NSK MEGATORQUE MOTOR SYSTEM - Servo-on in the Maintenance Mode

3. Operation
— 3-2 —
◊ The ports assigned to the function of OTP/OTM (Over travel limit switch position) and HLS
(Home position limit switch) only take the input from the CN2 connector regardless the
operation mode.
 The output signals go to the both CN2 and CN6 connecotrs regardless the operation mode.
3.2. Change of Operation Mode
 The system starts with the fieldbus mode right after the power is turned on.
◊ When the system detects any abnormality related to the CC-Link, it starts up with the maintenance
mode.
 The command CP (Control mode priority) changes the operation mode.
Fig. 3-1: Switching the operation mode
S
NSK MEGATORQUE
SDC1A80_0009.0
SXSYS1006.2,XOP1
#
#
CP0
:
:
CP1
#
Changes to the field-bus mode by CP1
Fieldbus mode right after the power is turned on
Changes to the maintenance mode by the input of CP0
Maintenance mode
Field-bus mode
3.3. Servo-on in the Maintenance Mode
 It needs to activate the Input SVON (Servo on) to make the Motor servo on. This means the Input
SVON of the CN6 : Interface connector must be set to 1.
 The CC-Link network would not be ready yet while the total system is in the middle of starting-up.
In such a case, the Motor can be in the Servo-on state immediately by switching to the
maintenance mode from the operation mode to set the polarity of the Input SVON to a normally
closed conntact.
◊ The change to the maitenance mode makes the inputs of the CN2 connector effective. While no
port is assigned to the Input SVON for the CN2 connector, the SVON input is regarded always as
OFF. However, the reverse of the port polarity forcibly turns ON the Input SVON.
 The following describe how to make the Motor SVON effective by the forcible activation of the
Input SVON.
！
Danger ： Be sure to wire the Input EMST (Emergency stop) so that immediate
deactivation of the servo is possible.