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Building Technologies Division User Manual LMS14... CC1U7471en
6 The settings in detail 07.05.2014
6.5.27 Pulse lock
With 3-position actuators, relays Mixing valve opening and Mixing valve closing are no
longer energized if it can be reliably assumed that the actuator is already fully open or
fully closed.
The relay’s output is suppressed if the controller has driven the actuator in the same
control direction for at least 5 times the actuator’s running time.
To prevent the actuator from assuming incorrect positions because there are no relay
output signals, the actuator receives drive signals for one minute at 10-minute intervals
(opening and closing).
Note!
This function cannot be deactivated.
6.5.28 Flow temperature alarm
This function can be used to maintain the required flow temperature in mixing heating
circuits. The required flow temperature is considered reached when the deviation from
the setpoint is less than 1 K. If the flow temperature deviates constantly from the
required level for a period exceeding the set time, an error message is delivered. If,
during an active alarm, the setpoint is maintained again, the error message disappears.
Alarm flow temperature heating circuit 1
Alarm flow temperature heating circuit 2
Alarm flow temperature heating circuit 3
Note!
If the flow temperature setpoint is reduced by more than 4 K, monitoring is
deactivated until the flow temperature has dropped to the new setpoint.
This function is only available in connection with mixing heating circuits.
The function is automatically deactivated when, due to an ECO function or quick
setback, the heating circuit pump is switched off.
The function can be deactivated.
Line no. Operating line
6740 Flow temp 1 alarm
6741 Flow temp 2 alarm
6742 Flow temp 3 alarm
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