Components; Motoring Drive; Regen Drive; Regen Inductor - Control Techniques Unidrive Regen Installation Manual

5

Components

The following parts are required to assemble a Unidrive Regen system:
•

Motoring drive

•

Regen drive

•

Regen inductor

• Softstart resistor
• Contactors, MCBs and overload
• Switching frequency filter (optional)
• RFI filter (optional)
• Varistors
• Fuses
N
NOTE
The Regen inductor and softstart resistor duty cycle is very arduous. Therefore, correct component selection is critical. The most sensitive aspects
are line-inductor linearity, saturation current and resistor-energy pulse rating. Only inductors and softstart resistors as specified in this Installation
Guide should be used.
5.1 Motoring drive
Unidrive in Open Loop, Closed Loop or Servo mode. Any software version.
This controls the motor by converting the DC bus voltage to a variable voltage, variable frequency supply. Power flow is between the DC bus and the
motor. There are no AC supply connections.
5.2 Regen drive
Unidrive in Regen mode. (Must be software version 2.10.04 or higher).
The Regen drive converts the AC supply to a regulated DC voltage. It also provides bi-directional power flow and sinusoidal input currents.
5.3 Regen inductor
The Regen inductor supports the difference between the PWM voltage from the Regen drive and sinusoidal voltage from the supply.
N
NOTE
Regen inductors are special parts. Under no circumstances must a part be used other than those listed in Table 5-1.
Table 5-1 3-phase Regen inductors
Rated
Drive Model
power
kW
UNI 1405 4
UNI 2401 5.5
UNI 2402 7.5
UNI 2403 11
UNI 3401 15
UNI 3402 18.5
UNI 3403 22
UNI 3404 30
UNI 3405 37
UNI 4401 45
UNI 4402 55
UNI 4403 75
UNI 4404 90
UNI 4405 110
UNI 5401 160
10
Rated
Inductance
current
A rms mH
9.5 6.3
12 5.0
16 3.75
25 2.4
34 1.76
40 1.5
46 1.3
60 1.0
70 0.78
96 0.63
124 0.48
156 0.38
180 0.33
202 0.30
300 0.24
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Number
CT
required per
part number
Regen drive
1 4401-0001
1 4401-0002
1 4401-0003
1 4401-0004
1 4401-0005
1 4401-0006
1 4401-0007
1 4401-0008
1 4401-0009
1 4401-0010
1 4401-0011
1 4401-0012
1 4401-0013
1 4401-0014
1 4401-0015
Unidrive Regen Installation Guide
Issue Number: 2