89
Factory
Standard
min.
Range
max.
P26 -
Motor Service Factor
0.80
0.01
1.50
1.00
shortest step
6.5.3 - P26 - Motor
Service Factor
It sets the Motor Service Factor (SF) according to the
motor nameplate data.
That value defines the load that the motor can drive.
Now it is known that Thermal Class 15 allows cold start and
Thermal Class 30 is the upper limit. Thus you must select a
Thermal Class between these two Thermal Classes by
considering the number of starts per hour and the time
interval between motor On-Off procedures.
With a smaller Class selected, the motor protection will
increase but, less starts per hour are allowed and longer
time intervals between motor On-Off procedures are
required.
On the other hand with a higher Class selected, the motor
might be operated closer to the limit, thus more starts per
hour are allowed and shorter time intervals between motor
On-Off procedures can be used.
If you are not sure which Thermal Class should be adopted
between these two limits, adopt the lowest Thermal Class
firstly, and only during practical tests at full load operation
select the Class that is more suitable to your requirements,
without exceeding the upper limit.
NOTE!
If several Thermal Classes can be applied, program one that
is most suitable for your application, protecting your motor
according to your duty requirements.
NOTE!
If the motor is equipped with a temperature sensor (PTC or
Thermostat) which is used for thermal protection, the
thermal class of the SSW-03 Plus can be disabled by setting
P21= Off.
6
DETAILED PARAMETER DESCRIPTION
