R6...R9
1
8. Attach a residual voltage warning sticker to the drive in the local language
Frames R1...R4: to the control panel mounting platform, Frames R5...R9: next to the control unit.
9. Make sure that the drive is compatible with the grounding system
You can connect all drives to a symmetrically grounded TN-S system (center-grounded wye). If you install the drive to a
different system, you must disconnect the EMC screw (disconnect the EMC filter) and/or disconnect the VAR screw
(disconnect the varistor circuit).
Frame size
Symmetrically
grounded TN-S systems
(center-grounded wye)
R1...R3
Do not disconnect EMC
or VAR screw.
R4 v2
R4...R5
Do not disconnect EMC
or VAR screw.
R6...R9
Do not disconnect EMC
or VAR screw.
1) A residual current device must be installed in the supply system.
2) ABB does not guarantee the EMC category or the operation of the ground leakage detector built inside the drive.
10. Measure the insulation resistance of the power cables and the motor
Measure the insulation resistance of the input cable before you connect it to the
drive. Obey local regulations.
Measure the insulation resistance of the motor cable and motor when the cable is
disconnected from the drive. Measure the insulation resistance between each
phase conductor and the PE conductor. Use a measuring voltage of 1000 V DC. The
insulation resistance of an ABB motor must be more than 100 Mohm (reference
value at 25 °C [77 °F]). For the insulation resistance of other motors, see the
manufacturer's instructions. Moisture inside the motor decreases the insulation
resistance. If you think that there is moisture inside the motor casing, dry the motor
and do the measurement again.
2
Corner-grounded delta
IT systems (ungrounded
and midpoint-grounded
or high-resistance
delta systems
grounded)
Disconnect EMC screw.
Disconnect EMC and VAR
screws.
Do not disconnect VAR
screw.
Note: The drive is not
Disconnect EMC screws
evaluated for use on
(2 pieces) and VAR screw.
these systems by IEC
standards.
Do not disconnect EMC
Disconnect EMC screws
AC or VAR screws.
(2 pieces) and VAR screw.
Disconnect EMC DC
screw.
M8×6
TT systems
Disconnect EMC and VAR
screws.
Disconnect EMC screws
(2 pieces) and VAR screw.
Disconnect EMC screws
(2 pieces) and VAR screw.
ohm
U1-PE, V1-PE, W1-PE
5
1) 2)
U1
M
V1
3~
W1
PE
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