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Digitax HD M75X Series Installation and Technical Guide 105
Issue Number: 5
6.1.5 Supply requirements
Table 6-13 Supply requirements
* Maximum supply imbalance: 2 % negative phase sequence (equivalent
to 3 % voltage imbalance between phases).
6.1.6 Line reactors
Input line reactors reduce the risk of damage to the drive resulting from
poor phase balance or severe disturbances on the supply network.
Where line reactors are to be used, reactance values of approximately
2 % are recommended. Higher values may be used if necessary, but
may result in a loss of drive output (reduced torque at high speed)
because of the voltage drop.
For all drive ratings, 2 % line reactors permit drives to be used with a
supply imbalance of up to 3.5 % negative phase sequence (equivalent to
5 % voltage imbalance between phases). Severe disturbances may be
caused by the following factors, for example:
• Power factor correction equipment connected close to the drive
• Large DC drives having no or inadequate line reactors connected to
the supply
• Direct-on-line started motor(s) connected to the supply such that
when any of these motors are started, the voltage dip exceeds 20 %.
Such disturbances may cause excessive peak currents to flow in the
input power circuit of the drive. This may cause nuisance tripping, or in
extreme cases, failure of the drive.
Drives of low power rating may also be susceptible to disturbance when
connected to supplies with a high rated capacity.
When required, each drive must have its own reactor(s). Three individual
reactors or a single three-phase reactor should be used.
Reactor current ratings
Continuous current:
Not less than the continuous input current rating of the drive.
Repetitive peak current:
Not less than three times the continuous input current rating of the drive.
6.1.7 Motor requirements
No. of phases: 3
Maximum voltage:
Digitax HD M75X (200 V): 240 V
Digitax HD M75X (400 V): 480 V
6.1.8 Temperature, humidity and cooling method
Ambient temperature operating range:
- 20 °C to 55 °C (- 4 °F to 131 °F).
Output current derating must be applied at ambient temperatures
>40 °C (104 °F).
Cooling method: Forced cooled
Maximum humidity: 95 % non-condensing at 40 °C (104 °F)
6.1.9 Storage
-40 °C (-40 °F) to +55 °C (131 °F) for long term storage, or to +70 °C
(158 °F) for short term storage.
Storage time is 2 years.
Electrolytic capacitors in any electronic product have a storage period
after which they require reforming or replacing.
The DC bus capacitors have a storage period of 10 years.
6.1.10 Altitude
Altitude range: 0 to 3,000 m (9,900 ft), subject to the following
conditions:
1,000 m to 3,000 m (3,300 ft to 9,900 ft) above sea level: de-rate the
maximum output current from the specified figure by 1% per 100 m
(330 ft) above 1,000 m (3,300 ft)
For example at 3,000 m (9,900 ft) the output current of the drive would
have to be de-rated by 20 %.
6.1.11 IP Rating
The drive is rated to IP20 (dry, non-conductive contamination only).
The IP rating of a product is a measure of protection against ingress and
contact to foreign bodies and water. It is stated as IP XX, where the two
digits (XX) indicate the degree of protection provided as shown in
Table 6-14.
Table 6-14 IP Rating degrees of protection
6.1.12 Corrosive gasses
Concentrations of corrosive gases must not exceed the levels given in:
• Table A2 of EN 50178:1998
• Class 3C2 of IEC 60721-3-3
This corresponds to the levels typical of urban areas with industrial
activities and/or heavy traffic, but not in the immediate neighbourhood of
industrial sources with chemical emissions.
6.1.13 RoHS compliance
The drive meets EU directive 2002-95-EC for RoHS compliance.
6.1.14 Vibration
Maximum recommended continuous vibration level 0.14 g r.m.s.
broadband 5 to 200 Hz.
This is the limit for broad-band (random) vibration. Narrow-band
vibration at this level which coincides with a structural resonance could
result in premature failure.
The following tests were carried out to verify the robustness of the
Digitax HD M75X range. The tests are not recommended installation
conditions.
Model Voltage Frequency range
Digitax HD
M75X 200 V
200 V to 240 V
±10 %
single phase
45 to 66 Hz
Digitax HD
M75X 200 V
200 V to 240 V
±10 %
three phase*
45 to 66 Hz
Digitax HD
M75X 400 V
380 V to 480 V
±10 %
three phase*
45 to 66 Hz
First digit Second digit
Protection against foreign bodies
and access to hazardous parts
Protection against ingress of
water
0 Non-protected 0 Non-protected
1
Protected against solid foreign
objects of 50 mm and greater
(back of a hand)
1
Protected against vertically
falling water drops
2
Protected against solid foreign
objects of 12.5 mm and
greater
(finger)
2
Protected against vertically
falling water drops when
enclosure tilted up to 15 °
3
Protected against solid foreign
objects of 2.5 mm and
greater (tool)
3
Protected against spraying
water
4
Protected against solid foreign
objects of 1.0 mm and
greater (wire)
4
Protected against splashing
water
5 Dust-protected (wire) 5 Protected against water jets
6 Dust-tight (wire) 6
Protected against powerful
water jets
7- 7
Protected against the effects
of temporary immersion in
water
8- 8
Protected against the effects
of continuous immersion in
water
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