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The Linear Guides equip with NSK K1 lubrication unit. Life of K1 lubrication is 5 years or 10 000 km
running, whichever comes first. Be sure to give periodical replenishment with grease thereafter.
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It is possible to replace the K1 lubrication unit when it comes to its life.
3 Periodical check
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Puncture of the Motor, cable shorting or snapping may occur depending on using condition and
environment. If the Motor is left in such conditions, it cannot exhibit its capability 100 % and will lead to
the trouble of the Driver Unit. We recommend the periodical check in order to detect the problem in its
early stage.
3. Before concluding that the system is defective, check the matters again.
1 Alarm arises.
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Did you take proper action to the alarm? Refer to the manual for the remedy again.
2 Power does not turn on. Indication lamp does not turn on.
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Check voltage of main and control power by a tester if the voltage is in the range of specification
described in the User’s manual.
3 The Motor does not function.
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Turn the power off, disconnect the connector CN4 of the Driver Unit, and then move the slider manually.
Does it operate smoothly? Any unevenness in motion? (Never disassemble the Motor.)
(If the connector CN4 remains connected, the motion of the slider will be heavier due to dynamic brake.)
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Are the control Input/Output signals functioning properly?
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Monitor status of SVON, RUN and IPOS signals by I/O command through the Handy Terminal.
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Check if the voltage of input signal and 24 V power source are stable using an oscilloscope etc.
4 Uncontrollable Driver Unit
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Compare the current setting of parameters with the original setting at the installation.
5 The Motor vibrates. Positioning is inaccurate. Alarm of software thermal arises frequently.
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Are servo parameters VG, VI, PG, FP and NP adjusted properly
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Do you fasten the fixing bolts of load and the Motor securely? Check and fasten them tightly if necessary.
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Connect FG terminal of the Driver Unit to one point grounding. Ground the Motor and the Driver Unit
respectively. (Refer to the User’s Manual for wiring.)
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Is any external interference to the direction of motion in Servo lock state? (It leads to the Motor overheat
if external force is applied to the Motor in servo lock state.)
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Do you use shielded cable for input signals? Is the shield perfect?
6 Fuses are blown. Breaker trip occurs frequently.
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When the system recovers by remaking the power, take the following action.
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Install a delay type breaker.
(Select the breaker that has enough capacity for power consumption of the Driver Unit.)
4. Others
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Combination of the Motor and the Driver Unit shall conform to the specification.
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Be sure to write down the setting of parameters.
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Never modify the cable set.
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Lock the connectors securely and check for loose fixing screw(s).
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Please keep expendable parts and backup parts. (the Motor, the Driver Unit and Cable set for replace)
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Use isoplopyl alcohol for cleaning. Do not apply the thinner.
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