GAI-Tronics 1090 Installation And User Manual - Page 11
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6.3. Optional relay outputs
Relay 2
GAI-Tronics hands-free telephones can be equipped with external relay
outputs, controlled by the telephone software. Note – these optional
connections are only available if specifically ordered, and a supplementary
power supply (see section 6.2) is required. Contact GAI-Tronics for details.
The additional outputs are provided on HD9 & HD10 as shown and are
isolated SELV outputs as defined by EN 60950-1:2001.
To comply, the installer must ensure that any connections are within SELV limits.
Relay ratings / SELV limits:
Max switching current:
6.4. Optional external inputs
GAI-Tronics hands-free telephones can be equipped with 4 external inputs,
which can be used to generate call-in events or alarm reports (using TMA).
Note – these optional connections are only available if specifically ordered.
Contact GAI-Tronics for details.
The inputs are provided on HD4 as shown, and are also labelled on the circuit
board. Control inputs are for connection to voltage free contacts only. Internal
pull-up resistor source current = 33µA. These inputs form part of a TNV3
circuit and precautions must be taken to prevent hazardous voltages being
applied to these circuits.
NB these inputs are not isolated from the telephone network.
VR & Help Point
Relay 1
- +
A
A
B
30Vdc, 42.4V peak (resistive load)
3A
B
N/C Com N/O
Common
1 2 3 4
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