Honeywell SmartVFD HVAC MR4, User Manual

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P
OWER CABLING
Honeywell
• 20
4
4. P
OWER CABLING
The mains cables are connected to terminals L1, L2 and L3 and the motor cables to terminals
marked with U, V and W. See Table 7 for the cable recommmendations for different EMC lev-
els.
Use cables with heat resistance of at least +158°F. The cables and the fuses must be dimen-
sioned according to the drive nominal OUTPUT current which you can find on the rating plate.
Table 7. Cable types required to meet standards
1 = Power cable intended for fixed installation and the specific mains voltage. Shielded
cable not required. (MCMK or similar recommended).
2 = Symmetrical power cable equipped with concentric protection wire and intended for the
specific mains voltage. (MCMK or similar recommended). See Figure 16.
3 = Symmetrical power cable equipped with compact low-impedance shield and intended
for the specific mains voltage. [MCCMK, EMCMK or similar recommended; Recom-
mended cable transfer impedance (1...30MHz) max. 100mohm/m]. See Figure 16.
*360º grounding of the shield with cable glands in motor end needed for EMC level C2.
4 = Screened cable equipped with compact low-impedance shield (JAMAK, SAB/ÖZCuY-
O or similar).
Figure 16.
NOTE : The EMC requirements are fulfilled at factory defaults of switching frequencies (all
frames).
NOTE: If safety switch is connected the EMC protection shall be continuous over the whole ca-
ble installation.
1
st
environment 2nd environment
Cable type
EMC levels
According to EN61800-3 (2004)
Category C2 Category C3 Level T
Mains cable 1 1 1
Motor cable 3* 2 2
Control cable 4 4 4
PE conductor
and shield
PE conductors
Shield