SSD 605C Product Manual - page 28
3-6
Installing the Inverter
605C Frequency Inverter
Protective Earth (PE) Connections
IMPORTANT: The unit must be permanently earthed. Each conductor used for permanent earthing
must individually meet the requirements for a protective earth conductor.
For installations to EN 60204 in Europe:
• for permanent earthing, two individual incoming protective earth conductors (
section) or one conductor (>10mm² cross-section) are required.
Protect the incoming mains supply as shown in Chapter 11: “Technical Specifications” - Power
Details, using a suitable fuse or circuit breaker (a circuit breaker, e.g. RCD, ELCB, GFCI, is not
recommended, refer to “Earth Fault Monitoring Systems”, page 3-13).
IMPORTANT: The Inverter fitted with an external ac supply EMC filter is only suitable for earth
referenced supplies (TN). The Inverter requires two individual incoming protective earth
conductors to the filter when fitted, refer to Chapter 12: “Certification for the Inverter” -
EMC Installation Options.
Power Wiring Connections
1. Remove the terminal cover retaining screws and lift off the terminal cover.
2. Lift the internal power terminal shield.
3. Feed the power supply and motor cables into the inverter through the metal gland plate
using the correct cable entries, and connect to the power terminals. Tighten the terminals to
a torque of 1.0Nm (9 in.lb). Refer to Figure
3-8
above.
4. Lower the internal power terminal shield.
DBR+ DBR-
brake
resistor
MOT/TEMP
PE1
PE2
3PH
PE
L1
L2
L3
M
Brake resistor and cable must be screened
if not fitted inside a control cubicle
L1
L2
DC+
DC-
M1/U M2/V M3/W
L3
motor thermistor
(link out if thermistor
not connected)
Figure 3-8 Earth and Power Wiring Connections for Three Phase Input
PE
power wiring
to motor
metal gland must
have 360 degree
screened connection
for EMC compliance
M
PE
PE
Protective Earth
International
grounding symbol
M
power wiring
to motor
gland plate
2
earth clamp connection
1
metal cable gland
fit cup washer
over cable screen
screen