Alarm - Danfoss ECL Comfort 210 Operating Manual

Operating Guide ECL Comfort 210/296/310, application A237/A337

5.11 Alarm

The section "Alarm" describes specific application related issues.
Application A237 offers different types of alarms:
Type: Description:
1
Actual flow temperature differs from the desired
flow temperature
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:
A1: Application:
Relay 4 * A237.1
A337.1, A337.2
Relay 6 *
*
Relay in the ECL controller
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 after a set delay.
If the flow temperature 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.
102 | © Danfoss | 2017.05
VI.LG.R3.02