ECKELMANN Case Controller UA 4 E Series - No Required Sensor Alarm; Stall Detect Alarm; Implausible Opening Position Alarm; Hardware Alarm

Firmware V3.13
21.04.2021
458/466
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11.1.8 No required sensor alarm
If the controller detects that controllers indispensable for regulation are not connected (evaporator output
sensor,evaporatorinputsensorintheabsenceoft
0
from the pack controller; return air and supply air sensor
simultaneously),thenthealarmSensorBreakEEVZ1/2istriggered.
11.1.9 Stall detect alarm
EEV control stalled. This alarm is generated when the Stall Detect state occurs over a period of 3 restart
repeats x 10 minutes = 30 minutes. Alarm is generated with Prio 0.
11.1.10 Implausible opening position alarm
Check OD (opening degree) alarm is generated in occurrence of either of the following conditions:
Superheating drops below the minimum level for 30 minutes and defrosting is not due.
This generally occurs when the solenoid valve for the refrigerant is permanently open, although the
controllerwantstoshutthevalve.
100% valve opening degree is maintained for 30 minutes while temperature on sensor R5.x is greater than
thereturnairsetpoint.NoalarmtakesplaceifsensorR5.xisnotconnected,regardlessof100%opening
degreebeingmaintainedlongerthan30minutes.
Check OP alarm can be configured. Default setting is Priority 1
11.1.11 Hardware alarm
Alarm is generated without time delay if the controller detects a hardware problem. Malfunction of following
components
is detected:
Temperature measurement
t
0
not received (alarmed with Prio 0 if control can continue at least with R5.x, otherwise with priority of
controller)
General fault
Loss of setpoint (memory problem)
Time/date
First start
Priority for transmission of alarm depends on the controller priority and type of alarm.
Following a defrost the alarm delay time is extended to 60 minutes.
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Priorityofthisalarmshouldbesetto”0”inon-offcontrolmodesoastoavoidfalsealarms.
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