Connection Procedure - ABB ACS850-04 Guía De Instalación Rápida

6

Connection procedure

Cabling examples are presented on page 7.
Tightening torques are presented on page
and at appropriate points in the text.
• Attach the terminal blocks included to the
drive.
• ACS850-04-025A-2...094A-2 and
-025A-5...094A-5 only: Remove the two
plastic connector covers at the top and
bottom of the drive. Each cover is held by
two screws.
• On IT (ungrounded) systems and corner-
grounded TN systems, remove the following
screws:
VAR (ACS850-04-03A0-2...018A-2 and
-03A0-5...018A-5);
EMC, VAR1 and VAR2 (ACS850-04-025A-
2...094A-2 and -025A-5...094A-5).
• Fasten the two cable clamp plates included
to the drive, one at the top, one at the
bottom. The clamp plates are identical.
Quick installation guide - ACS850-04
7
ACS850-04-03A0-2...018A-2
and -03A0-5...018A-5:
1.5 N·m (13 lbf·in)
ACS850-04-025A-2...094A-2
and -025A-5...094A-5:
3 N·m (25 lbf·in)
1.5 N·m
(13 lbf·in)
• Strip the power cables so that the shields are
bare at the cable clamps.
• Connect the supply, resistor (if present) and
motor cables to the appropriate terminals of
the drive.
• Tighten the cable clamps onto the bare cable
shields. Connect the ends of the cable
shields to the ground terminals using cable
lugs. Cover visible bare shield with insulating
tape.
• ACS850-04-025A-2...094A-2 and
-025A-5...094A-5 only: Cut suitable slots on
the edges of the connector covers to
accommodate the cables. Refit the covers.
• Ground the motor cable shield at the motor
end.