Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,
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The voltage level must be selected before the braking chopper is mounted. The voltage is set, according to the mains voltage, with a jumper on the chopper control board. (The front cover of the chopper has to be removed to access the jumper.) CAUTION! Incorrect jumper setting or missing jumper may cause braking chopper malfunctioning or damage to the chopper or resistor.
Synchronisation of Multiple Choppers The FIBER position is used if two (or more) choppers are connected to the same intermediate circuit and must be synchronised. One chopper – the first in the chain – acts as the master for the other choppers. The voltage selection jumper of the master is set to the appropriate voltage, while the slaves are set to FIBER.
WARNING! Do not touch the printed circuits. They are extremely sensitive to electrostatic discharge.
WARNING! Before starting the installation work inside the ACS 600: Switch off the ACS 600 power supply. Wait for five minutes to ensure that the intermediate circuit is discharged. Switch off dangerous voltages connected from external circuits to the digital inputs and to the relay outputs of the ACS 600. WARNING! Do not touch the printed circuit boards. The integrated circuits are extremely sensitive to electrostatic discharge. The dimensional drawing of the NBRA-653/663 is presented in Appendix A. Installation Site The NBRA-653/663 is protected to IP54. This must be considered when selecting the installation site. The following restrictions should also be noted: • Leave 150 mm free space below and above the braking chopper. • To prevent the chopper overheating, do not mount the chopper directly above the braking resistor. • Leave 300 mm free space below and above the ACS 600 unit. • The maximum lengths of the chopper and resistor cables are 5 m and 10 m respectively.