Overload Protection; Starting Characteristics - Viessmann Vitocal 300-G Pro SPS Installation And Service Instructions For Contractors

Installation sequence
Power supply
(cont.)

Overload protection

If the tolerance range of the electronic soft starter is
exceeded, the soft starter will automatically separate
the appliance from the mains.
Remove the cause if the relay has responded. The
relay does not need to be reset.
Explanation of the LED indicators (number of flashes)
L1 L2
HOLD TO TEST
PUSH TO RESET
SMC-3
OVLD SETTING
LED STATUS
RUN/FAULT
ON RUN/ON
1 OLVD
2 TEMP
3 PHASE REVERSAL
4 PHASE LOSS/OPEN LOAD
5 PHASE IMBALANCE
6 SHORTED SCR
7 TEST
A1 A2 IN1 IN2 97 98 13 14
T1 T2
Fig.25
1 Overload
2 Excess temperature
3 Phase reversal
4 Phase loss / motor not connected
40
L3
T3

Starting characteristics

The starting characteristics are set at the DIP switches
behind the transparent protective flap of the electronic
soft starter. At the factory, the DIP switches are set to
suit the respective heat pump type.
Prior to commissioning, compare the DIP switch set-
tings with the details in the separate "Connection and
wiring diagram", and adjust if necessary.
5 Phase asymmetry
6 Short-circuited Thyristor
7 Test