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APPENDIX
(2) Installation
The MR-J4 series have been approved as the products which have been installed in a cabinet. The
minimum cabinet size is based on 150% of each MR-J4 combination. And 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.
To ensure safety, do not touch the charging section for 15 minutes after power-off.
(3) Short Circuit Current Rating (SCCR)
We confirmed in the short-circuit test that this servo amplifier is suitable for use in a circuit rated at 100
kA RMS or less, and maximum voltage 500 V.
(4) Overload protection characteristics
Servo amplifier MR-J4 series has solid-state servo motor overload protection. (It is set on the basis (full
load current) of 120% rated current of the servo amplifier.)
(5) Selection example of wires
To comply with the UL/CSA standard, use UL-approved copper wires rated at 75 C for wiring.
The following table shows the wire sizes [AWG] and the crimping terminal symbols rated at 75 C.
Servo amplifier
MR-J4-10A/MR-J4-20A/
MR-J4-40A/MR-J4-60A/
MR-J4-70A/MR-J4-100A
MR-J4-200A
MR-J4-350A
(Note 1) MR-J4-500A
(Note 1) MR-J4-700A
Note 1.
To connect these models to a terminal block, be sure to use the screws that come with the terminal block.
2.
Alphabets in the table indicate crimping tools. Refer to the following table for the crimping terminals and crimping tools.
3.
The wire size depends on the servo motor characteristics.
(Note 1) Ambient
temperature
Ambient humidity
Altitude
Ambient temperature is the internal temperature of the cabinet.
Note 1.
2.
The servo amplifier of under 3.5 kW for 200 V class can be mounted closely. In this
case, keep the ambient temperature within 0 C to 45 C or use the servo amplifier
with 75% or less of the effective load ratio.
L1/L2/L3/
L11/L21
14
12
10
8: a
8: b
App. - 7
Item
Operation
Storage/transportation
Operation/storage/transportation
Operation/storage
Transportation
(Note 2) Wires [AWG]
P+/C/D
14
14: c
14: c
12: a
Environment
(Note 2) 0 C to 55 C
(non-freezing)
-20 C to 65 C (non-freezing)
90% RH or less (non-condensing)
1000 m or shorter
10000 m or shorter
U/V/W
14
(Note 3)
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