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CONFORMANCE WITH UL/C-UL STANDARD
(1) Servo amplifiers and servo motors used
Use the servo amplifiers and servo motors which comply with the standard model.
Servo amplifier :MR-J2S-10B to MR-J2S-700B
MR-J2S-10B1 to MR-J2S-40B1
Servo motor :HC-KFS
HC-MFS
HC-SFS
HC-RFS
HC-UFS
(2) Installation
Install a fan of 100CFM air flow 10.16 cm (4 in) above the servo amplifier or provide cooling of at least
equivalent capability.
(3) Short circuit rating
This servo amplifier 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, the servo
amplifier 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
10 minutes after power-off.
Servo amplifier
Discharge time
[min]
MR-J2S-10B(1) 20B(1) 1
MR-J2S-40B(1) 60B 2
MR-J2S-70B to 350B 3
MR-J2S-500B 700B 5
(5) Options and auxiliary equipment
Use UL/C-UL standard-compliant products.
<<About the manuals>>
This Instruction Manual and the MELSERVO Servo Motor Instruction Manual are required if you use
the General-Purpose AC servo MR-J2S-B for the first time. Always purchase them and use the MR-
J2S-B safely.
Also read the manual of the servo system controller.
Relevant manuals
Manual name Manual No.
MELSERVO-J2-Super Series To Use the AC Servo Safely
(Packed with the servo amplifier)
IB(NA)0300010
MELSERVO Servo Motor Instruction Manual SH(NA)3181
EMC Installation Guidelines IB(NA)67310