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APPENDIX
(3) USA/Canada compliance
This servo amplifier is designed in compliance with UL 508C and CSA C22.2 No.14.
(a) Installation
The minimum cabinet size is 150% of each MR-J4 servo amplifier's volume. Also, design the cabinet
so that the ambient temperature in the cabinet is 55 °C or less. The servo amplifier must be installed
in the metal cabinet. Additionally, mount the servo amplifier on a cabinet that the protective earth
based on the standard of IEC/EN 60204-1 is correctly connected. For environment, the units should
be used in open type (UL 50) and overvoltage category shown in table in app. 4.8.1. The servo
amplifier needs to be installed at or below of pollution degree 2. For connection, use copper wires.
(b) 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.
(c) 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.)
(d) 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 app. 4.4 for the proper connection.
(e) 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.
(4) South Korea compliance
This product complies with the Radio Wave Law (KC mark). Please note the following to use the
product.
이 기기는 업무용 (A급) 전자파적합기기로서 판 매자 또는 사용자는 이 점을 주의하시기 바라며,
가정외의 지역에서 사용하는 것을 목적으 로 합니다.
(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-J4-22KTM(4).
App. 4.2.4 General cautions for safety protection and protective measures
Observe the following items to ensure proper use of the MELSERVO MR-J4 servo amplifiers.
(1) For safety components and installing systems, only qualified personnel and professional engineers
should perform.
(2) When mounting, installing, and using the MELSERVO MR-J4 servo amplifier, always observe standards
and directives applicable in the country.
(3) The item about noises of the test notices in the manuals should be observed.
App. - 13
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