NSK Megatorque PS Series, User Manual, Page: 64 / 370

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3.4.3. Polarity Setting of Control Input Port
(Normally Open Contact and Normally Closed Contact)
The shipping set of the inputs EMST, OTP, and OTM of the CN2 connector is the normally
closed contact. The following show how to change the polarity of the above inputs to the
normally open contact.
！
Caution :You cannot change the polarity of a control input port when the Motor
servo is on. Be sure the servo is off when changing the polarity.
◊
Input the command MO (Motor off) to turn the Motor servo off.
O
ENT
M : MO
:_
The following describe how to change the polarity of EMST input to the normally open contact.
(1) Input the command PI0.
: PI0
FNEMST;
I
ENT
0
?
P
(2) Following the indication of the command FN (Input function), an input of the space key
will show the NW (Anti-chattering timer) and the AB (Input polarity), and the
prompt “? “ will appear.
FNEMST;
AB1;
NW0.2
?_
SP SP
(3) Input the command AB0. Input “ENT” after the prompt “?”.
? AB0
?
:
ENT
B A
ENT
0
?
Thus the input EMST (Emergency stop) has been changed to the normally open contact.
(4) Turn on the Motor servo on by inputting the command SV (Servo-on).
: SV
:_
V S
ENT
Input the command PI2 to change the polarity of the input OTP (Travel limit, + direction) to the
normally open contact, and then follow the same procedures above.
Input the command PI3 to change the polarity of the input OTM (Travel limit, - direction) to the
normally open contact, and then follow the same procedures above.