Regen Drive System Types; Single Regen, Single Motoring System; Single Regen, Multiple Motoring System - Emerson SP1201 Installation Manual

Safety Product
Introduction
Information information
2.8

Regen drive system types

2.8.1

Single Regen, single motoring system

Figure 2-2 shows a typical layout for a standard regen system consisting of a single Regen drive and single motoring drive. In this configuration the
Regen drive is supplying the motoring drive and passing the regenerative energy back to the mains supply.
NOTE
The power up connections to L1, L2, L3 of the Regen drive are only made during power-up. Once both drives are powered up, this is switched out
and the main regen supply switched in. The auxiliary on the charging circuit to the Regen drive's L1, L2, L3 connections for power up must be closed
(charging supply removed) before the Regen drive can be enabled.
Figure 2-2 Single Regen, single motoring system
L1
Additional
L2
circuitry
L3
Power up only
NOTE
For the above single Regen, single motoring configuration; the Regen drive must be of the same frame size or larger.
2.8.2

Single Regen, multiple motoring system

Figure 2-4 shows the layout for a regen system consisting of a single Regen drive with multiple motoring drives. In this configuration the Regen drive
is sized to the total power of all motoring drives.
Figure 2-3 Single Regen, multiple motoring system
L1
Additional
L2
Circuitry
L3
It is also possible to have a single Regen drive powering multiple motoring drives as shown with the power up connections also being provided via the
Regen drives L1, L2, L3 inputs and using the Regen drives own internal softstart.
In this arrangement the total capacitance of the motoring drives must not exceed the capacitance of the Regen drive, in cases where this does please
contact Technical Support.
Unidrive SP Regen Installation Guide
Issue Number: 2
System Mechanical Electrical
design installation installation
Regen
U
inductor
Regen drive
U
AC supply
V
connection
W
L1 L2 L3
Regen
Regen Drive
Inductor
U
AC Supply
V
Connection
W
L1 L2 L3
Power up only
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Getting
Optimisation Parameters
started
U
Motoring drive
Common
+DC +DC
DC bus
connections
-DC -DC
DC Bus
Motoring Drive
Connections
+DC +DC
-DC
-DC
Motoring Drive
+DC
-DC
Technical Component
data sizing
U
Motor
V
Connection
W
U
Motor
V
Connection
W
U
Motor
V
Connection
W
Diagnostics
9