Electrical Connections; Soft-Start Control; Phase Sequency And Reverse Rotation Protection - Danfoss VSH088 Application Manuallines

Application guidelines

Electrical connections

Soft-start control

Phase sequency and
reverse rotation protection
30
FRCC.PC.014.A4.22
Electrical data, connections and wiring
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 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-
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
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.
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.
Mains connection to the CDS302 frequency
converter order has no influence on the output
phase sequence which is managed by the fre-
quency converter.