Corrected from:i700 servo inverter, hardware manual and online help, revised edition for firmware V01.10.12
Response of the new version:
The information on residual-current circuit breakers (FI, RCD) provided in the i700 hardware manual has been corrected.
What happens?
i700 hardware manual (EDS700ACBA DE 4.0): Chapter '11.3 RFI filter/mains filter' incorrectly states that, by using RFI filters, the i700 may be operated on 30-mA residual-current circuit breakers (FI, RCD).
However, actually, only RCDs from 300 mA have been approved by Lenze. The trigger threshold of these types is correspondingly higher.
When does this behaviour occur?
Depending on the motor cable lengths and the selected switching frequency, there may be leakage currents of up to 100mA during operation. For the i700, the leakage currents may thus, if necessary, be above the trigger threshold of an 30-mA RCD.
Which products are affected?
i700 servo inverter: Hardware manual and online help in the engineering tools.
Short-term measures:
Only use 300-mA residual-current circuit-breakers.
Under normal operating conditions, the leakage currents of the i700 servo inverter are at least in the range of the trigger threshold of 30-mA RCDs, often even above this range.
Therefore, the RCDs may erroneously respond when using 30-mA residual-current circuit-breakers. For this reason, it is not useful to use this RCD type in practical operation.
