General Inspection Items; Inspection Frequency; Cautions On Using The Product - Fuji Electric MICREX-SX series SPF User Manual

Section 5 Maintenance and Inspection

5-1 General Inspection Items

For use of the SPF under the best operating conditions, periodic inspection must be performed.

5-1-1 Inspection frequency

The SPF is a highly-reliable programmable controller, consisting mainly of semiconductor devices. However, because
deterioration of devices may occur due to environmental conditions, periodic inspection is recommended. The standard
inspection should be done once or twice a year; however, it can be shorter, depending on environmental conditions. If any
inspection result does not match the rated value, check the operating conditions to make sure they are appropriate.

5-1-2 Cautions on using the product

Select a wire size to suit the applied voltage and carrying current, and carry out wiring according to the operating
instructions and manual. Poor wiring might cause fire.
Operate (keep) in the environment specified in the operating instructions and manual. High temperature, high humidity,
condensation, dust, corrosive gases, oil, organic solvents, excessive vibration or shock might cause electric shock, fire,
erratic operation or failure.
Contaminants, wiring chips, iron powder or other foreign matter must not enter the device when installing it, otherwise,
erratic operation or failure might occur.
Periodically make sure the terminal screws and mounting screws are securely tightened.
Before touching the PLC, discharge any static electricity that may have been collected on your body. To discharge it, touch
a grounded metallic object. Static electricity might cause erratic operation or failure of the module.
Caution
5-1