Detailed Description of the Parameters
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CTW900 | 77
It must be set with a value around 30 % of the Field Rated Current (P0404) so as to keep the field winding warm
even with the motor stopped.
NOTE!
Is not possible adjust the value of parameter P0178 over the configured value on the parameter
P0177 (Minimum Field Current).
EMF Regulator [103]
P0179 – Field Weakening Point
Adjustable Range:
75 to 110 %
Factory Setting:
100 %
Properties:
CFG1
Groups of
01 PARAMETER GROUPS
Access via HMI:
26 REGULATORS
........
103 EMF Regulator
........
Description:
It defines the point at which the reduction of the motor field current will start, expressed in percentage of the
armature rated current (P0400).
This setting is relevant for motors that operate in the field weakening area, which allows reaching speeds above
the rated speed (P0402).
NOTE!
For P0202 = 0 (Feedback by EMF) or P0299 = 1 (Torque Control), it is not possible to operate in
the field weakening area.
P0185 – Gain of the Armature Voltage Signal (Ua)
Adjustable Range:
0.001 to 2.500
Factory Setting:
1.000
Properties:
Groups of
01 PARAMETER GROUPS
Access via HMI:
26 REGULATORS
........
103 EMF Regulator
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Description:
It defines a multiplier to be applied to the Armature Voltage signal (Ua), and which allows correcting the speed
value of the motor when it runs in the no load condition and the feedback is done by the EMF (P0202 = 0).
For the proper setting of this parameter, follow the procedure described in section 6.3.1.
P0186 – Proportional Gain of the EMF Regulator
Adjustable Range:
0.00 to 9.99
Factory Setting:
2.50
P0187 – Integral Gain of the EMF Regulator
Adjustable Range:
0.00 to 6.00
Factory Setting:
0.03
Properties:
Groups of
01 PARAMETER GROUPS
Access via HMI:
26 REGULATORS
........
103 EMF Regulator
........
Description:
Gains of the EMF regulator, responsible for the dynamic response of the EMF loop.
