Rockwell Automation 1756-DMF30 ControlLogix Drive Module - Manual (Page 342)

Publication 1756-UM522B-EN-P - February 2003
C-90 1756-DMF30 Specific Information
2151 3Ph Resistance
Enter the continuous-conduction resistance of the three-phase
field, in ohms. Units:
Default:
Min:
Max:
Type:
File:
Group: Ohms
0
0
327.67
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
2152 3Ph TimeConstant
Enter the electric time constant (Te) of the motor or generator
field, in mS x 10, (e.g., a value of 100 indicates a time constant
of 10 mS). This is the ratio of field inductance to field
resistance. If this value is not specified by the motor
manufacturer, use the following formula: parameter 2152 [3Ph
TimeConstant] = 10,000 x L / R; where L is the armature
inductance in henries, and R is the hot armature resistance in
ohms. The ID test will provide a value that takes into account
the entire circuit (motor and motor leads), which may be
different from a value from the motor manufacturer or the
calculation. Units:
Default:
Min:
Max:
Type:
File:
Group: mSec
0
0
5000
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
2154 FML Crossovr Frq
Enter a value to determine the response of the field regulation
loop. Higher values improve response. However, higher
values may degrade stability. Units:
Default:
Min:
Max:
Type:
File:
Group: R/S
15
0
75
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
2155 Field Resistance
Enter the resistance of the field, in ohms. Units:
Default:
Min:
Max:
Type:
File:
Group: Ohms
0
0
3276.7
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
2156 Fld TimeConstant
Enter the electric time constant (Tf) of the field, in S x 1,000,
(e.g., a value of 100 indicates a time constant of 0.1S). This is
the ratio of field inductance to field resistance. If this value is
not specified by the motor manufacturer, use the following
formula: parameter 2156 [Fld TimeConstant] = 10 x L / R;
where L is the field inductance in henries, and R is the field
resistance in ohms. The ID test will provide a value that takes
into account the entire circuit (motor and motor leads), which
may be different from a value from the motor manufacturer or
the calculation. Units:
Default:
Min:
Max:
Type:
File:
Group: mSec
0
0
32767
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
2157 SCR Diag Gain
Determines how fast error builds up in the Open SCR
diagnostics. Increase the value if warnings need to be
annunciated quickly. A value of 100 (the default) means the
gain is 1 (100/100). A value of 500 (the maximum) means the
gain is 5 time the error (500/100). Default:
Min:
Max:
Type:
File:
Group: 100
1
500
Linkable, Read-Write, 16-Bit Integer
DPS/PMI
Regulator Config
No. Name
Description Values