1. FUNCTIONS AND CONFIGURATION 
1 -  28 
 
(f) MR-J4-22KA4(-RJ) 
 
POINT 
 
The servo amplifier is shown without the front cover. For removal of the front 
cover, refer to section 1.7.2. 
 
 
No. Name/Application 
Detailed 
explanation
(1) 
Power factor improving reactor terminal block 
(TE1-2) 
Used to connect a power factor improving DC 
reactor and a regenerative option. 
(2) 
Main circuit terminal block (TE1-1) 
Used to connect the input power supply and servo 
motor. 
(3) 
Control circuit terminal block (TE2) 
Used to connect the control circuit power supply. 
(4) 
Protective earth (PE) terminal 
Grounding terminal 
Section 3.1
Section 3.3
(5) 
Battery holder 
Install the battery for absolute position data 
backup. 
Section 12.2
(6)  Rating plate  Section 1.6
(7) 
Charge lamp 
When the main circuit is charged, this will light. 
While this lamp is lit, do not reconnect the cables. 
 
(7)
(6)
(5)
(Note)
(2)
(3)
(4)
(1)
The broken line area is the same as
MR-J4-200A4(-RJ) or less.
 
   
 
Note. Lines for slots around the battery holder are omitted from the illustration.