ONOSOKKI TS-3200A, Инструкция по эксплуатации

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1.5 Precautions on Wiring of Torque Meter
In recent years, increasing number of test devices using or measuring inverters have been used. An
inverter emits noise because of the operating principle and may affect other devices near it. Torque meters
are not an exception. The degree of effect depends on the amount of noise generation, installation
condition of signal lines, device installation condition, distance between the inverter and device, and other
factors. Trouble caused by noise from the inverter can be reduced by observing the following precautions
on wiring installation. For other causes than noise from the inverter, it is recommended that the following
precautions be observed at the time of installation.
(1) Take measures for radiation noise on the side of the inverter unit and the motor.
(2) Separate the input and output lines of the main circuit of the inverter from the power and signal lines of
the torque meter (cables for torque counters and rotational counters).
The rough standard distance of separation is 300mm or more. If separation is difficult or
ineffective, apply metal conduit tubes to the power and signal lines of the torque meter
and then connect one side of the metal part to a good ground.
(3) Use the supplied cables for the power and signal lines of the torque meter.
(4) Connect the rack for the torque detector to a good ground.
(5) Connect the torque meter to a power circuit which is isolated from the power circuit of the
inverter.
If isolation results in no improvements, install a noise cut transformer for EMI measures,
etc.