Hitachi IR.Station, Руководство по оборудованию

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1 BEFORE USE
- 5 -
„ Internal parts replacement
User must not replace internal parts of the Programmable Controller with anything other than the
parts specified in the manual. Replace the entire module in which a defective part is included.
For details on parts replacement, contact your Hitachi maintenance personnel.
„ Module insertion/removal
Power must be turned off while a module is inserted or removed. Insertion or removal of a
module when power is ON may cause damage to the module or electric shock.
„ Equipment addition
If the peripheral equipment is added or altered, conduct an inspection as directed in Section 7.1,
"Preventive Maintenance" to confirm whether the Programmable Controller is properly
functioning.
Special attention must be paid to the following regarding power supply and grounding.
z Power supply
* Inspection of the supply voltage and waveform.
−
Check for a voltage reduction.
−
Check for a significance in the amount of noise in the power supply line.
Supply
voltage
S10mini
Normal waveform
Abnormal waveform
Excessive noise Waveform distortion Square wave
Figure 1-4 Power Supply Input Waveform