64 Electrical installation
The EMC grounding screw is
located on the bottom of the
frame in R3 and R4 frames.
Ground-to-phase
varistor
The metallic varistor screw
(VAR) connects the varistor
protection circuit to electrical
ground.
To disconnect the varistor
circuit from ground, remove
the varistor grounding screw.
Refer to
on page
.
In some product variants, the
varistor protection circuit is
disconnected from electrical
ground at the factory with a
non-conducting (plastic)
screw.
WARNING!
If you connect the drive to an IT system (an ungrounded power
system or a high-resistance-grounded [over 30 ohms] power system),
disconnect the varistor from ground. Failure to do so can cause damage to the
varistor circuit.
Summary of Contents for ACS380 Series
Page 1: ...ABB MACHINERY DRIVES ACS380 drives Hardware manual...
Page 4: ......
Page 12: ...12 Table of contents...
Page 20: ...20 Safety instructions...
Page 46: ...46 Mechanical installation...
Page 60: ...60 Planning the electrical installation...
Page 86: ...86 Maintenance...
Page 120: ...120 Technical data...
Page 122: ...122 Dimension drawings Frame R0 1 phase 230 V...
Page 123: ...Dimension drawings 123 Frame R0 400 V...
Page 124: ...124 Dimension drawings Frame R1 230 V...
Page 125: ...Dimension drawings 125 Frame R1 3 phase 230 V and 3 phase 400 V...
Page 126: ...126 Dimension drawings Frame R2 230 V...
Page 127: ...Dimension drawings 127 Frame R2 400 V...
Page 128: ...128 Dimension drawings Frame R3 400 V...
Page 129: ...Dimension drawings 129 Frame R4 400 V...
Page 130: ...130 Dimension drawings...
Page 138: ...138 Resistor braking...
Page 169: ...BTAC 02 pulse encoder interface module 169 Dimensions 3AXD50000031154 rev A...