ABB ACH550-UH User Manual page 61
Hvac drives (1...550 hp)
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ACH550-UH User's Manual
Code Description
9905 MOTOR NOM VOLT
Defines the nominal motor voltage.
• Must equal the value on the motor rating plate.
• Sets the maximum drive output voltage supplied to the motor.
• The ACH550 cannot supply the motor with a voltage greater than the
mains voltage.
9906 MOTOR NOM CURR
Defines the nominal motor current.
• Must equal the value on the motor rating plate.
• Range allowed: (0.2...2.0) · I
9907 MOTOR NOM FREQ
Defines the nominal motor frequency.
• Range: 10...500 Hz (typically 50 or 60 Hz)
• Sets the frequency at which output voltage equals the
• Field weakening point = Norm freq * Supply Volt / Mot Nom Volt
9908 MOTOR NOM SPEED
Defines the nominal motor speed.
• Must equal the value on the motor rating plate.
9909 MOTOR NOM POWER
Defines the nominal motor power.
• Must equal the value on the motor rating plate.
9910 MOTOR ID RUN
This parameter controls a self-calibration process called the
Motor ID Run. During this process, the drive operates the
motor and makes measurements in order to identify motor
characteristics and create a model used for internal
calculations. An ID Run is especially effective when:
• Operation point is near zero speed.
• Operation requires a torque range above the motor
nominal torque, over a wide speed range, and without any
measured speed feedback (i.e. without a pulse encoder).
First Start. If no Motor ID Run is performed, the drive
estimates motor characteristics when the drive is first run.
This "First Start" occurs automatically* at the next run
command after any motor parameter is changed. In order to
estimate characteristics and create a motor model, the First
Start magnetizes the motor for 10 to 15 seconds at zero
speed.
* Activating the "First Start" does require that:
• 9904 = 1 (
VECTOR
and
• 2101 = 3 (
SCALAR FLYSTART
).
BOOST
Note: If you change motor parameters after running a Motor
ID Run, repeat the Motor ID Run.
0 =
– Motor ID Run process is not running.
NO ID RUN
1 =
– Enables a Motor ID Run at the next start
ID RUN
command. After run completion, this value automatically
changes to 0.
Group 99: Start-up Data
Range
115...345 V (200 V, US)
230...690 V (400 V, US)
288...862 V (600 V, US)
0.15*I
...1.5*I
2N
(where I
is drive current).
N
N
10.0...500 Hz
50...30000 rpm
0.15...1.5*P
0, 1
:
), or 9904 = 3 (
SPEED
SCALAR
) or 5 (
+
FLYSTART
Resolution
1 V
1 V
1 V
0.1 A
2N
0.1 Hz
.
MOTOR NOM VOLT
1 rpm
0.1 Hp
N
1
To perform a Motor Id Run:
1. De-couple load from motor (or otherwise reduce
load to near zero).
2. Verify that motor operation is safe:
• The run automatically operates the motor in the
forward direction – confirm that forward rotation is
safe.
• The run automatically operates the motor at
50...80% of nominal speed – confirm that operation
at these speeds is safe.
3. Check following parameters (if changed from factory
settings):
• 2001
MINIMUM SPEED
• 2002
MAXIMUM SPEED
• 2003
MAX CURRENT
• The maximum torque (parameters 2014, 2017 and/
or 2018) > 50%.
4. At the Control Panel, select:
:
)
SPEED
• Select Parameters
• Select Group 99
TORQ
• Select Parameter 9910
Default
230 V
460 V
575 V
Output voltage
P 9905
Output
frequency
P 9907
1.5*I
2N
60 Hz (US)
Size dependent
0.2 HP (US)
0
< 0
> 80% of motor rated speed.
> 130% of I
value.
2N
61
S
Start-Up
- Quick Links:
- Parameter Descriptions
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