ABB ACS880+N5350 User Manual page 90

Cooling tower drives
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The CTDD will automatically set limits according to
motor data entered. For most CTDD applications,
the default values are acceptable. However, values
are adjustable within Limits:
Minimum Speed ≥ 10% Motor Speed
Maximum Speed ≤ Motor Speed
Minimum Torque set to -30% (adjustable)
Maximum Torque set to 110% (adjustable)
Use the
adjusted. Press
highlighted or
acceptable.
Naming the Drive
The default drive name is CTDD. Use
drive name or
Select Operating Mode
Operating modes are sets of default wire and
parameters suitable for most CTDD applications.
The active operating mode is displayed, (2-wire)
default. If this is correct, press
the operating mode press
Caution: Ensure drive is stopped and in Local before
changing mode. Drive could unexpectedly start
when changing mode.
3AXD50000011888
Table 12-2 Drive Assistant
Drive Limit Settings
to highlight the ramp rate to be
to enter the edit screen once
(next) if the default value is
to edit the
(next) to continue.
Selecting Operating Mode
(next). To edit
.
Local
CTDD
Limits
CT Minimum Speed
Maximum speed
Minimum torque
Maximum torque
Acceleration time 1
Back
00:00
Local
CTDD
Limits
Maximum torque
Acceleration time 1
Deceleration time 1
Acceleration time 2
Deceleration time 2
Back
00:00
Local
CTDD
Naming the drive
The name will show at the top of the
panel screen, making it easier to see
which motor this drive controls.
Drive name
Back
00:00
Local
CTDD
Select Operating Mode
Select mode below.
Operating Mode
Back
00:00
Startup Assistant & Parameters 12-11
50.0 rpm
50.00 rpm
500.00 rpm
-30.0 %
110.0 %
Next
50.0 rpm
110.0 %
100.000 s
100.000 s
100.000 s
100.000 s
Next
50.0 rpm
CTDD
Next
50.0 rpm
2-Wire
Next

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