Setup, cont’d, P.272 — e-fld volts adj parameter – Rockwell Automation 1397 Enhanced Field Supply - 3010, 3020 User Manual
Page 10
1397 Enhanced Field Supply Card
10
1397-5.24 March, 2005
A
B
C
581
583
582
X1
X2
H1
H2
F2/35
CT
LINE
F1/37
P4
P4
P4
P.272 — E-Fld Volts Adj
Parameter
P.272 [E-Fld Volts Adj]
is used to match the drive’s rated field
voltage to different DC motor field voltages. A field voltage below the
motor’s rated value can operate the motor above rated base speed with
reduced torque. A voltage above the motor’s rated base speed however,
could also result in armature overvoltage and overheating of the
motor’s field windings.
Shown below and on the following page is the range of output motor
field voltages available using the Enhanced Field Supply Card. With
the Enhanced Field Supply Card, output voltage to the motor field is
set equal to the AC input line voltage times a line multiplier.
Where:
The Line Multiplier = The Motor Nameplate Field Voltage
AC Line Input Voltage
The following line multipliers correspond to an Enhanced Field Supply
Jumper setting of either
A-C
or
B-C
. The shaded values shown
correspond to settings for parameter
P.272 [E-Fld Volts Adj]
as explained
in the example on the following page. Jumper J21 on the drive’s
Regulator Board must then be set to match the calculated
A-C
or
B-C
range.
A-C Jumper Settings
Enhanced Field Supply Jumper Set to A-C
Drive Input Volts
Minimum Output Motor Field Volts
Maximum Output Motor Field
Volts
230/460VAC
VDC = 0.9
× VAC
VDC = 1.12
× VAC
P.272
→
↓
0
1
2
3
4
5
6
7
8
9
000
0.9003
0.9004
0.9005
0.9006
0.9009
0.9012
0.9015
0.9020
0.9025
0.9031
010
0.9037
0.9045
0.9052
0.9061
0.9070
0.9080
0.9090
0.9102
0.9113
0.9126
020
0.9139
0.9153
0.9167
0.9182
0.9198
0.9214
0.9231
0.9248
0.9267
0.9285
030
0.9305
0.9325
0.9345
0.9366
0.9388
0.9410
0.9433
0.9456
0.9480
0.9505
040
0.9530
0.9555
0.9581
0.9608
0.9635
0.9662
0.9690
0.9719
0.9748
0.9777
050
0.9807
0.9837
0.9868
0.9899
0.9931
0.9963
0.9995
1.0028
1.0061
1.0095
060
1.0129
1.0162
1.0196
1.0229
1.0262
1.0294
1.0326
1.0358
1.0389
1.0420
070
1.0450
1.0480
1.0509
1.0538
1.0567
1.0595
1.0622
1.0649
1.0676
1.0702
080
1.0727
1.0752
1.0777
1.0801
1.0824
1.0847
1.8690
1.0891
1.0912
1.0932
090
1.0952
1.0972
1.0990
1.1009
1.1026
1.1043
1.1059
1.1075
1.1090
1.1104
100
1.1118
1.1131
1.1144
1.1156
1.1167
1.1177
1.1187
1.1196
1.1205
1.1213
110
1.1220
1.1226
1.1232
1.1237
1.1242
1.1245
1.1248
1.1251
1.1253
1.1254
120
1.1252
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Setup, Cont’d