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Additional information
No. Name
Information
1
NOM
Defines the motor nominal frequency (see the motor rating plate).
FREQ Hz
2
SILENT
Defines the drive switching frequency. Note: The higher the frequency the more electromagnetic
noise and the shorter the allowed motor cable length to comply with the European EMC
regulations. See
ACS55 temperature.
3
LOAD
Optimises the output voltage and frequency characteristics according to the load. Select P&F for
the squared torque (e.g. pumps and fans) and CT for the constant torque loads (e.g. conveyors).
ACS55 automatically boosts the starting voltage 10% to compensate the motor losses and to
increase the starting torque.
4
JOG Hz
Defines the jogging frequency. Activate the jogging function on by connecting 12...24 VDC to digital input 3 ("JOG").
(Drive accelerates or decelerates to the jogging frequency, and keeps it until the input is switched off.)
5
RELAY
Selects the drive state the normally open contact of the relay output indicates. FLT = Fault. Contact is opened while
at a fault state or at a power off state. RUN = Running. Contact is closed while running.
6
AI
Activates a living zero supervision for the analogue input. 4 mA (2 V) = ACS55 trips on a fault if the value drops
OFFSET
below the limit. See section
7
AUTO-
Activates the automatic reset function for the following faults: Undervoltage, overvoltage, analogue input loss.
RESET
ON = ACS55 will try to reset automatically three seconds after a fault trip. Maximum number of resets is ten in three
minutes. If exceeded, ACS55 stops and will not attempt a new reset. See also
page 21.
Warning! If the start signal is on, the motor will be started after a reset. Make sure that this will not cause danger.
8
HI FREQ
Defines the maximum output frequency. OFF: Max. frequency = value defined by the NOM FREQ HZ switch. ON:
Max. frequency = value defined by the NOM FREQ HZ switch + value of HI FREQ potentiometer. See
potentiometers
All manuals and user guides at all-guides.com
Technical data
on page 22. Note: The switching frequency adapts to the
Speed controlling
on page 16.
on page
20
for information on analogue input scaling.
U
U
N
CT
10%
Status indications and fault tracing
Control
15
P&F
f
f
N
on
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