DYCU-3 Dynameco Extinguisher Control Unit
DOC: GLT.MAN-136
5
ISSUE: 1
DATE: 3/9/2009
AUTHOR: NRPJ
OPERATION.
The DYCU-3 can be triggered in one of 2 ways:-
MANUAL TRIGGERING (CALL CONNECTION)
If a normally open connection to the CALL input closes (EG call point pressed), the unit
will wait for about half a second to verify the signal.
It will then operate it`s INTERNAL BUZZER.
It will then operate it`s ALARM output. This can be used to drive a local sounder, or to
signal to monitoring equipment.
It will then operate Canister OUTPUT 1. (this will operate the Dynameco canister
connected to this output).
After about 0.5 second, it will turn off this output, and then turn on OUTPUT 2. (to
trigger a second canister)
After about 0.5 second, it will turn off OUTPUT 2, and then turn on OUTPUT 3. (to
trigger a third canister).
After another 0.5 second, the unit will turn off OUTPUT 3. It will continue with it`s
internal buzzer operating, and its alarm output operating, until the Triggering signal is
reset.
AUTOMATIC TRIGGERING (REMOTE CONNECTION)
For the automatic triggering, there is an option to delay the output signals by 10 seconds.
This gives an opportunity to investigate the cause of the alarm and HOLD the system if
necessary. This is done by setting jumper 1.
With the jumper OFF there will be no delay, and the operation sequence will be exactly
the same as for manual triggering
With the jumper ON there will be a 10 second delay between the unit operating it`s
ALARM, and operating canister output 1. The unit then follows the same sequence.
HOLD
The unit has a hold input. This is used to inhibit the extinguishing outputs from operating.
It stops both Automatic & manual Triggering.
