Salco 781-ZBA SERIES

Available in multiples of eight zones from 8 to 64 zones.

FEATURES

Piezo Driver Output
Can drive three sound alert piezo audibles with the following two options:
1. When a loop is violated, the piezo sound device latches. Depressing the RESET switch resets the piezo sound device even if the loop remains violated thus allowing for subsequent loop violations to generate a sound alert.
2. The piezo sound device follows the loop.
 Optional:  Retriggerable audible control model 716 enables audible to sound on a loop violation and on a loop restoral.


Remote Bypassing
Manual push-button switch per zone.
Flashing LED's when zones are bypassed.
Supervised bypassing, i.e., alarm upon bypassing and unbypassing when control is armed.
Option enables no alarm on bypass and unbypass.
Keylock Shunt Interlock available on 770-LT standard remote.


Protective Loops
Used on closed or open circuit loops.
Loop hesitation per zone - 1/2 second.
Programmable instant response 20 milliseconds.
Built-in pulse stretcher per zone.
 Optional: End-of-line resistor loop accessory model 705 available


Memory.
Automatically goes into memory mode when associated control instrument is armed and remains in the memory mode when disarmed. RL terminals on the processor board are used for this function.
AR-FR switch accommodates reset push-button for Auto/Reset mode during day use. Also accommodates push-button for memory mode reset during day use.
LED Driver Outputs
Drive a maximum of three standard LED remote stations in parallel.


 

DESCRIPTION

The  door annunciator with remote bypass system is wired directly to doors employing either normally open or normally closed door contacts. The output of the processor board is wired directly to the remote display and bypass panel.  The system provides a relay contact per door zone. When a door opens a relay contact closes which can be used to supply low voltage to a siren driver located at each door site. Therefore, only the siren at a door which opens will sound. When the door closes the sound will stop. A separate power supply must be used to power the door sirens.

The remote display and bypass panel comprises LED lamps and push-button switches, a piezo sounder, a bypass inhibit keyswitch and a reset lamp and reset push-button switch, all mounted on a stainless steel plate. Each lamp represents one door and displays the status of that door. When a door is open and remains open the lamp for that door illuminates and remains illuminated. When a door closes the lamp for that door extinguishes and remains extinguished as long as the door is closed. Each lamp is also a push-button switch for the bypass function. When a push-button is depressed, the lamp for that door constantly flashes indicating that door is out of service. The keyswitch on the panel is used to inhibit the bypass mode to prohibit unauthorized personnel from bypassing any of the doors. The audible piezo sounds when a door opens and remains sounding until the door is closed. A mode is possible where when a door opens and closes again, the lamp remains illuminated and the audible piezo remains sounding until both are manually reset by attending personnel at the door site. When reset, the audible stops sounding and the lamp indicates the true status of the door.