Digitax ST User Guide
179
Issue Number: 5
Sinusoidal Vibration Test
Testing in each of three mutually perpendicular axes in turn.
Referenced standard: IEC 60068-2-6: Test Fc:
Frequency range: 2* to 500 Hz
Severity: 3.5 mm peak displacement from 2* to 9 Hz
10 m/s² peak acceleration from 9 to 200 Hz
15 m/s² peak acceleration from 200 to 500 Hz
Sweep rate: 1 octave/minute
Duration: 15 minutes in each of 3 mutually perpendicular axes.
* Or lowest achievable on an electromagnetic shaker.
13.1.19 Starts per hour
By electronic control: unlimited
By interrupting the AC supply:
≤
60 (equally spaced)
13.1.20 Start up time
This is the time taken from the moment of applying power to the drive, to
the drive being ready to run the motor:: 4 s
13.1.21 Output speed range
0 to 40,000 rpm
13.1.22 Accuracy and resolution
Speed:
The absolute speed accuracy depends on the accuracy of the crystal
used with the drive microprocessor. The accuracy of the crystal is 100
ppm, and so the absolute speed accuracy is 100 ppm (0.01%) of the
reference, when a preset speed is used. If an analog input is used the
absolute accuracy is further limited by the absolute accuracy of the
analog input.
The following data applies to the drive only; it does not include the
performance of the source of the control signals.
Preset speed reference: 0.1 rpm
Precision speed reference: 0.001 rpm
Analog input 1: 16 bit plus sign
Analog input 2: 10 bit plus sign
Current:
The resolution of the current feedback is 10 bit plus sign.
Accuracy: typical 2 %
worst case 5 %
13.1.23 Acoustic noise
The heatsink fan generates the majority of the acoustic noise produced by
the drive. The heatsink fan is a dual speed fan. The drive controls the
speed at which the fan runs based on the temperature of the heatsink and
the drive's thermal model system.
Fan at high speed: 65 dB
Fan at low speed: 53 dB
13.1.24 Overall dimensions
H
Height including surface mounting brackets
W Width
D
Projection forward of panel when surface mounted
Table 13-17 Overall drive dimensions
13.1.25 Weight
2.1 kg (4.6 Ib)
13.1.26 Input current, fuse and cable size ratings
The input current is affected by the supply voltage and impedance.
Typical input current
The values of typical input current are given to aid calculations for power
flow and power loss.
The values of typical input current are stated for a balanced supply.
Maximum continuous input current
The values of maximum continuous input current are given to aid the
selection of cables and fuses. These values are stated for the worst case
condition with the unusual combination of stiff supply with bad balance.
The value stated for the maximum continuous input current would only
be seen in one of the input phases. The current in the other two phases
would be significantly lower.
The values of maximum input current are stated for a supply with a 2 %
negative phase-sequence imbalance and rated at the maximum supply
fault current given in Table 13-18.
Table 13-18 Supply fault current used to calculate maximum input currents
Table 13-19 Fuse ratings and cable sizes
Dimension
H
W
D
322 mm (12.677in)
62 mm (2.441in)
226 mm (8.898in)
Model
Symmetrical fault level (kA)
All
100
Fuses
The AC supply to the drive must be installed with suitable
protection against overload and short-circuits. Table 13-19
shows recommended fuse ratings. Failure to observe this
requirement will cause risk of fire.
WARNING
Model
No of
input
phases
Typical input
current
A
Maximum
continuous input
current
A
Fuse rating
Cable size
IEC class
gG
Class CC
Input
Output
mm
2
AWG
mm
2
AWG
DST1201
1
4.0
6
10
0.75
16
0.75
24
DST1202
1
7.6
10
10
1
16
0.75
22
DST1203
1
9.0
16
15
2.5
14
0.75
20
DST1204
1
13.4
16
20
2.5
12
0.75
18
DST1201
3
3.1
3.5
6
10
0.75
16
0.75
24
DST1202
3
6.4
7.3
10
10
1
16
0.75
22
DST1203
3
8.6
9.4
16
15
2.5
14
0.75
20
DST1204
3
11.8
13.4
16
20
2.5
12
0.75
18
DST1401
3
2.6
2.8
4
10
0.75
16
0.75
24
DST1402
3
4.2
4.3
6
10
0.75
16
0.75
24
DST1403
3
5.9
6.0
8
10
0.75
16
0.75
22
DST1404
3
7.9
8.0
10
10
1
16
0.75
20
DST1405
3
9.9
9.9
12
15
1.5
14
0.75
18
Control cable
≥
0.5
20
Summary of Contents for Digitax ST
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