Alpha Technologies GMX-915 - Manual (Page 14)

1 017-932-B0-002, Rev. B
1.0 Introduction to the GMX Power Supply, continued
1.1 Terminal Block Overview
The GMX terminal block is located on the front left-hand side of the power supply. Below is a
brief description of each terminal.
Connections:
• AUX OUT (Auxiliary Output): The Auxiliary Output is an uninterruptible supply of power
that can be used to power external devices such as cable modems or ethernet hubs. For
115V units the auxiliary output is rated at 110V 150W and uses a 3A 250V fast blow fuse
(Alpha P/N 460-016-19). For 225V units the auxiliary output is rated at 220V 150W and
uses a 2A 250V fast blow fuse (Alpha P/N 460-157-19).
• LRI (Local/Remote Indicator): The LRI lamp option is used in conjunction with the
Automatic Performance Feature and connects to the LRI ± terminals on the terminal
block. The LRI circuit is rated at 12Vdc, 250mA. This option duplicates the function of the
red ALARM LED by illuminating an externally mounted red lamp in response to various
alarm conditions.
• V
out
± (Voltage Out): The AC output terminal is clearly marked for easy identification.
The Service Power Inserter (SPI) connects into the V
out
± terminals.
• GND (Ground): A ground wire (12-14AWG recommended) can be connected to this
terminal to permanently tie the chassis to utility ground. This may be desired when an AC
generator is connected to the power supply, because the chassis ground through the line
cord is removed when the line cord is plugged into the generator.
• V SEL (Voltage Select): The voltage select jumper can be configured for either the 63V
output (shown position), or the 87V output. One end of the jumper must be connected to
the V SEL terminal.
Fig. 1-2, GMX Terminal Block Overview
NOTE:
If using the Alpha SPI with the GMX power supply, cut the Anderson connector off of the SPI and strip the
wires 3/8".
+
AUX
OUT
–
+
LRI
–
+
V OUT
–
GND
87V
63V
SEL
V