Application guidelines
30
FRCC.PC.014.A4.22
The CDS302 frequency converter generates by
design a compressor soft start with an initial
ramp up of 0.9 sec.
Current inrush is at highest the frequency con-
verter maximum current.
Basically seen from the mains the inrush peak
reach a level which is only a few percent more
than the rated nominal current.
Soft-start control
Electrical power is connected to the compres-
sor terminals by Ø 3/16” screws. The maximum
thightening torque is 2ft.lbs. Use a 1/4” ring
terminal on the power leads.
The cable gland has to be of EMC design to ga-
ranty a good grounding of the armored cable.
Paint free areas on electrical box allow correct
ground continuity.
Electrical connections
The CDS302 frequency converter is preset to
run the VSH compressors clockwise so the only
care is to well connect the CDS302 output to the
compressor connectors:
• CDS302 terminal U (96) to VSH terminal T1/U
• CDS302 terminal V (97) to VSH terminal T2/V
• CDS302 terminal W (98) to VSH terminal
T3/W
Mains connection to the CDS302 frequency
converter order has no influence on the output
phase sequence which is managed by the fre-
quency converter.
Phase sequency and
reverse rotation protection
Electrical data, connections and wiring