Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 578

• Short-circuit current rating (SCCR)
Suitable For Use On A Circuit Capable Of Delivering Not More Than 100 kA rms Symmetrical Amperes, 500 Volts Maximum
(Not More Than 5 kA rms Symmetrical Amperes, 48 Volts Maximum for MR-J4-03A6 and MR-J4W2-0303B6). For SCCR (25
kA or 50 kA) when using a Type E Combination motor controller, refer to the following.
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Page 404 Molded-case circuit breakers, fuses, magnetic contactors
• Overload protection characteristics
The MR-J4 servo amplifiers have solid-state servo motor overload protection. (It is set on the basis (full load current) of 120%
rated current of the servo amplifier.)
• Over-temperature protection for motor
Motor Over temperature sensing is not provided by the drive.
Integral thermal protection(s) is necessary for motor and refer to the following for the proper connection.
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Page 578 Electrical Installation and configuration diagram
• Branch circuit protection
For installation in United States, branch circuit protection must be provided, in accordance with the National Electrical Code
and any applicable local codes.
For installation in Canada, branch circuit protection must be provided, in accordance with the Canada Electrical Code and any
applicable provincial codes.
■South Korea compliance
This product complies with the Radio Wave Law (KC mark). Please note the following to use the product.
(The product is for business use (Class A) and meets the electromagnetic compatibility requirements. The seller and the user
must note the above point, and use the product in a place except for home.)
In addition, use an EMC filter, surge protector, ferrite core, and line noise filter on the primary side for inputs. Use a ferrite core
and line noise filter for outputs. Use a distance greater than 30 m between the product and third party sensitive radio
communications for an MR-J4-22K_(4).
General cautions for safety protection and protective measures
Observe the following items to ensure proper use of the MR-J4 servo amplifiers.
• For safety components and installing systems, only qualified personnel and professional engineers should perform.
• When mounting, installing, and using the MR-J4 servo amplifier, always observe standards and directives applicable in the
country.
• The item about noises of the test notices in the manuals should be observed.
Residual risk
• Be sure that all safety related switches, relays, sensors, etc., meet the required safety standards.
• Perform all risk assessments and safety level certification to the machine or the system as a whole.
• If the upper and lower power modules in the servo amplifier are shorted and damaged simultaneously, the servo motor may
make a half revolution at a maximum.
• Only qualified personnel are authorized to install, start-up, repair or service the machines in which these components are
installed. Only trained engineers should install and operate the equipment. (ISO 13849-1 Table F.1 No. 5)
• Separate the wiring for safety observation function from other signal wirings. (ISO 13849-1 Table F.1 No. 1)
• Protect the cables with appropriate ways (routing them in a cabinet, using a cable guard, etc.).
• Keep the required clearance/creepage distance depending on voltage you use.
APPX
576
Appendix 4 Compliance with global standards