Model PAD-5
1
Wiring and Configuring the PAD-5-MB
21
Siemens Industry, Inc.
A6V101030358_en--_c
Smart Infrastructure
3.2.1.2
X101 Battery terminal
A cable harness is required to connect batteries to the PAD-5-MB. The battery
connector end that goes on the PAD-5-MB at X101 can only be inserted one way
because it is keyed.
Battery connections are to be completed only after the whole system has been
configured through jumpers and boards, and after AC has been applied.
Pin Designation
Description
1
BAT (+)
DC 24 V feed for battery (RED WIRE)
2
BAT (-)
Return (Ground) feed for battery (BLUE WIRE)
Admissible cable cross-section: 1 x
12…18 AWG or 2 x 16…18 AWG
The hardware required to connect the batteries to the main board is in the battery
kit.
The PAD-5 has an integrated intelligent charger, which displays the state of the
battery charger by the state of two LEDs, H500 and H501. The following chart
explains their function:
H500
H501
Mode
OFF
GREEN
Float
RED
OFF
Absorption Mode
GREEN
RED
Bulk Mode
OFF
OFF
Not charging, Battery Fault, AC
fail/Brownout, or Battery Charger Fault
Normally when the battery is fully charged, only the H500 GREEN led should be
on. The only time both LEDs should be off is when the PAD-5 is operating on batter-
ies, due to an AC fault or brownout, or the NAC outputs are activated because of an
ALARM. If the LEDs are out when on AC, refer to the Operator Interface (OI) for
more diagnostic information from the displayed event messages.
Remember that the low battery cut-off and high temperature charger disable are not
configurable or able to be disabled. They are there to keep the batteries in a safe
operating zone. The PAD-5-MB will cease operating when the batteries fall below
19.3V while in AC loss or brownout. When AC is restored, the panel should recover
and start charging the batteries again.
Also, if the temperature limit of the PAD-5-MB is exceeded, the battery charger will
turn off to keep the batteries safe. As soon as the temperature falls below the
threshold, the batteries will continue to charge. The OI will post a trouble, and when
the temperature is safe, the OI will post the
“OUT”.
