Safety
Information
Product
Information
Mechanical
Installation
Electrical
Installation
Getting
Started
Menu 0
Running
the motor
Optimisation
Macros
Advanced
Parameters
Technical
Data
Diagnostics
UL Listing
Information
192
Unidrive User Guide
www.controltechniques.com Issue Number: 9
Table 11-3 Unidrive losses in ‘rdY’ state
11.1.3 AC supply requirements
Voltage:
Unidrive: 380V to 480V ±10%
Unidrive LV: 200V to 240V ±10%
No. of phases: 3
Maximum supply imbalance:
2% negative phase sequence (equivalent to 3% voltage imbalance
between phases)
Frequency range: 48 to 62 Hz
Unidrive Size 5 Heatsink fan
Voltage: 115V or 230V ±10% single-phase AC
Frequency range: 48 to 62 Hz
Current:
Fan supply fuse or circuit breaker rating: 2A
11.1.4 Line reactors
Line reactors reduce the risk of damage to the drive resulting from
severe disturbances on the supply network caused by, for example:
•
Power factor correction equipment connected close to the drive.
•
Large DC drives having no or ineffective line reactors connected to
the supply.
•
Direct-on-line started motor(s) that are connected to the supply and
when any of these motors are started, a dip is produced in excess
of 20% of the actual supply voltage.
Such disturbances may cause excessive peak currents flow in the input
power circuit of the drive. This may cause nuisance tripping, or in
extreme cases, failure of the drive.
When one of the following model sizes:
UNI1201 UNI1401 UNI1202 UNI1402
UNI1203 UNI1403 UNI1204 UNI1404
are used on an AC supply where one of the conditions described above
is in existence,
OR
the supply is 175kVA or larger, it is recommended
that a line reactor of 2% reactance is included between the AC supply
and the drive. Model sizes 1205 & 1405, and larger have an internal DC
bus choke so do not require AC line reactors except for cases of
extreme supply conditions.
For three-phase drives, three individual reactors, or a single three-phase
reactor should be used. Each drive must have its own reactor(s).
Current ratings
The current rating of the line reactors should be as follows:
Continuous current rating:
Not less than the continuous current rating of the drive
Repetitive peak current rating:
Not less than
twice
the continuous current of the drive.
11.1.5 Motor requirements
No. of phases: 3
Maximum voltage:
Unidrive: 480V
Unidrive LV: 240V
11.1.6 Temperature, humidity and cooling method
Ambient temperature range:
0
o
C to 50
o
C (32
o
F to 122
o
F). Output current de-rating must be
applied at ambient temperatures between 40
o
C (104
o
F) and 50
o
C
(122
o
F) (absolute maximum).
Minimum temperature at power-up: -10
o
C (14
o
F)
Cooling method: Forced convection
Maximum humidity: 95% non-condensing at 40
o
C (104
o
F)
11.1.7 Storage
Maximum storage time:
Unidrive sizes 1 & 2: After each 12 months, the capacitors will need
re-forming; refer to the supplier of the drive.
Unidrive sizes 3, 4 & 5: After every 4 years, the capacitors will need
re-forming; refer to the supplier of the drive.
Storage temperature range: -40
o
C to 50
o
C (-40
o
F to 122
o
F)
11.1.8 Altitude
Altitude range: 0 to 4,000m (13,200 ft), subject to the following
conditions:
1,000m to 4,000m (3,300 ft to 13,200 ft) above sea level: derate the
maximum output current from the specified figure by 1% per 100m
(330 ft)
For example at 4,000m (13,200ft) the output current of the drive would
have to be derated by 30%.
11.1.9 Ingress protection
Size 1 to 4:
Gland plate(s) not fitted: IP00
Gland plate(s) fitted; cable glands not fitted: IP10
Gland plate(s) fitted; cable-glands fitted: IP40, NEMA 1
Size 5 power and control modules: IP00
11.1.10 Starts per hour
By electronic control: unlimited
By interrupting the AC supply:
Unidrive sizes 1 and 2:
≤
20 (equally spaced)
Unidrive sizes 3 and 4:
≤
10 (equally spaced)
Unidrive size 5:
unlimited
11.1.11 Accuracy and resolution
The following data applies to the drive only; it does not include the
performance of the source of the control signals.
Open-loop frequency resolution...
Preset frequency reference: 0.1Hz
Precision frequency reference: 0.001Hz
Open-loop frequency accuracy...
Preset frequency reference: 0.03Hz or 0.01% of the reference,
whichever is the larger value
Precision frequency reference: 0.0001Hz or 0.01% of the reference,
whichever is the larger value
Closed-loop speed resolution
Unidrive and Unidrive LFT only
...
Preset speed reference: 1rpm
Precision speed reference: 0.01rpm
Analog input 1: 0 rpm *
* The speed-loop algorithm ensures that the steady-state speed can
change by infinitely small amounts in response to changes in the
reference from these inputs.
Closed-loop speed accuracy
Unidrive and Unidrive LFT only
...
Preset or precision speed reference: 0.00016 rpm or 0.01% of the
reference, whichever is the larger value.
Unidrive model size
Losses in rdY state (W)
1
50
2
50
3
75
4
100
5
30 (control module)
700 (power module)
AC supply voltage
AC supply frequency
Fan current
115V
50Hz
1.02A
60Hz
1.36A
230V
50Hz
0.51A
60Hz
0.68A
Summary of Contents for Unidrive 1 Series
Page 208: ......
