Memory Backup Battery; Installing Jumpers - Lenel OnGuard Hardware Installation Manual

• Or power can be supplied by a local UL 294 or UL 603 Listed power supply, or the LNL-AL400ULX or
LNL-AL600ULX-4CB6 Power Supply/Charger (12 VDC). Connect power with a minimum of 18
AWG wire at TB4-3 and TB4-4.
For UL compliance:
• The minimum conductor gauge permitted to connect between the PSE or power injector and the PD
must be 26 AWG.
• For maximum output, PoE power must be supplied by a Listed ITE or Access Control Unit (ALVY),
power limited, PoE injector (PSE) providing 44 VDC to 57 VDC and 15 W.
• This product is not intended for outside wiring as covered by Article 800 in the National Electrical
Code, NFPA 70.
• The recommended minimum performance category for cabling is Category 5e.
24.2

Memory Backup Battery

The SRAM is backed up by a rechargeable battery when input power is removed. This battery should retain
the data for about 2 weeks. If data in the SRAM is determined to be corrupt after power up, all data,
including flash memory, is considered invalid and is erased All configuration data must be redownloaded.
Notes: The initial charge of the battery may take up to 24 hours to be fully charged.
There is a danger of explosion if the battery is incorrectly replaced. Replace only with the same
or equivalent type recommended by the manufacturer. Dispose of used batteries in accordance
with the manufacturer's instructions.
24.3

Installing Jumpers

The following chart describes each jumper.
Jumpers Set at
J1 n/a
J2 n/a
J3 PoE
12V
J4 n/a
J5 n/a
J6 n/a
J7
Description
Factory use only
Factory use only
The board is powered from the Ethernet connection.
The board is powered from an external 12 VDC power
source connected to TB4-3 (VIN), TB4-4 (GND).
Factory use only
Factory use only
10Base-T/100Base-Tx Ethernet Connection (Port 0)
Cabinet Tamper: normally open switch
Hardware Installation Guide
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