Smart sensor communication error
Sensor board communication error
Sensor internal parameters error –
Recover after factory configuration of
sensor
Calibration error – Recover after
calibrating or replacing the sensor
Zeroing error – Recover after zeroing or
calibrating
Table A - 2 Fault Code Description
Open Loop Condition
When any of the 4-20mA channels is
not being used it should be
terminated by inserting the
specifically provided (250 ohms for
HART CH-1 and 100 ohms for
isolated CH-2) resistor between the
respective channel output terminal
and ground terminal.In case an
unused channel is not terminated
with the provided resistor, a ‘P’ will
appear at the status bit indicating
the open loop condition. Also in
case the channel output is being
used but one of the connecting
wires is damaged or disconnected,
same condition will be displayed to
let the user know about the
disconnection in the wiring. HART
communication cannot be
established with a physical
disconnection under this condition.
Figure A - 13 Sensor 1 Open Loop
Condition Display
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