Honeywell SmartVFD HVAC2 Applications Manual page 37

General cabling rules
1 Before starting the installation, check that
none of the components of the frequency
converter is live.
2 Place the motor cables sufficiently far from
other cables:
• Avoid placing the motor cables in long
parallel lines with other cables.
• If the motor cable runs in parallel with other
cables, the minimum distance between the
motor cable and other cables is 1 ft. (0.3 m.)
• The given distance also applies between
the motor cables and signal cables of other
systems.
• The maximum length of the motor cables
for MI1-3 is 98 ft. (30 m). For MI4 & 5,
maximum length is 164 ft. (50 m), if use
longer cable, current accuracy will be
decreased.
• The motor cables should cross other cables
at an angle of 90 degrees.
3 If cable insulation checks are needed, see
Chapter "Cable and motor insulation checks"
on page 39.
4 Connecting the cables:
• Strip the motor and mains cables as advised
in Figure "Stripping of cables" on page 38.
• Connect the mains, motor and control
cables into their respective terminals, see
Figures "SmartVFD HVAC2 power
connections, MI1" on page 24 - "Install the
control cables. MI4 - MI5. See Chapter
"Control I / O" on page 53" on page 28.
• Note the tightening torques of power cables
and control cables given in chapter "Power
cabling" on page 24 and "Control cabling"
on page 26.
• For information on cable installation
according to UL regulations see Chapter
"Cable installation and the UL standards"
on page 38.
• Make sure that the control cable wires do
not come in contact with the electronic
components of the unit.
• Check the connection of the earth cable to
the motor and the frequency converter
terminals marked with
• Connect the separate shield of the motor
cable to the earth plate of the frequency
converter, motor and the supply centre.
37 31-00108—07