Alarm - Danfoss ECL Comfort 296 Operating Manual

Operating Guide ECL Comfort 210/296/310, application A230

5.13 Alarm

The section "Alarm" describes specific application related issues.
Application A230 offers two types of alarms:
Type: Description:
1
A230.1 and A230.4
Actual flow temperature differs from the desired
flow temperature
1 A230.4
Actual pressure is outside the set pressure range
2
Disconnection or short-circuiting of a temperature
sensor or its connection
The alarm functions activate the alarm bell symbol.
The alarm functions activate A1 (Relay 4).
The alarm relay can activate a lamp, a horn, an input to an alarm
transmitting device etc.
The alarm symbol / relay is activated:
• (type 1) as long as the alarm reason is present (automatic reset).
• (type 2) even if the alarm reason disappears again (manual
reset).
Alarm type 1:
If the flow temperature deviates more than the set differences from
the desired flow temperature, the alarm symbol / relay will be
activated.
If the flow temperature becomes acceptable, the alarm symbol /
relay will be de-activated.
If the pressure S8 gets higher than a set value (bar) or gets lower
than another value (bar), the alarm symbol / relay will be activated.
If the pressure becomes acceptable, the alarm symbol / relay will
be de-activated.
Alarm type 2:
Selected temperature sensors can be monitored.
Should the connection to the temperature sensor be disconnected,
short-circuited or the sensor gets defective, the alarm symbol
/ relay will be activated. In the "Raw input overview" (MENU >
Common controller settings > System > Raw input overview) the
sensor in question is marked and the alarm can be reset.
When an alarm is activated, the bell-symbol appears in the right
favorite display.
VI.LG.H4.02
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