Using The Shutdown Function; Standby Switch; Controlling The Shutdown Function Via The J2 Connector; Table 3.2 Switch Settings For Shutdown Circuit Logic - Xantrex XHR 7.5-130 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
entire 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 connector, using a 2.5 V to 15 V signal or a transistor-transistor logic (TTL)
compatible input. The input lines for the Shutdown circuit are optically isolated.
STANDBY The STANDBY switch is a press-button switch located on the power supply's front
Switch panel. Pushing the switch to its IN position activates the Shutdown circuit. The
output voltage and current drop to zero and the S/D (shutdown) LED turns on.
Pushing the switch to its OUT position returns the power supply to normal operation.
Controlling The Shutdown circuit accepts a 2.5 V to 15 V signal to disable or enable the power
supply's output. Make connections for signals at connector J2, located on the unit's
the Shutdown
rear panel. Set rear panel switch SW1-7 to select signal logic. See
Function via
information about making J2 connector or SW1 switch changes.
the J2
Connector
To activate the Shutdown function:
1. Turn the power supply OFF.
2. Connect the signal source to J2 connector terminal 11 (Shutdown Input/positive)
3. Set switch SW1-7 to select the desired circuit logic as set out in
4. Turn on the power supply.
The power supply will operate as described in
select and the level of the input signal you provide. The S/D LED on the front panel
turns on when the Shutdown circuit is activated.

Table 3.2 Switch Settings for Shutdown Circuit Logic

Switch SW1-7 Setting Source Signal Signal Level
OFF (OPEN)
(Active low, default)
ON (CLOSED)
(Active high)
Note:If switch SW1-7 is set to ON but there is no signal applied, the S/D LED turns
on and the power supply will not provide an output until the HIGH signal level is
applied.
Revision A
and terminal 12 (Shutdown Return).
2-15 V
0-0.4 V
2-15 V
0-0.4 V
Using the Shutdown Function
Table 3.2 according to the logic you
Supply Output
HIGH OFF
LOW ON
HIGH ON
LOW OFF
Local Operation
Section 1 for more
Table 3.2.
S/D LED
ON
OFF
OFF
ON
61