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Chapter 3 – Mechanical Installation
Installation and Start-up Guide for NPBA-01
3-3
Mounting Inside
the ACS 601
The work inside the frequency converter should be carried out by a
qualified electrician only.
WARNING! Pay attention to the slowly discharging voltage of the
capacitor bank and the voltages that are connected from external
control circuits to the digital inputs and to the relay outputs.
WARNING! Do not touch the printed circuit boards. The integrated
circuits are extremely sensitive to electrostatic discharge.
Mounting instructions:
1. Stop the drive.
2. Switch off the power supply of the drive and all dangerous
voltages connected to the digital inputs and relay outputs.
3. Wait for five minutes to ensure that the capacitors in the
intermediate circuit have discharged.
4. Remove the front cover of the converter.
5. Ensure that the mains cable, motor cable and capacitor bank
(UDC+ and UDC-) are not powered.
6. Locate the position for the module (see
Appendix E - Assembly
Drawings). Remove the two screws from the assembly plate.
Fasten the mounting rail to its place using the two screws.
7. Push the module onto the rail. The module can be released by
pulling the locking spring with a screwdriver (see Figure 3-1).