Alpha Technologies GMX-915 - Manual (Page 28)

28 017-932-B0-002, Rev. B
4.0 Configuration, continued
4.2 AC Output Voltage Reconfiguration
Tools Required: Small flat-blade torque screwdriver
The output voltage on GMX Power Supplies can be easily reconfigured by moving the Output
Tap jumper to 87 or 63Vac.
Output Voltage Reconfiguration Procedure:
1. Unplug the Line cord. Turn off the battery breaker and unplug the battery connector on
the front of the unit.
2. Loosen the Tap Select wire screw on the terminal block. Move the 87V or 63V end of the
Tap Select wire to the 63V or 87V output voltage position, as desired.
Fig. -2, Transformer Output Tap Connector
Output voltage reconfiguration must only be performed by qualified personnel.
ATTENTION:
Before proceeding, make certain all power has been removed from the power supply by
unplugging the power supply from the AC power source, front panel connections, and
disconnecting the battery connector. Failure to do so could expose the technician to
potentially lethal voltages.
WARNING!
3. Re-tighten the Tap Select wire screw and torque to 0.8 Nm (7.0 in-lbs).
. Reconnect the front panel connections. Turn on the battery breaker, and plug in the line
cord. Verify operation of the power supply.
CAUTION!
Do not jumper the 63V terminal and 87V terminal together.
87V Tap
63V Tap
+
AUX
OUT
–
+
LRI
–
+
V
OUT
–
GND
87V
63V
SEL
V
NOTE:
The output voltage automatically configures within a few seconds after start up. Start the power supply from
an AC source after reconfiguring the output voltage.
Must be jumped to V SEL