REXROTH IndraDrive - Limit Values for Noise Immunity; Noise Emission of the Drive System; Causes of Noise Emission

Limit Values for Noise Immunity
No Place of effect
Phenom‐
enon
Standard Conditions Coupling
Test values accord‐
ing standard EN
61800-3
Perform‐
ance level
Enclosure port IEC 61000-4-2 CD, AD
6 kV CD, 8 kV AD, if
CD not possible
B
RF Field IEC 61000-4-3
Via antenna on
EUT
10 V / m A
Power port Burst IEC 61000-4-4 length > 3 m
mains connection
I < 100 A: discou‐
pling network
I > 100 A: clamp
4 kV / 2.5 kHz
(clamp)
B
Surge IEC 61000-4-5
Only mains
connection;
I < 63 A,
light load test
Line – line 1 kV
(2 Ohm)
Line – earth 2 kV
(12 Ohm)
B
IEC 61000-4-6 length > 3 m clamp 10 V, 0.15–80 MHz A
Power Interface Burst IEC 61000-4-4 length > 3 m clamp B
Signal Interface Burst IEC 61000-4-4 length > 3 m clamp B
IEC 61000-4-6 length > 3 m Clamp or CDN 10 V, 0.15–80 MHz B
Ports of process;
measurement
control lines
Burst IEC 61000-4-4 length > 3 m clamp B
IEC 61000-4-6 length > 3 m Clamp or CDN 10 V, 0.15–80 MHz A
Tab.10-1: Noise Immunity Limit Values
Evaluation Criterion
Explanation (abbreviated form from EN
61800-3)
A Deviations within allowed range
B Automatic recovery after interference
C
Switched off without automatic recovery.
Device remains undamaged.
Tab.10-2: Evaluation Criterion
10.1.3 Noise Emission of the Drive System
Causes of Noise Emission
Controlled variable-speed drives contain converters containing snappy semi‐
conductors. The advantage of modifying the speed with high precision is ach‐
ieved by means of pulse width modulation of the converter voltage. This can
generate sinusoidal currents with variable amplitude and frequency in the
motor.
The steep voltage rise, the high clock rate and the resulting harmonics cause
unwanted but physically unavoidable emission of interference voltage and in‐
terference fields (wide band interference). The interference mainly is asym‐
metric interference against ground.
The propagation of this interference strongly depends on:
Bosch Rexroth AG DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
182/309
Electromagnetic Compatibility (EMC)