
Single zone AOV User Manual
PRODUCT OVERVIEW
16
Approved Document Ref: UI-SZAOV-01 Issue 2.01
Circuit Description/Function
TPCA34
– SZAOV Master Card
PSU (- - + +)
Monitored 28VDC input from power supply module. Diode protected for reversal and
independent short circuit. Maximum input current, 5 Amps. Input voltage 22 to 32VDC.
DETECTOR (- +)
Conventional / Twin Wire fire alarm zone circuit input (latching by default). Monitored via a
6K8 end of line resistor. Monitoring current limit is 50mA, fused at 500mA. Up to 20
detectors may be used on this circuit. These may use schottky diode bases for detector
removal monitoring, ensuring that if a detector is removed, other devices on the cable are
still functional.
The circuit can be used in ‘Twin Wire’ mode by selection of DIL switch 4 on the main PCB.
This allows use of 24v alarm sounders in reverse polarity on this circuit. Note: In this mode
the detectors req
uire special ‘Sav-Wire’ bases.
An alarm on the detector circuit will activate the vent outputs, in the same way as activation
inputs from the Fireman switch, local vent control switches, or other activation inputs.
Some programming options are available for this circuit, please refer to the programming
and set up section.
OPEN (- +) | CLOSE (- +)
Fused motor drive inputs from an external fire or SZAOV panel, not normally powered (non-
latching by default). Used to force the vent either open or closed, depending on its current
condition, when the external panel goes into an alarm condition.
Alarm activating input; 2K7 alarm, 6K8 Ohm, 5% 0.25W, EOL resistor. Monitoring current
limit 14mA, unfused.
MANUAL (CL COM OP)
Control inputs for manual operation of the vent by a local 3-way control switch. Moves the
vent by 10% increments when activated for less than 3 seconds, otherwise the vent is fully
operated.
•
CL
– Close vent
•
COM - Common reference
•
OP
– Open vent
These inputs can be configured to also operate as a thermostatic control of the vent.
Replace the 2K7 resistor in the diagram above with a 10K resistor and the vent will open or
close to a pre-configurable position.
Содержание SZAOV
Страница 45: ...www haes tech com ...