F
Operating instructions
cod. 1592001330
1592001330 XC642C GB r1.0 07.06.2004.doc
rel. 1.0
Pa. 18 / 21
Actions
Every time one input is activated the corresponding output is turned off.
Recovery
Recovery depends on
ALMr
parameter:
With
ALMr
=
no
The instrument restart the standard operating mode when the input is disabled.
With
ALMr
=
yES
manual recover for the alarms of compressors and fans. Push the
DOWN
key for 3s.
20.1.4
P1: probe failure alarm
It is generated by failure in the probe P1 or P2.
If both compressors and fans are managed by the instrument
SPr
:
number of steps engaged with faulty probe
. (0÷# oAi = cPr or StP) It’s used only if CtyP=StP.
FPr
:
Number of fans engaged with faulty probe
. (0÷# oAi = FAn)
If the second probe is used for dynamic set point
The function is disabled and only the standard set point is used.
If the second probe is used for analog output
The function is disabled, the value of the analog output is set in the SAo parameter.
Recovery
Automatic as soon as probe restarts working.
20.1.5
HA, LA High and low pressure (temperature) alarms
This alarm signals that the pressure (temperature) is out of limits established by parameters LAL and HAL for
compressors and LAF –HAF for fans.
The
tAo
and
AFd
parameters set the delay between alarm condition and alarm signalling.
Action
The alarm is signalled with standard action. The outputs are unchanged
20.2 ALARM MUTING
Press any buttons to silence the buzzer during an alarm condition.
Hold pressed for more than 3 seconds switch off the alarm relay during an alarm condition
20.3 ALARM CONDITIONS – SUMMARY TABLE
Code
Description
Cause
Action
Reset
A12
Alarm of
Instrument
configuration
Error in configuration
parameters
Every outputs are blocked
View the previous paragraph
E0L
Low pressure-
switch alarm
Low pressure switch
input enabled
All compressors are
turned off. Fans
unchanged.
Automatically
(if the number of activation are less than
PEn in the PEi time) when the input is disable.
-
The compressors restarts working according to
the working algorithm.
Manually
(if PEn activation happened in the PEi time)
When the input is disable:
a.
hold pressed the
Restart
(DOWN)key for 3s or
b.
turn off and on the instrument..
-
The compressors restarts working according to
the working algorithm.
