2000 SERIES SENSORS INSTALLATION GUIDE Revision 3.1 June 1997
2.6 INPUT / OUTPUT UNITS
GENERAL
The Aritech 2000 Series input-output modules allow for connecting an external signal (input) by
a voltage free contact for further processing in the Fire panel . These inputs are supervised and
faults can be signalled at the panel. Furthermore, relay contacts (output) can be used for
triggering devices, external to the loop.
All 2000 Series IO-modules are loop powered (no additional power supply required).
The PCB has to be put in a housing, according to environmental conditions.
Depending on the amount of supervised inputs and outputs, the following models are available:
IO2034 : 4 Inputs / 4 Outputs module
IO2032 : 2 Inputs / 2 Outputs module
IO2031 : 2 Inputs / 1 Output module
IO2014 : 4 Inputs module
INDICATORS
A yellow LED indicates a fault condition in one of the supervised inputs. The definition of this
fault condition (open, short, open or short) must be programmed at the panel. The indication
stays until the panel is reset.
ADDRESSING
The address of a Input / Output Unit is set by means of two rotary switches on the unit. Please
refer to paragraph 2.2.3 on how to set the address.
TECHNICAL DATA
Operating voltage .........................................17 -28V
Total standby current ....................................<250 µA
Typical standby current.................................<200 µA
Maximum line length .....................................not to exceed 100 m
Outputs: ........................................................2.0 Amps max. at 30 VDC
0.3 Amps max. at 125 VAC
Inputs :
Input Loop Impedance
(220K EOL included)
Reported To Panel :
Open - 330K Open (open circuit)
330K - 130K Passive (contact open)
130K - 8K Active (contact closed)
8K - short Short (short circuit)
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