InteliPro, SW version 1.4,
©
ComAp
–
April 2014
InteliPro 1.4 Comprehensive Guide - rev. 1
1-13
N
OTE
:
The fail sensor alarm is issued if the measured resistance is smaller than one half of the first (lowest)
point of the sensor curve characteristic or is greater than 112,5% of the last (greatest) point of the
sensor curve characteristic.
W
IRING OF ANALOG INPUTS
-
GROUNDED SENSORS
W
IRING OF ANALOG INPUTS
-
ISOLATED SENSORS
Tristate inputs
Analog inputs can be used also as binary or tristate, i.e. for contact sensors without or with circuit
check. The threshold level is 750Ω. In case of tristate, values lower than 10Ω and
values over 2400Ω
are evaluated as sensor failure (short or open circuit).