24
en
Installation
Displa
ys,
functions and options
Messages
Commissioning
Operation and function
The internal backup heating function is used for operating the electric heating
for backup heating with current from the mains. To do so, the power unit is switched
on. The switch-on and switch-off temperatures TOn and TOff are used as refer-
ence parameters.
If the temperature falls below the adjusted threshold TOn, the electric immersion
heater and the relay are switched on. They switch off, if the temperature exceeds
TOff.
The reference sensor can be adjusted. When the maximum temperature is exceed-
ed at S1, backup heating is interrupted. When the function is saved, the message
Use of mains current possible appears.
The message also appears when the booster is activated. In the status menu, a
Booster is offered that can be used for backup heating up to TOff outside the
time frames.
The internal backup heating is balanced seperately.
Note:
For information on timer adjustment see page 15.
Inverter
This function is used for operating the inverter at reduced power, if the excess
exceeds a threshold. The operation is specified by a switching signal.
Opt. functions / Add new function / Inverter
Adjustment
channel
Description
Adjustment range / selection Factory setting
Power
Nominal power of the inverter 0.0 … 100.0 kW
5.0 kW
Limitation
Threshold limit
0 … 100 %
70 %
Monitoring
Monitoring period
1 … 60 min
10 min
Funct.
Activation / Deactivation
Activated, Deactivated
Activated
Save func-
tion / Delete
function
Save / Delete function
-
-
The parameter Power can be used for adjusting the nominal power of the inverter.
The threshold is calculated from the adjustable limitation in relation to the power
of the inverter.
Threshold = power x limitation
If the average threshold value is continuously exceeded during the adjustable
monitoring period, the signal is switched via the digital switching output DO1. If
the value falls below the average value during the monitoring time, DO1 switches
off.
Note:
This function is only available, if the variant Sensor module has been
selected in the Variant menu.
The control unit reduces the feed-in power of the PV system into the public grid.
If the store is fully loaded (Max. temp.), the full inverter power is available for grid
feed-in. With this function this power can be limited.