Using The Shutdown Function; Standby Switch; Controlling The Shutdown Function Via The J2 Connector - Xantrex XFR 7.5-140 Operating Manual

Using the Shutdown Function

Use the shutdown function to disable or enable the supply's output so that you can
make adjustments to either the load or the power supply without shutting off the
power supply. Activate this function from the front panel at any time by using the
STANDBY switch. You can also activate it via remote control through the rear panel
J2 Programming and Monitoring connector, using a 2.5 V to 15 V signal or a
transistor-transistor logic (TTL) compatible signal. The input lines for the Shutdown
circuit are optically isolated.
STANDBY The STANDBY switch is a press ON/press OFF switch located on the power
Switch supply's front panel. Push the switch to its IN position to activate the shutdown
circuit. The output voltage and current fall to zero and the red S/D (Shutdown) LED
turns on. Push the switch once more to reset it to its OUT position and resume normal
power supply operation.
Controlling The shutdown circuit accepts a 2.5 V to 15 V signal to disable or enable the power
the Shutdown supply output. Make connections for signals at connector J2, located on the unit's
rear panel. Set rear panel switch SW1-7 to select signal logic. See "Rear Panel
Function via
Connectors and Switch" on page 18 for more information about making J2 connector
the J2
and SW1 switch changes.
Connector
To activate the shutdown function:
1. Turn OFF the power supply.
2. Connect the signal source to J2 connector terminal 15 (Shutdown Input/positive)
and terminal 14 (Shutdown Return).
3. Set switch SW1-7 to select the desired circuit logic as set out in Table 3.2.
4. Turn on the power supply. The power supply will operate as described in the
Supply Output
level of the input signal. The S/D (Shutdown) LED on the front panel turns on
when the Shutdown circuit is activated.
Release 3.1
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column in Table 3.2, according to the logic that you select and the
Local Operation
Using the Shutdown Function
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