MITSUBISHI ELECTRIC Merservo MR-J2S- B - Manual (Page 71)

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3. SIGNALS AND WIRING
(2) Connection
(a) When the cable is inserted directly
Insert the cable to the end pressing the button with a small flat-blade screwdriver or the like.
Button
Small flat blade
screwdriver or the like
Twisted wire
When removing the short-circuit bar
from across P-D, press the buttons
of P and D alternately pulling the
short-circuit bar. For the installation,
insert the bar straight to the end.
(b) When the twisted wires are put together using a bar terminal
Insert a bar terminal with the odd-shaped side of the pressured terminal on the button side.
Bar terminal for one
wire or solid wire
Bar terminal for two wires
When two cables are inserted into one opening, a bar terminal for 2 cables is required.