VEGA VEGADIF 55 Service instructions - Manual (Page 5)

1
3
t
I
max.
min.
3.6 mA
21...23 mA
Fig. 1: Current output in case of alarm
1
Max. alarm (110 %): adjustable via the parameter SET MAX. ALARM
between 21 … 23 mA
2 Hold measured value: The last measured value is held
3 Min. alarm (-10 %): 3.6 mA
Default setting: OUTPUT FAIL MODE = Max. Alarm (110 %),
SET MAX. ALARM = 22 mA
With the parameter ALT. CURR. OUTPUT you set the current
outut value for the error message E120 "Sensor low pressure"
and E115 "Sensor gauge pressure". The following options are
available:
l
normal: The current output takes on the value which was
set via the parameters OUTPUT FAIL. MODE and SET
MAX. ALARM.
l
NAMUR
-
Decreasing of the lower sensor limit (E120 "Sensor low
pressure"): 3.6 mA
-
Exceeding of the upper sensor limit (E115 "Sensor
gauge pressure"): Current output takes on the value set
via the parameter SET MAX. ALARM.
Factory setting: ALT. CURR. OUTPUT = normal
Depending on the settings for the parameters ALARM DISPL.
TIME and ACK. ALARM MODE, the following measures must
be carried out so that a messages extinguishes:
Adjustments 1 ) Measures
l ALARM DISPL. TIME = 0 s
l ACK. ALARM MODE = off
l
Remove cause of the message. See also supplementary instructions
manual "Service instructions VEGADIF 55"
l
ALARM DISPL. TIME > 0 s
l
ACK. ALARM MODE = off
l
Remove cause of the message. See also supplementary instructions
manual "Service instructions VEGADIF 55"
l
Wait for alarm display time
1)
1)
Menu path for ALARM DISPL. TIME and ACK. ALARM MODE: GROUP
SELECTION - OPERATING MENU - DIAGNOSTICS - MESSAGES.
Confirmation of mes-
sages
Service instructions VEGADIF 55 5
Maintenance and fault rectification
31732
-
EN
-080430