60
Unidrive M Modular Installation Guide
Issue Number: 2
6.2.4 Additional input inductance calculation
To calculate the additional inductance required (at
Y
%), use the following equation:
Where:
I
= drive rated input current (A)
L
= inductance (H)
f
= supply frequency (Hz)
V
= voltage between lines
6.3 Output sharing choke specification
In order to achieve the best possible current sharing between paralleled Unidrive M modules, sharing chokes must be installed between the motor
output connections and the drive’s motor connections.
Table 6-4 400 V output sharing choke ratings
Table 6-5 600 V output sharing choke ratings
6.3.1 Dual output sharing chokes
Table 6-6 400 V dual output sharing choke ratings
Table 6-7 600 V dual output sharing choke ratings
Model
Current
A
Inductance
μ
H
Width
(W)
mm
Depth
(D)
mm
Height
(H)
mm
Weight
kg
Max ambient
temp
°C
Min
airflow
m/s
Drive size
Part No.
OTL401
221
40.1
240
220
210
20
50
1
09402000
4401-0197
OTL402
267
34
242
220
205
20
50
1
09402240
4401-0198
OTL403
313
28.5
242
220
205
25
50
1
10402700
4401-0199
OTL404
378
23.9
242
220
205
25
50
1
10403200
4401-0200
Model
Current
A
Inductance
μ
H
Width
(W)
mm
Depth
(D)
mm
Height
(H)
mm
Weight
kg
Max ambient
temp
°C
Min
airflow
m/s
Drive size
Part No.
OTL601
135
103.9
242
170
203
20
50
1
09501040
09601040
4401-0201
OTL602
156
81.8
242
170
203
20
50
1
09501310
09601310
4401-0202
OTL603
181
70.1
242
200
203
20
50
1
10501520
10601500
4401-0203
OTL604
207
59.2
242
200
203
20
50
1
10501900
10601780
4401-0204
The OTLX1X parallel output sharing chokes can only be used when two Unidrive M Modular drives are paralleled together. For all other
combinations the OTLX0X output sharing choke must be used.
Model
Current
A
Inductance
μ
H
Width
(W)
mm
Depth
(D)
mm
Height
(H)
mm
Weight
kg
Max ambient
temp
°C
Min
airflow
m/s
Part No.
OTL411
390
42.8
300
150
160
8
50
1
4401-0188
OTL412
470
36.7
300
150
160
8
50
1
4401-0189
OTL413
551
31.1
300
150
160
8
50
1
4401-0192
OTL414
665
26.6
300
150
160
9
50
1
4401-0186
Model
Current
A
Inductance
μ
H
Width
(W)
mm
Depth
(D)
mm
Height
(H)
mm
Weight
kg
Max ambient
temp
°C
Min
airflow
m/s
Part No.
OTL611
238
110.4
300
150
160
8
50
1
4401-0193
OTL612
274
88.4
300
150
160
8
50
1
4401-0194
OTL613
319
76.7
300
150
160
8
50
1
4401-0195
OTL614
365
65.7
300
150
160
8
50
1
4401-0196
L
Y
100
----------
V
3
-------
×
1
2
π
f
I
------------
×
=
CAUTION
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