Unidrive M200-201 Quick Start Guide
13
Issue Number: 7
Size 4:
< 1 mA
4.3.1 Use of residual current device (RCD)
There are three common types of ELCB / RCD:
1. AC - detects AC fault currents
2. A - detects AC and pulsating DC fault currents (provided the DC current reaches zero at least
once every half cycle)
3. B - detects AC, pulsating DC and smooth DC fault currents
•
Type AC should never be used with drives.
•
Type A can only be used with single phase drives
•
Type B must be used with three phase drives
If an external EMC filter is used with an ELCB / RCD, a delay of at least 50 ms should be
incorporated to ensure spurious trips are not seen. The leakage current is likely to exceed the trip
level if all of the phases are not energized simultaneously.
4.4 Control terminal configurations and wiring
* With Unidrive M201, the default is PAd (5). The setting of Pr
05
automatically sets the drive
configuration.
The above leakage currents are just the leakage currents of the drive and do not take into
account any leakage currents of the motor or motor cable.
When the internal filter is installed the leakage current is high. In this case a permanent
fixed ground connection must be provided, or other suitable measures taken to prevent a
safety hazard occurring if the connection is lost.
When the leakage current exceeds 3.5 mA, a permanent fixed ground connection must be
provided using two independent conductors each with a cross-section equal to or
exceeding that of the supply conductors. The drive is provided with two ground
connections to facilitate this. Both ground connections are necessary to meet EN 61800-
5-1: 2007.
Only type B ELCB / RCD are suitable for use with 3 phase inverter drives.
05
Drive Configuration
RW
Txt
PT
US
OL
Ú
AV (0), AI (1), AV.Pr (2), AI.Pr (3),
PrESEt (4), PAd (5), PAd.rEF (6),
E.Pot (7), torquE (8), Pid (9)
Ö
AV (0)*
RFC-A
NOTE
WARNING
WARNING
WARNING