ABB ARC093AV1 HiEE300690R1 UNITROL drive cabinet unit
Several Solutions
• Ratings from 6 to 450 A
• Integrated, separate or external
• 2-phase or 3-phase versions
• Digital control
• Auto/manual tuning
In the DCV 700, an autotransformer is included to
reduce voltage ripple in the field circuit by adapting
the AC voltage to a suitable level.
The field exciters are controlled via a serial link with
a speed of 62.5 kBaud for fast and accurate control.
Fig. 3 shows the connections of the field exciter.
Diode Field Exciter
2-phase, integrated in the converter module, 6 A
The diode field exciter is a diode bridge rated up to
6 A with internal minimum field supervision, without
any need for adjustment.
Digital Controlled Field Exciters
2-phase, 1-quadrant, integrated in the converter
module, 16 A
(max. 6 A in converter modules up to 50 A max.
8 A in converter modules up to 75 A, max. 16 A
in converter modules 110...700 A)
Half controlled thyristor/diode bridge, microprocessor controlled with the electronics supplied from the
armature circuit converter. To achieve high resolution in current measurement, the current feedback
can be adapted to different current levels such as 3,
5, 7, 9, 11, 13, 15, 17 A.
Insulation voltage 600 V, operation voltage ≤ 500 V.
2-phase, 1-quadrant, outside the converter module, 50 A
Half controlled thyristor/diode bridge, microprocessor controlled, with separate power supply (115/230
VAC) for the control electronics. To achieve high
resolution in current measurement, the current feedback can be adapted to different current levels such
as 3, 5, 7, 9, 11, 13, 15, 17, 21, 27, 33, 39, 45, 50 A.
Insulation voltage 700 V, operation voltage ≤ 500 V
(for operating voltages higher than 500 V an adaptation via T3 autotransformer is available)

The control system provides
a flexible and simple method of
controlling different drive
configurations.
The configurations comprise the converter and its
software, Application Controller, Engineering and
Maintenance tools and different communication
links to other automation systems.
The control system includes an Application Controller (APC) and a Digital Drive Controller (DDC)
with well defined functions and interface.
The Application Controller (APC), common for
both AC and DC drives, is a single board controller with all the software and hardware facilities
needed to handle the application specific functions.
The Digital Drive Controller (DDC) is not programmable but various functions and operating
modes can be selected by a fixed number of
parameters, which are set from the APC level. The
motor control programs are located in the DDC,
which is controlled by either a torque or a speed
reference provided by the APC.
Stand-alone drive
A single drive has one Digital Drive Controller
DDC connected to the Application controller
APC.
Small drive system
In small systems, one APC is connected from 1 up
to 4 Digital Drive Controllers.
The small drive configuration can also be used in
master/slave applications.
Large drive system
Large systems are built by interconnecting application controllers through a communication bus,
for example AF100. Common control functions
can be distributed to separate nodes. Even very
complex systems can be configured by using the
same system design concept and its common
building blocks, resulting in great savings in, for
example, spare parts.