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Verfügbare Sprachen
Verfügbare Sprachen
3. OPERATION AND FUNCTION OF THE CONTROLLER
EXTERNAL LOAD
This function is used for switching an additional external load (e.g. immersion heater, heat pump),
if enough power for its operation is available.
Opt. functions / Add new function / Load ext.
Adjustment
Description
channel
tMin on
Minimum switch-on time
tMin off
Minimum switch-off time 10 ... 1800 s
Power
Power external load
Tolerance
Power tolerance
Monitoring
Monitoring period
Funct.
Activation / Deactivation
In normal operation, the control unit operates in modulating mode. If the power consumption of
the control unit (at maximum power + excess) exceeds the power consumption of the external
load, the external load switches on. The parameter Power can be used for adjusting the power
consumption of the load. An adjustable tolerance can additionally be added.
Switch-on condition of the external load in normal operation:
Power of control unit + excess > power + power x tolerance
The switch-on condition has to be fulfilled for the adjusted monitoring period. The external load
is switched on for the adjustable minimum switch-on time. After switching off, the external load
remains switched off for the adjustable minimum switch-off time. The external load switches off,
if the excess falls below 0 during the monitoring period.
The external load is switched via relay 3 by means of an auxiliary relay, see page 10.
NOTE
This function is only available, if the variant Sensor module has been selected in the
Variant menu.
EXTERNAL LOAD 2
If the external load function has been activated, it is offered a second time (Load ext. 2). This func-
tion works like External load and is used for switching higher power values. External load 2
has priority over the control unit and the external load.
Opt. functions / Add new function / Load ext. 2
Adjustment
Description
channel
tMin on
Minimum switch-on time 10 ... 1800 s
tMin off
Minimum switch-off time 10 ... 1800 s
Power
Power external load
Tolerance
Power tolerance
Monitoring
Monitoring period
Funct.
Activation / Deactivation Activated, Deactivated
Switch-on condition of the external load 2 in normal operation:
Power of control unit + power of external load + excess > power + power x tolerance
The external load 2 is switched via relay 2 by means of an auxiliary relay, see page 51.
HINWEIS
This function is only available, if the variant Sensor module has been selected in the
Variant menu and if the external backup heating is not activated.
Adjustment range / se-
lection
10 ... 1800 s
0 ... 9999 W
0 ... 100 %
10 ... 600 s
Activated, Deactivated
Adjustment range / selection Factory setting
0 ... 9999 W
0 ... 100 %
10 ... 600 s
71
Factory setting
10 s
10 s
3000 W
2 %
30 s
Activated
10 s
10 s
6000 W
2 %
30 s
Activated
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