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2 - 6 2. INSTALLATION 2.5 Inspection items WARNING Before starting maintenance and/or inspection, turn off the power and wait for 15 minutes or more until the charge lamp turns off. Then, confirm tha t the voltage betwee…

2 - 5

2. INSTALLATION

(4) Bundle fixing

Fix the cable at the closest part to the connector with bundle material in order to prevent SSCNET

cable

from putting its own weight on CN1A

CN1B connector of servo amplifier. Optical cord should be given

loose slack to avoid from becoming smaller than the minimum bend radius, and it should not be twisted.

When bundling the cable, fix and hold it in position by using cushioning such as sponge or rubber which

does not contain migratable plasticizers.

If using adhesive tape for bundling the cable, fire resistant acetate cloth adhesive tape 570F (Teraoka

Seisakusho Co., Ltd) is recommended.

Optical cord

Loose slack

Recommended product:

NK clamp SP type

( NIX, INC.)

Cable

Connector

Bundle material

(5) Tension

If tension is added on optical cable, the increase of transmission loss occurs because of external force

which concentrates on the fixing part of optical fiber or the connecting part of optical connector. At worst,

the breakage of optical fiber or damage of optical connector may occur. For cable laying, handle without

putting forced tension. For the tension strength, refer to section 11.1.5.

(6) Lateral pressure

If lateral pressure is added on optical cable, the optical cable itself distorts, internal optical fiber gets

stressed, and then transmission loss will increase. At worst, the breakage of optical cable may occur. As

the same condition also occurs at cable laying, do not tighten up optical cable with a thing such as nylon

band (TY-RAP).

Do not trample it down or tuck it down with the door of control box or others.

(7) Twisting

If optical fiber is twisted, it will become the same stress added condition as when local lateral pressure or

bend is added. Consequently, transmission loss increases, and the breakage of optical fiber may occur at

worst.

(8) Disposal

When incinerating optical cable (cord) used for SSCNET

, hydrogen fluoride gas or hydrogen chloride gas

which is corrosive and harmful may be generated. For disposal of optical fiber, request for specialized

industrial waste disposal services who has incineration facility for disposing hydrogen fluoride gas or

hydrogen chloride gas.

2 - 6

2. INSTALLATION

2.5 Inspection items

WARNING

Before starting maintenance and/or inspection, turn off the power and wait for 15

minutes or more until the charge lamp turns off. Then, confirm that the voltage

between P(

) and N( ) is safe with a voltage tester and others. Otherwise, an

electric shock may occur. In addition, always confirm from the front of the servo

amplifier whether the charge lamp is off or not.

Any person who is involved in inspection should be fully competent to do the work.

Otherwise, you may get an electric shock. For repair and parts replacement,

contact your safes representative.

POINT

Do not test the servo amplifier with a megger (measure insulation resistance),

or it may become faulty.

Do not disassemble and/or repair the equipment on customer side.

It is recommended to make the following checks periodically.

(1) Check for loose terminal block screws. Retighten any loose screws.

(2) Check the cables and the like for scratches and cracks. Perform periodic inspection according to operating

conditions.

2.6 Parts having service lives

The following parts must be changed periodically as listed below. If any part is found faulty, it must be changed

immediately even when it has not yet reached the end of its life, which depends on the operating method and

environmental conditions. For parts replacement, please contact your sales representative.

Part name Life guideline

Servo amplifier

Smoothing capacitor 10 years

Relay

Number of power-on and number of emergency

stop times : 100,000 times

Cooling fan 10,000 to 30,000hours (2 to 3 years)

Absolute position battery Refer to section 12.2

(1) Smoothing capacitor

Affected by ripple currents, etc. and deteriorates in characteristic. The life of the capacitor greatly depends

on ambient temperature and operating conditions. The capacitor will reach the end of its life in 10 years of

continuous operation in normal air-conditioned environment.

(2) Relays

Their contacts will wear due to switching currents and contact faults occur. Relays reach the end of their life

when the cumulative number of power-on and emergency stop times is 100,000, which depends on the

power supply capacity.

(3) Servo amplifier cooling fan

The cooling fan bearings reach the end of their life in 10,000 to 30,000 hours. Normally, therefore, the

cooling fan must be changed in a few years of continuous operation as a guideline.

It must also be changed if unusual noise or vibration is found during inspection.

3 - 1

3. SIGNALS AND WIRING

WARNING

Any person who is involved in wiring should be fully competent to do the work.

Before wiring, turn off the power and wait for 15 minutes or more until the charge

lamp turns off. Then, confirm that the voltage between P(

) and N( ) is safe with

a voltage tester and others. Otherwise, an electric shock may occur. In addition,

always confirm from the front of the servo amplifier whether the charge lamp is off

or not.

Ground the servo amplifier and the servo motor securely.

Do not attempt to wire the servo amplifier and servo motor until they have been

installed. Otherwise, you may get an electric shock.

The cables should not be damaged, stressed excessively, loaded heavily, or

pinched. Otherwise, you may get an electric shock.

CAUTION

Wire the equipment correctly and securely. Otherwise, the servo motor may

operate unexpectedly, resulting in injury.

Connect cables to correct terminals to prevent a burst, fault, etc.

Ensure that polarity ( , ) is correct. Otherwise, a burst, damage, etc. may occur.

The surge absorbing diode installed to the DC relay designed for control output

should be fitted in the specified direction. Otherwise, the signal is not output due to

a fault, disabling the forced stop (EM1) and other protective circuits.

DOCOM

DICOM

24VDC

Control output

signal

Servo amplifier

DOCOM

DICOM

24VDC

Control output

signal

Servo amplifier

Use a noise filter, etc. to minimize the influence of electromagnetic interference,

which may be given to electronic equipment used near the servo amplifier.

Do not install a power capacitor, surge suppressor or radio noise filter (FR-BIF (-H)

option) with the power line of the servo motor.

When using the regenerative resistor, switch power off with the alarm signal.

Otherwise, a transistor fault or the like may overheat the regenerative resistor,

causing a fire.

Do not modify the equipment.

During power-on, do not open or close the motor power line. Otherwise, a

malfunction or faulty may occur.