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CONFORMANCE WITH UL/C-UL STANDARD
The MELSERVO-J2M complies with UL508C.
(1) Unit and servo motors used
Use the each units and servo motors which comply with the standard model.
Interface unit :MR-J2M-P8A
Drive unit :MR-J2M-
DU
Base unit :MR-J2M-BU
Servo motor :HC-KFS
HC-MFS
HC-UFS
(2) Installation
Install a fan of 100CFM (2.8m
3
/min) air flow 4 [in] (10.16 [cm]) above the servo amplifier or provide
cooling of at least equivalent capability.
(3) Short circuit rating
MELSERVO-J2M conforms to the circuit whose peak current is limited to 5000A or less. Having been
subjected to the short-circuit tests of the UL in the alternating-current circuit, MELSERVO-J2M
conforms to the above circuit.
(4) Capacitor discharge time
The capacitor discharge time is as listed below. To ensure safety, do not touch the charging section for
15 minutes after power-off.
Base unit Discharge time [min]
MR-J2M-BU4 1
MR-J2M-BU6 1
MR-J2M-BU8 1
(5) Options and auxiliary equipment
Use UL/C-UL standard-compliant products.
(6) Attachment of a servo motor
For the flange size of the machine side where the servo motor is installed, refer to “CONFORMANCE
WITH UL/C-UL STANDARD” in the Servo Motor Instruction Manual.
(7) About wiring 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.