring of the

SiteGate-232 module powered by

transformer with Earth Ground

Figure 4: SiteGate-232 module

Ground

Figure 6: SiteGate-232 module

Ground

Advertising

Popular Brands

Popular manuals