motor's dynamic braking resistor and may result in accidents. Failure to
follow this may cause fire or burns.
5. Never use products with voltages exceeding their specified input voltage
range. Failure to follow this may cause component failures or product
damage. Failure to follow this may cause product damage or injury.
6. Do not turn power on and off frequently. Turning power on and off more
than 30 times a day or 5 times in an hour may cause premature failures
of internal components.
Maintenance and Inspection
7. Do not disassemble or repair products by yourself. Failure to follow this
may cause fire or electric shock.
8. Do not perform measurements of insulation resistance or dielectric volt-
age. Failure to follow this may cause product damage.
9. Never plug or unplug connectors while power is on (hot swapping) as the
resulting surge voltage may cause electronic component malfunctions.
Failure to follow this may cause electric shock or product damage.
10. Do not remove the product name plate.
MANDATORY
Storage
1. Store products where they are not exposed to direct sunlight, within the
specified temperature and humidity ranges of -20 to +65°C, below 90%
RH (non-condensing). Failure to follow this may cause malfunctions.
2. When you use servo amplifiers after a long-term storage (3 years or lon-
ger), contact us. The capacitance of electrolytic capacitors can decrease
through long-term storage, which may cause malfunctions.
3. When you use servo motors after a long-term storage (3 years or longer),
contact us. Checking on bearings and brakes will be needed.
Transportation
4. Follow the instructions written on the package box and avoid excessively
stacking boxes. Failure to do so may cause injury.
5. Use the included eyebolts for transporting servo motors. Do not use
them for transporting machines in which servo motors are used. Failure
to follow this may cause injury or product failures.
Wiring
6. Install an external emergency stop circuit that can stop machinery and
cut off power instantly. Also, prepare an external protective circuit to the
amplifier to cut off the main circuit power in the event of an alarm. Failure
to follow this may cause injury, fire, motor runaway, motor burnout, or
secondary damage.
Control and Operations
7. Protection devices are not supplied with servo motors. Prepare an over-
voltage protection device, earth leakage breaker, overheat protection
device, and emergency stop device to ensure safe operation. Failure to
follow this may cause injury or fire.
8. Use products within the specified temperature and humidity ranges.
For servo amplifiers... Temperature: 0 to 55°C; humidity: 90% RH or less
(non-condensing)
For servo motors... Temperature: 0 to 40°C; humidity: 90% RH or less
(non-condensing)
Failure to follow this may cause burnout or malfunction.
Disposal
9.
Dispose of servo amplifiers and servo motors as industrial waste.
Table 1
Servo amplifier model no.
Power source Circuit classification Circuit type
Conversion coefficient Ki
RS3C02
□□
RS3C05
□□
RS3C10
□□
RS3C15
□□
RS3C30
□□
RS3PAC550
(Power supply unit for RS3D80
□□
)
3-phase
3
3-phase bridge
(Capacitor
smoothing)
3-1
6-pulse converter
with no reactor
K31 = 3.4
3-2
6-pulse converter
with reactor (AC
side)
K32 = 1.8
References
• Guidelines of Harmonics Reduction for Consumers of High or Ultra-High Voltage Power (September 1994)
Japan Ministry of International Trade and Industry (current Japan Ministry of Economy, Trade and Industry)
• Technical Guidelines for Suppressing Harmonics" (JEAG 9702-2013), The Japan Electric Association
• Measures for Suppressing Servo Amplifier Harmonics (February 2015), Japan Electrical Manufacturers Association
• How to Calculate Harmonic Current of Servo Amplifiers for Specific Power Consumers (JEM-TR225), Japan Electrical Manufacturers Association
• Guideline for Suppressing Servo Amplifier (input current 20 A or less) Harmonics (JEM-TR227)
General Incorporated Association The Japan Electri-
cal Manufacturers Association (JEMA)
Harmonic Suppression Measures Guidelines
Harmonic current generated by equipment such as servo amplifiers can po-
tentially have adverse impact on other power consumers, if it flows out. For
this reason, the Guidelines of Harmonics Reduction for Consumers of High
or Ultra-High Voltage Power (September 1994) was established by Japan
Ministry of International Trade and Industry (current Japan Ministry of Econ-
omy, Trade and Industry).
Servo amplifiers used by specific power consumers fall in the category of
"harmonic wave generating devices" that are subject to these guidelines.
Those power consumers who are subject to these guidelines must deter-
mine whether or not any measures for harmonics suppression are required
and if so, the measures must be implemented to ensure that the harmonic
current emissions are within the limit values stipulated by the contract de-
mand.
Implementation of harmonic suppression measures are recommended to
prevent impediments arising from harmonics, even for users not subject to
the guidelines.
Our servo amplifiers are equivalent to the circuit classification shown in Table 1
of the Application Guide for Evaluation of Harmonic Currents Emitted by Con-
sumers of Middle- or High-Voltage Power Supply .
Refer to the document described below for calculation method of harmonic
currents.
How to Calculate Harmonic Current of Servo Amplifiers for Specific Power
Consumers (JEM-TR225), Japan Electrical Manufacturers Association
Determine whether or not any harmonics suppression measures are re-
quired on the converter (AC-DC converter) side if the servo amplifier has a
DC input power supply of DC type.
When countermeasures must be implemented for harmonic suppression of
servo amplifiers, connect a harmonic suppression reactor.
Contact us for the harmonic suppression reactor.
Commercial
power
supply
AC reactor
Servo amplifier
Servo
motor
M
127
