RISCO Group GT490X - Manual (Page 4)

Output Terminal Descriptions
Speaker Terminals
This pair of terminals provide connection for:-
System Speaker(s)
Optional 16/32 Ohm Panel Speaker
A speaker is supplied in each keypad. If any additional speakers are fitted they should
present a minimum impedance of 16 Ohm.
PGM 1, 2 & 3 Terminals
The PGM1 & 2 terminals are an open collector output held at 12V through an integral
1k resistor. Max current sink into PGM 1 & 2 terminals is 50mA. The terminals are
programmable for various uses if required.
Note: PGM3 terminal is the strobe- terminal and is only available as a
programmable option if the Strobe terminal is not used for the
External Sounder e.g. when NovActive sounders are used.
Max current for switch is 1A.
Power Supply Rating
GT490X Max. O/P current - 0.8A plus 0.123mA for batt. charge.
Sounders, detectors and other auxiliary items, including the control panel and
keypad(s), should be included when calculating current drawn by the system.
Any damage caused through overloading the control panel supply will not be
covered by the warranty. We recommend that additional power supplies are
used to supply detectors on long cable runs.
AUX 12V Terminals
This pair of terminals supply the + and - supply for the detectors. 1A available from
these terminals.
Strobe Terminals
This pair of terminals are the output for the Strobe. The negative terminal is switched
during an alarm period. Max current for switch is 1A.
Bell Terminals
This pair of terminals are the output for the Bell or external sounder. The negative
terminal is switched during an alarm period. Max sink current for switch is 1A.
Keypads
The + and - terminals supply power to the keypads.
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PR5846 Rev12 490X QS Eng.qxd 10/05/2012 11:38 Page 4