6 - 13 Volt FILTERED D.C. power supply. If the power supply being used is less than 9 VDC then, R-30 must be cut out from the rear of the board. The LA-4 draws 120 m A in the standby mode and 200 m A if all alarms are activated.
Zones can be wired as either N.C. or N.O. loops. Closed loop resistance should not exceed 1000 ohms.
NORMALLY CLOSED LOOP INPUTS: The LA Annunciator is shipped with all of the input loops set up to be used as normally closed loops. To use a zone as a N.C. loop wire the LA as follows.
ZONE 1 - T2 - 1 & 2 ZONE 3 - T3 - 1 & 2
ZONE 2 - T2 - 3 & 4 ZONE 4 - T3 - 3 & 4
If a zone is not being used, then a jumper should be installed across it's input terminals or cut the open loop jumper for that zone.
NORMALLY OPEN LOOP INPUTS:
To use a zone as a N.O. loop, wire the LA as follows and cut the indicated jumper. 1
ZONE 1 - T2-1 & Tl-4 CUT J3 ZONE 3 - T3-1 & T1- 4 CUT J3
ZONE 2 - T2-3 & Tl-4 CUT J4 ZONE 4 - T3-3 & T1 -4 CUT J3
ZONE BYPASS INPUTS:
To use the zone bypass inputs, connect a N.O. switch between the indicated terminal and Tl pin 6. When the zone bypass switch is closed (bypass position) the zone will be deactivated (no alarms reported) .
ZONE 1 - T2-5 ZONE 3 - T3-5
ZONE 2 - T2-6 ZONE 4 - T3-6
Each zone provides an individual solid-state output which goes low on alarm. Each output will sink up to 100mA. To use a zone output wire between Tl-4 and the indicated I/O pin. The zone outputs follow the zone indicator.
ZONE 1 - I/O 1 ZONE 3 - I/O 3
ZONE 2 - I/O 2 ZONE 4 - I/O 4
To use the zone I/O connectors simply place a wire(22 AWG ) in the appropriate slot and push down with a small slotted screwdriver. Insure that the connector is placed on the pins with the proper wire going to the correct zone I/O.
After the installation is completed each loop on the unit should be tested to insure proper operation. Also any options that have been set such as Auto/Ack, bypass inputs or individual zone outputs should be tested for proper operation.