Ac Line Power Connection; Control Wiring - Danfoss FC 103 Instruction Manual

Electrical Installation
4 4
Figure 4.5 Motor Connection
Figure 4.6 represents line power input, motor, and
grounding for basic adjustable frequency drives. Actual
configurations vary with unit types and optional
equipment.
Figure 4.6 Example of Motor, Line Power and Ground Wiring
18
Instruction Manual

4.7 AC Line Power Connection

Procedure

4.8 Control Wiring

- LC -
Danfoss A/S © Rev. 2014-04-10 All rights reserved.
•
Size wiring based upon the input current of the
adjustable frequency drive. For maximum wire
sizes, see chapter 8.1 Electrical Data.
•
Comply with local and national electrical codes
for cable sizes.
1. Connect 3-phase AC input power wiring to
terminals L1, L2, and L3 (see Figure 4.6).
2. Depending on the configuration of the
equipment, input power is connected to the line
power input terminals or the input disconnect.
3. Ground the cable in accordance with grounding
instructions provided in chapter 4.3 Grounding.
4. When supplied from an isolated line power
source (IT line power or floating delta) or TT/TN-S
line power with a grounded leg (grounded delta),
ensure that 14-50 RFI 1 is set to [0] Off to avoid
damage to the intermediate circuit and to reduce
ground capacity currents in accordance with IEC
61800-3.
•
Isolate control wiring from high power
components in the adjustable frequency drive.
•
When the adjustable frequency drive is
connected to a thermistor, ensure that the
thermistor control wiring is shielded and
reinforced/double insulated. A 24 V DC supply
voltage is recommended.
MG16E322