6-10
Planning the electrical connections
DKR Drive Controllers
DOK-DIAX03-DKR********-PR02-EN-P
The nominal current required is not dependent on the mains voltage.
There is a thyristor bridge on the mains of the DKR which operates
with phase control at a mains voltage of > 400 V. This keeps the DC
bus voltage at approximately 520 V. With higher mains voltages the
power factor, which is about 1 at 400 V, is reduced.
If the DKR must be connected via a transformer, then the secondary
voltage should equal 400 V.
2. Determine the conversion factor (as per EN 60 204-1/02.86). This
factor can be read directly from the following table using the highest,
i.e., the temperature at the machine.
Current load table
Conversion table for ambient
temperatures above 30 °C
rated cross
section of the
leads in m²
Current load of leads
on machines with
normal applications
in the channel "B2"
Ambient
temperature
in °C
Conversion factor
for Rexroth
Indramat cable
1
9.6
30
1.45
1.5
12.2
35
1.4
2.5
16.5
40
1.35
4
23
45
1.29
6
29
50
1.24
10
40
55
1.17
16
53
60
1.11
25
67
35
83
50
1)
98
1):
actual cross section equals 47 mm²
Fig. 6-10:
Conversion factor and current load table for ambient temperatures
greater than 30 °C (as per EN 60 204-1/02.86)
Note:
The dimensions of the cross sections of cable assembly made
by Rexroth Indramat meet the requirements set in
EN 60 204-1/02.86. For details on motor power cables, please
see the relevant motor documentation.
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