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Safety information
Introduction
2
Introduction
The Unidrive M / Unidrive HS modular drive offers the possibility of implementing many custom power systems with a wide range of power modules.
The power range is 110 kW to 2.8 MW and the modular design of input and output stages enables a wide range of very compact and efficient systems
to be realized. These include:
•
Parallel output stages for higher power motors:
Size 9 and 10:
Up to a maximum of 20 modules
(1 master module with up to 19 follower modules, OR
1 remote mounted control master pod controlling up to 20 followers. This allows the user to place all control circuitry in one low voltage
cabinet)
Size 11:
Up to a maximum of 10 modules
(1 master module with up to 9 follower modules OR 1 remote mounted control master pod controlling up to 10 followers).
•
Common DC bus multi-drive systems for:
Connection to larger existing power supplies
Energy sharing between motoring and regenerating drives
•
Active front end drive systems for:
Minimizing supply current harmonics
Four quadrant motor control
•
Multiple controlled rectifier bridges for:
Minimizing supply current harmonics by drawing 6, 12 or 18 pulse supply load currents.
2.1
Rectifier
A separate input line reactor (INLXXX) of at least the value shown in Table 6-2 Model and line reactor part numbers on page 93 must be
used with the rectifiers. Failure to provide sufficient reactance could damage or reduce the service life of the rectifier or inverter.
CAUTION
The Unidrive M / Unidrive HS rectifier is a half controlled SCR/thyristor bridge and is used as a front end to the size 9, size 10 or size 11 inverter
module. The rectifier cannot be used as a stand alone rectifier for several smaller drives.
Figure 2-1 Frame 10 single half controlled SCR/thyristor
L1
L2
L3
Figure 2-2 Frame 11 single half controlled SCR/thyristor
L1
L1
L2
L2
L3
L3
10
System
Product information
configuration
+DC
-DC
+DC
-DC
Mechanical
Electrical
Installation
Installation
Unidrive M / Unidrive HS Modular Installation Guide
Technical data
UL Information
Issue Number: 5
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