66/142
AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – [email protected] – www.industrietechnik.it
If the sensors used to control are faulty (open or in short circuit), the outputs are disabled,
If parameter
I72
or
I73
LVVHWWRVKRZRQWKHGLVSOD\WKHRSHUDWLQJVHWSRLQWRIDVSHFL¿F]RQHZKHQWKHRSHUDWLQJ
temperature cannot be calculated (open or short circuited sensor), the display shows “
---
” instead of the setpoint.
For sensors used as external sensors in the event of a sensor failure, if the compensated setpoint function is enabled,
the function is not blocked:
• In the event of a short circuit of the sensor, the sensor temperature is considered to be high and setpoint
I50
(for
winter compensation) or
I54
(for summer compensation) is used as the compensation setpoint.
• In the event of an open sensor, the sensor temperature is considered to be low and setpoint
I49
(for winter compensa-
tion) or
I53
(for summer compensation) is used (see paragraph
³&RQWUROZLWKFRPSHQVDWHGVHWSRLQW´SDJH
57
).
If a remote sensor is used as valve control sensor for the MASTER or SLAVE_Y controller and the limit function was
enabled, in case of limit sensor or remote sensor malfunction, the column pump, the control valve and the circulator
are stopped.
For the
AI3
sensor input used as 0...10 V input (
M12
=16 and JP1 jumper located on 0..10 V -> position “3-2”, see
paragraph
³-XPSHUFRQ¿JXUDWLRQ´SDJH
102
) in the event of a sensor alarm, display A shows the message “
L-HI
”
(> 10 V) or “
eHU
” if the internal humidity sensor is faulty and internal humidity sensor is used).
For sensor alarms, it is possible to return to the normal controller display by pressing the key
ESC
, until the display A
view changes.
If the temperature sensor displayed on display A is in alarm, if the sensor is open, after pressing key
ESC
, the following
screen is displayed;
-LL
or if the sensor is in short circuit:
-HL
.
