Eliwell DR4000 series Handbuch Seite 28

Label Fault Cause
• measured values outside operating
Probe 1 faulty range
E1
(Regulation) • probe faulty/short-circuit/
open-circuit
• value read by probe Pb1 > HA1/2
Alarm for after time "tAO".
AH1
HIGH Pb1 (see "MAX/MIN TEMPERATURE
AH2
temperature ALARMS and parameters HA1,
HA2, LA1, LA2 and tAO)
• value read by Pb1 < LA1/2 after
Alarm for time "tAO".
AL1
LOW Pb1 (see "MAX/MIN TEMPERATURE
AL2
ALARMS and parameters HA1,
temperature
HA2, LA1, LA2 and tAO)
• Alarm trip with delay set by
parameter H14, in case of
EAL External Alarm
activation of digital input (H11=9
or H11=10).
ALARMS
Effects
• Label E1 displayed.
• Alarm icon permanently on
• Controller disabled max/min alarms
• Compressor operation on the basis of
parameters "On1/2" and "OF1/2".
• Recording of label AH1/HA2 in folder
ALAr.
• No effect on control
• Recording of label AL1/AL2 in folder
ALAr.
• No effect on control
• Recording of label EAL in folder ALAr
• Alarm icon steadily lit.
• Buzzer and/or relay activation
(if configured)
• Control trip if H11 = 10
Remedy
• check probe type (see H00)
• check probes wiring
• renew probe
• Wait for temperature value
read by Pb1 to return below
HA1/2.
• Wait for temperature value
read by Pb1 to return above
LA1/2.
• check and remove external
cause of alarm on D.I.