ECKELMANN UA 300 D, Manual

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Alarms and Messages of UA 300 D
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2007 − ECKELMANN | BERLINER STRASSE 161 | 65205 WIESBADEN | FON +49(0)611 7103-0 | FAX 49(0)611 7103-133 | eckelmann.de
Version 2.03 27. Juni 2008
Sensor break alarm
Alarm is generated after the set delay expires (Menu 6−2−3) if the controller detects breakage or short circuit on
a sensor.
Sensor break alarm is always generated for sensors vital to control functions. In the case of optional
sensors, alarm is only generated when the sensors have not been removed from monitoring by sen-
sor scan (Menu 6−1).
Hardware fault alarm
Alarm is generated without delay if the controller detects hardware problems. Malfunction of the following com-
ponents is detected:
- Temperature measurement
- General fault
- Loss of setpoint (memory problems)
- Time/date
- First start
Priority for transmitting the alarm is governed by the controller priority and type of alarm.
Alarm routes
A detected alarm state is transmitted by the UA 300 D Case Controller by the following routes:
- Alarm relay floating changeover contact)
- Local BT 300 x Operator Interface connected to display port
- CAN bus (LDS System)
Termination of alarm
The condition for termination of an alarm can be selected from two basic principles:
- Automatic reset of all alarms after correcting the cause
- Manual reset of all alarms after correcting the cause
Manual reset can be performed as follows:
- Via CAN bus interface
- By local BT 300 x Operator Interface connected to display port
- By manual shutdown input (230 V input), also while alarm is still active
- By switching off the controller, also while alarm is still active
8.2 Messages
States outside normal operating conditions but not constituting an alarm state are reported via the interfaces and
entered in the message log.
Examples of messages:
- Electric power failure
- Change of setpoint
- Manual shutdown
- Defrosting terminated by safe defrost time