Safety information Introduction Product information System configuration
Mechanical
Installation
Electrical Installation
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
μH
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
μH
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
μH
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
μH
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
2πfI
------------
×=