Optical Components; Checking The Insulation Of The Assembly; Inverter Modules; Motor And Motor Cable - ABB ACS880-104 Hardware Manual

Optical components

Handle fiber optic cables with care. When unplugging optic cables, always grab the
connector, not the cable itself. Do not touch the ends of the fibers with bare hands as the
fiber is extremely sensitive to dirt. The specifications of the optic cable are as follows:
•
Storage temperature: -55 ... +85 °C
•
Installation temperature: -20 ... +70 °C
•
Maximum short-term tensile force: 50 N
•
Minimum short-term bend radius: 25 mm
•
Minimum long-term bend radius: 35 mm
•
Maximum long-term tensile load: 1 N
•
Flexing: Max. 1000 cycles
ABB drive products in general utilize 5 and 10 MBd (megabaud) optical components from
Avago Technologies' Versatile Link range. Please note that the optical component type is
not directly related to the actual communication speed.
Note: The optical components (transmitter and receiver) on a fiber optic link must be of the
same type.
Plastic optical fiber (POF) cables can be used with both 5 MBd and 10 MBd optical
components. 10 MBd components also enable the use of Hard Clad Silica (HCS
which allow longer connection distances thanks to their lower attenuation. HCS
cannot be used with 5 MBd optical components.
The maximum lengths of fiber optic links for POF and HCS
respectively.
®
HCS is a trademark of SpecTran Corporation.

Checking the insulation of the assembly

WARNING! Check the insulation before connecting the drive system to the main
power supply. Make sure that the drive system is disconnected from the main
power supply.

Inverter modules


Every ACS880-104 inverter module has been tested for insulation between the main
circuit and the chassis (2500 V rms 50 Hz for 1 second) at the factory. Therefore, do not
make any voltage tolerance or insulation resistance tests (e.g. hi-pot or megger) on the
inverter units or modules.

Motor and motor cable


Check the insulation of the motor and motor cable as follows:
•
Check that the motor cable is connected to the motor, and disconnected from the drive
output terminals U2, V2 and W2.
•
Measure the insulation resistance between each phase conductor and then between
each phase conductor and the Protective Earth (PE) conductor using a measuring
voltage of 1000 V DC. The insulation resistance of an ABB motor must exceed
100 Mohm (reference value at 25 °C or 77 °F). For the insulation resistance of other
motors, please consult the manufacturer's instructions.
Electrical installation 147
®
) cables,
® cables
®
cables are 20 and 200 meters