OnLine Power Telecommunication - Manual (Page 18)

OnLine Power
1-3
REV A
DB9 Pin
Numbers
UPS Power-Off,
all CB’s open
condition
Normal Operating
Condition (Input
AC On, UPS On)
Failure/Alarm Condition Alarm Description
3 to 5 OPEN OPEN CLOSE, Latched (for short
circuit and overload)
Summary Alarm
7 to 5 OPEN OPEN CLOSE Low Battery
2 to 5 OPEN OPEN CLOSE (UPS battery on) On Battery
8 to 5 OPEN CLOSE OPEN (UPS OFF) UPS On (”bypass on” or
“inverter on”)
9 to 5 CLOSE OPEN CLOSE (input power-off) Input AC ON
1 to 6 OPEN for door
close
OPEN CLOSE (door open) Intrusion Door Switch
• For the detailed pin out for the DB-9 connector see Illustration 1-2 and table below.
1-2-2 Alarm Cables
The PBC-II units come with an Alarm Cable, 20 feet long, which connects to the “DB-9 jack” at the electronic tray,
below TB1, so the signals are available for external monitoring/status reporting equipment. The wiring of the cable
matches the pin out detail as shown in Illustration 1-2 for the DB-9 jack.
DB9 Pin Out Wire Color Function Contact Position
with Power OFF
1 Black of Black / Blue Door Switch, Intrusion Alarm Normally Open
2 Black of Black / Red ON BATTERY(*) Normally Open
3 Black of Black / White Summary Alarm Warning Normally Open
4 Open no wire N/A
5 Black of Black / Green Return Common Ground
6 Blue of Black / Blue Door Switch, Intrusion Switch Normally Open
7 Red of Black / Red Low Battery Normally Open
8 White of Black / White UPS “ON” / Inverter “ON” Normally Open
9 Green of Black / Green Input Failed Normally Closed
(*) NOTE: Disregard the “FLASH” label attached to the wire connected at DB9 pin #2, in the unit.
1-2-3 Intrusion Switch
An intrusion alarm switch resides within the cabinet to relay that the unwanted entrance into the cabinet has been
made. The plunger of the switch is in by the door when it’s closed. In this condition, the switch presents an open
circuit and the alarm is in the ”off” state. When the door is open, the switch presents a closed circuit with a pulled out
plunger and the alarm is in the ”on” state. One additional state is available on the switch. A technician working on the
unit can pull the plunger completely out to a ”neutral” position. The switch will be in the open state ( ”off” ) and thus
no alarm condition by-passed while he or she is working on the unit. See Illustration 1-3 for its location.