See EN60364-5-54 paragraph 543.7 for further information.
2.6.1 Residual Current Device (RCD)
Protection
This product can cause a DC current in the protective
conductor. Where a residual current device (RCD) is used
for protection in case of direct or indirect contact, only an
RCD of Type B (time delayed) is allowed on the supply side
of this product. Otherwise, apply another protective
measure, such as separation from the environment by
double or reinforced insulation, or isolation from the
supply system by a transformer.
Protective earthing of the frequency converter and the use
of RCDs must always follow national and local regulations.
Failure to follow recommendations for Leakage Current
and Residual Current Device could result in death or
serious injury.
2.7 Galvanic Isolation (PELV)
PELV offers protection by way of extra low voltage.
Protection against electric shock is ensured when the
electrical supply is of the PELV type and the installation is
made as described in local/national regulations on PELV
supplies.
All control terminals and relay terminals 01-03/04-06
comply with PELV (Protective Extra Low Voltage) (Does not
apply to grounded Delta leg above 400 V).
Galvanic (ensured) isolation is obtained by fulfilling
requirements for higher isolation and by providing the
relevant creapage/clearance distances. These requirements
are described in the EN/IEC 61800-5-1 standard.
The components that make up the electrical isolation, as
described, also comply with the requirements for higher
isolation and the relevant test as described in EN/IEC
61800-5-1.
The PELV galvanic isolation is shown in
To maintain PELV, all connections made to the control
terminals must be PELV.
1.
High voltage circuit
2.
I/O control card
3.
Custom relays
195NA438.10
+24V
18
37
Functional
isolation
RS485
Relay
output
High
voltage
Control
PELV isolation
Mains
Motor
DC-Bus
Thermistor
Input
2
1
3
Illustration 2.16 Galvanic Isolation
NOTICE
HIGH ALTITUDE
For installation at altitudes above 2000 m, contact
Danfoss hotline regarding PELV.
Product Overview
VLT
®
DriveMotor FCP 106 and FCM 106 Design Guide
MG03M102 -
08/2015
21
2
2
