Connection Diagram; Connection Procedure - ABB ACS880-34 Series Hardware Manual

1. Stop the drive and do the steps in section
you start the work.
2. Make sure that the resistor cable is connected to the resistor and disconnected from
the drive output terminals.
3. At the drive end, connect the R+ and R- conductors of the resistor cable together.
Measure the insulation resistance between the conductors and the PE conductor with
a measuring voltage of 1000 V DC. The insulation resistance must be more than 1 Mohm.
ohm
1 kV DC,
> 1 Mohm
￭

Connection diagram

See section Connecting the power cables (page
￭

Connection procedure

• Connect the brake chopper via fuses to drive module terminals UDC+ and UDC-.
• Connect the resistor cables to the brake chopper terminals. If a shielded three-conductor
cable with shield conductivity good enough for the protective earth (ground) conductor
is used, cut the third conductor. If the shield conductivity is not good enough, use the
third conductor as the PE conductor. Ground the twisted shield of the cable (protective
earth conductor of the resistor assembly) as well as any separate PE conductor (if
present) at both ends.
• Wire the thermal switch to the chopper enable input X1. Connect the fault indication
relay output X3 on the chopper control board to digital input DIIL (XD2D:1) of the drive.
In ACS880 primary control program, digital input DIIL is configured to parameter 20.12
Run enable 1 source by default. Parameter 20.11 Run enable stop mode is set to Coast.
Any temperature failure in resistor or chopper cabinet will stop the drive (motor-side
converter). It is not possible to start the drive while the chopper fault indication is on.
Electrical safety precautions (page 18)
R+
R-
PE
98).
Resistor braking 233
before