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AC Drives
P.O. Box 184
FI-00381 HELSINKI
FINLAND
Telephone+358 10 22 11
Fax+358 10 22 22681
Internet www.abb.com
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Safety instructions
Read the following instructions carefully before proceeding with the
installation.
Warning! Dangerous voltage!
Only a competent electrician may install ACS55.
Never work on the drive, the motor cable or the motor when main
power is applied. After switching off the input power, always wait at
least for 5 minutes to let the intermediate circuit capacitors
discharge before you start working on the drive.
Warning! If the heat sink is not earthed properly, you can get an
electric shock if you touch the heat sink.
Note: DIP switches are at a dangerous voltage.
Note: Even when the motor is stopped, dangerous voltages are
present at power circuit terminals L/R, N/S, T1/U, T2/V and T3/W.
Note: Even when the unit is powered down, there may be
dangerous external voltages connected from outside to the relay
output terminals.
Warning! Hot surfaces!
During operation, the cooling element may reach high temperature
(>80°C). Make sure to follow the installation instructions.
General safety instructions
ACS55 starts the motor automatically after a supply break if the
external start signal is on.
Altering the DIP switches will affect the function and performance
of ACS55. Check that the changes will not cause any risk to
persons or property.
About this manual
This guide provides information necessary to install and start-up
the unit.
Delivery check
The delivery includes:
1. ACS55
2. User’s guide
3. Two clamps for the control cable (EMC units
only).
Check the rating plate and ensure that the
delivered device corresponds to the order.
EMC filter: E = Built in, N = No
Max. continuous output current (I
):
2
01A4 = 1.4 A, 02A2 = 2.2 A, 04A3 = 4.3 A,
07A6 = 7.6 A, 09A8 = 9.8 A
Never attempt to repair a broken unit. ACS55 is not a field
repairable unit. Contact the supplier for replacement.
Install ACS55 in a locked or tool-openable space.
Do not connect input power to the unit more than once every three
minutes.
Serial number (S/N) is printed on the rating plate.
(Y = manufacturing year, WW = manufacturing week)
8EN
Overview of the unit
ACS55 drive controls the speed of a 3-phase AC induction motor.
Protective earth (PE), page 17
Input terminals, page 17
Power on LED, page 21
Fault LED, page 21
Analogue input signal selector
(voltage/current), page 18
DIP switches, page 14
Control potentiometers, page 16
DriveConfig kit interface, page 24
Relay output terminals, page 18
Control cable terminals, page 18
Motor cable shield, page 17
Motor cable terminals, page 17. Sliding
cover provides additional insulation. Slide
the cover left to close.
Mounting clip, pages 12 - 13
Clamp plate, page 19 (EMC units only)
EN9
Installation and start-up steps
Read Safety instructions on page 7 before proceeding.
ActionPg.
1Check the delivery.7
2Ensure that the installation environment is suitable for ACS55.10
3Mount the unit.12 -
13
4Check applicability of the standard settings: Motor nominal frequency is 50 Hz; load is a pump or a fan; maximum output
frequency is 50 Hz. If the standard settings are not suitable, adjust the DIP switches.
5Make sure the MOTOR I NOM potentiometer matches the rated current of the motor. It defines operation of the motor
thermal protection function.
6Adjust the acceleration/deceleration time potentiometer ACC/DEC if necessary.16
7Connect the power supply cable and motor cables.17
8Connect the control wires.18
9Turn the power on. Green LED is illuminated. Note: Motor rotates if the start signal is active.
10Set the speed reference and activate the start signal. The motor accelerates to the given speed reference.20
14
16
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