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Safety
Product
Introduction
Information
Information
configuration
Figure 4-7 Layout for two Unidrive SPMD slave modules with a dual SPMC rectifier operating on a 3-phase AC supply with a remote
mounted control master pod
Fuses*
L3
L2
L1
Slave
U
V W
Unidrive SPM User Guide
Issue Number: 3
System
Mechanical
Electrical
Getting
Installation
Installation
Started
INLX1X
Line reactor**
+DC -DC
Slave
Rectifier
to inverter
control
wiring
U
V W
OTLXXX
Sharing
chokes
www.controltechniques.com
Basic
Running
SMARTCARD
Optimization
parameters
the motor
Fuses***
24Vdc****
Master/
slave
interface
lead
Fuses***
24Vdc****
OTLXXX
Sharing
chokes
Onboard
Advanced
Technical
operation
PLC
parameters
Data
*Refer to Table 6-16, Table 6-17 on
page 74 and Table 6-18 on page 75 for
technical data and part numbers.
**Refer to Table 6-2, Table 6-3, Table 6-4
and Table 6-5 on page 68 for technical
data and part numbers.
***Fuses are needed only if the power
supply has a current rating of more than
10A.
****Refer to section 14.1.3 Supply
requirements on page 267 for supply
requirements.
Current sharing between drives
whose motor outputs are
connected in parallel
When used from a 3 phase supply, it is
preferable not to link the DC bus because
the impedance between DC and each
inverter output is just the impedance of
the output chokes. Also, on the input side,
input current sharing is determined only
by making the temperature of the two
rectifiers similar and by ensuring that both
rectifiers see the same impedance to the
line power supply.
To use the remote mounted control
master pod, all modules in the system
must be slaves. This acts as a master
control unit and connects to the system as
shown.
The remote mounted control master pod
allows the user to place all control circuitry
in one low voltage cabinet and permits up
to a maximum of 10 Unidrive SPMD
modules to be connected in parallel.
UL Listing
Diagnostics
Information
31
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