iPECS UCP - 2.15 Call Forward

iPECS UCP
Hardware Description and Installation Manual Issue 1.3
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5.3 Main Cabinet PSU Installation
The Power Supply Unit (PSU) is factory installed in slot 10 of the Enhanced Main Cabinet. A
back-up power supply may be installed in slot 9 to provide redundant power operation. When a
back-up PSU is installed, should the main PSU fail, the back-up PSU immediately provides power
to all of the Modules in the Main Cabinet.
Prior to turning the power switch ON, verify the PSU is capable of powering the cabinet, all
modules and any Powered Devices connected to any ES8GP switch in the cabinet. Refer to
2.4.4.2 for details.
LEDs
The PSU has six LEDs on the front panel to display the status of PSU and fans in the Main
Cabinet. The function of each LED is shown in Table 5.3-1.
Table 5.3-1 PSU Status LED Functions
LED
LED FUNCTION
48Vdc
ON when -48Vdc is OK
5Vdc ON when 5Vdc is OK
ALARM
ON when -48Vdc or 5Vdc fail
FAN1 ON when FAN1 fails.
FAN2
ON when FAN2 fails.
PSU FAN ON when PSU FAN fails.
Alarm Switch
The PSU has a slide switch on the front panel. This switch activates/deactivates the local audio
alarm indication from the buzzer. If a local audio alarm indication is desired, the switch should be
in the ON (up) position. If no local audio alarm indication is desired, the Alarm switch should be in
the OFF (down) position.
RS-232 Connector
The PSU outputs status and alarm information over the RS-232 DB9 connector. Use the serial
cable provided with the cabinet to interconnect the PSU and the monitoring gateway Module. The
monitoring gateway Module is defined in the Cabinet Attributes Web Admin page. When a back-
up PSU is installed, the serial cable should be connected to the back-up PSU and the monitoring
gateway Module; do not connect the serial cable to the main PSU in slot 10. Note that when
employing a WTIM as the notifying gateway Module, Dipswitch 3 of the WTIM, the Serial Mode
switch, must be set to OFF, the Main CPU Serial mode.
Power Switch and AC Power Input
The PSU has a fused AC Power Input and switch that turns AC power to the PSU ON and OFF.
The T6.3A L250V fuse is installed in the fuse holder below the AC input connector. Should the
fuse fail replace only with a T6.3 A L250V fuse.