Parker EX Series, Техническое руководство

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– Pvd3665_Gb_Ex_August 2022
It is mandatory to connect 2 (green-yellow) ground cables between the motor
frame and machine.
•
the first one is connected to ground screw on the PCB inside the motor,
•
the other one is connected to the external motor housing
The connecting of these two grounding devices is mandatory in order to
comply with ATEX standard IEC/EN 60079-0.
The ground cable cross-section must be the same as the power cable cross-
section
3.8.3. Conversion Awg/kcmil/mm²:
Awg kcmil mm²
500 253
400 203
350 177
300 152
250 127
0000 (4/0) 212 107
000 (3/0) 168 85
00 (2/0) 133 67.4
0 (1/0) 106 53.5
1 83.7 42.4
2 66.4 33.6
3 52.6 26.7
4 41.7 21.2
5 33.1 16.8
6 26.3 13.3
7 20.8 10.5
8 16.5 8.37
9 13.1 6.63
10 10.4 5.26
11 8.23 4.17
12 6.53 3.31
14 4.10 2.08
16 2.58 1.31
18 1.62 0.82
20 1.03 0.52
22 0.63 0.32
24 0.39 0.20
26 0.26 0.13
3.8.4. Motor cable length
For motors windings which present low inductance values or low resistance values, the own
cable inductance, respectively own resistance, in case of large cable length can greatly
reduce the maximum speed of the motor. Please contact PARKER for further information.
Caution: It might be necessary to fit a filter at the servo-drive output if the
length of the cable exceeds 25 m. Consult us.
The length of the cable must be of 3 meters min.