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MHT258a (Engl.)
9-1
9. INSPECTION AND MAINTENANCE
9.1 Inspection
(1) Before inspection
DANGER
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Prior to inspection, turn off power and wait for at least five minutes. Otherwise, there is a risk of electric shock.
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Do not touch the amplifier when the commercial power is supplied. Otherwise, there is a risk of electric shock.
(2) Inspection items
Device
Inapplicable item
Motor
Abnormal vibration (on motor-shaft and bearing-housings, etc.)
Direct exposure to water, steam or oil
Misalignment of mechanical coupling at shaft extension
Amplifier
Loose screws of terminal block (board) and fastening parts
Excessive accumulation of dust
Damage due to heat, external deformation, cable-wire discontinuation, etc.
Ensure that the “CHARGE* LED is extinguished (goes out) on touch panel, before the checking of electrical wirings.
CAUTION
Withstand voltage and insulation test with megger and connection test of PC-board and terminals of amplifier must not
be conducted.
9.2 Memory backup
(1) Memory backup
An electrically rewritable EEPROM is used for retaining the following items after turning off power supply.
(i) Basic para. and system para.
(ii) Positioning data (RYS-L type amplifier only)
(iii) Alarm detection history
Each area can be initialized by turning off the run command [RUN] of the amplifier (while motor is de-energized).
(a) Initialization of para.
To initialize, select the initialization [Fn006] of para. in the test running mode and press the ENT key.
Notice : After the initialization, be sure to turn on power again.
The initialization is not allowed if rewrite is inhibited by system para. 94.
The initialization is impossible while the motor is energized with the [RUN] signal on.
(b) Initialization of positioning data (RYS-L type amplifier only)
To initialize, select the initialization [Fn007] of positioning data in the test running mode and press the ENT key.
Notice : After the initialization, be sure to turn on power again.
The initialization is not allowed if rewrite is inhibited by system para. 95.
The initialization is impossible while the motor is energized with the [RUN] signal on.
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