CHAPTER 7 - PROGRAMMING INFORMATION AND SUGGESTIONS
151
7.1.6 Starting with Torque
Control (P202=3)
1) The torque control of the Soft-Starter SSW-06 demonstrates ex-
cellent performance during motor and load starts;
2) This control is available in a form to facilitate and to adjust the
type of control to the type of load;
3) See some recommendations below on how to program and set
this type of control.
NOTES!
1) To start with torque control a load is necessary. No-load tests can
be done with voltage ramp.
2) If the torque limits are not reached during the start, the motor will
start immediately.
3) Only use the control type and/or torque control type you are able to
set. Always select the control type that is easier to set, considering
the load characteristics;
4) When heavy loads are started, always select the start by current
limit. In this way you can set the energy consumption during the
start by considering the power line capacity;
5) All motor parameters must be set according to the motor name-
plate, P400 to P406;
6) Low torque limits do not supply enough torque to start the motor;
7) Low torque limits are also very sensitive to motor temperature
changes, for instance when load is started with cold or hot motor;
8) Low torque limits are also very sensitive to load changes, for
instance, oils, greases and relief valves have different resistant
torques in relation to the motor start when they are hot or cold;
9) Always maintain motor running after it has been enabled, no matter
if it has been started cold or hot;
10) The motor manufacturer supplies the maximum torque developed
by the motor, during the starting or at rated load. The Soft-Starters
can only limit these values;
11) If errors are detected during the motor start, check all connections
of the Soft-Starter to the power line, the motor connections, the
voltage levels of the power line, the fuses, circuit-breakers and
disconnecting switches.
Torque
Control
P120
P102
Constant
Linear
Quadratic
P123
P122
P121
P122
P121
P121
P124
Constant
Linear
Quadratic
P128
P127
P126
P127
P126
P126
P402
P401
P400
P406
P405
P404
P640
P104
P125
Summary of Contents for SSW06
Page 2: ......
