KEPCO RCW 750W Series - Manual (Page 13)

RCW 750W 120607
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FIGURE 7 CONNECTIONS FOR REMOTE VOLTAGE CONTROL OF THE RCW 750W POWER SUPPLY
3.6 REMOTE TURN-ON TURN-OFF
When power is ON at the source, the output may be turned ON or OFF with the remote control fea-
ture. The remote ON/OFF RC (Remote Control) terminals can be controlled by a logic level (2.4V
to 24V "high" and 0.0 to 0.4V "low"), or a contact closure. When the RC terminals (on the front
panel) are short circuited by using either a mechanical switch or a low level logic signal, the RCW
750W output is cut OFF. At low level logic, the maximum sink current is 1.6mA. With the RC termi-
nals open the RCW 750W output returns to within specifications. The RC terminals should remain
open if not used (see Figure 6).
The RC terminals are isolated from the AC input and DC output terminals.
3.7 PARALLEL OPERATION
Identical RCW 750W Power Supplies can be connected in parallel. The output current of each
Power Supply can be balanced by connecting together all the CB terminals, connecting together all
the (–) S terminals and connecting together all the (+) S terminals of up to two RCW 750W Power
Supply units (see Figure 8). The current tolerance with up to two RCW 750W units in parallel
should be within (±) 10% of the rated output current. With two RCW 750W units in parallel, the out-
put voltage of any Power Supply individually must be within 5% of the other power supply output
voltages. The output current range is 20 to 90% of the nominal output current.