Yaskawa Yasnac PC NC - Manual (Page 18)

YASNAC PC NC Operating Manual Chapter 1: Outline of the YASNAC System
1 - 9
1.2 Protective Functions
1.2.1 Emergency Stop
Press the emergency stop button immediately if a problem occurs with the system or line. The
execution of all commands stops instantaneously when the emergency stop button is pressed.
Servo power supply of the PC NC is shut OFF and dynamic brake is applied to stop all mechani-
cal movement. In the emergency stop state, the PC NC is in the alarm state “3002”. If the emer-
gency stop signal is “opened”, the PC NC stops the entire operation, and the SVMX and BKX
signals are “opened”.
This operation is executed by setting the pins on the board. The pins differ between J300M
and J100M.
Table 1.2.1.1 Emergency Related Signals
1.2.2 Overtravel
The overtravel function stops axis feed operation when an axis reaches the travel limit; for the
detection of travel limit, a limit switch and a dog are used and if an axis reaches the travel limit,
the limit switch outputs a signal and the function stops axis feed operation in response to this
input. The axis reached and stopped at the travel limit can be moved manually into the axis mov-
able range.
When the overtravel input is “opened”, axis movement is stopped in the manner as indicated in
Table 1.2.2.1. In response to this input, the alarm output (ALM) is “closed” and the correspond-
ing alarm message is displayed on the screen.
Table 1.2.2.1 Axis Stop Direction with Overtravel Input “Opened”
* Normally closed contact
Signal Name Pin Setting
Emergency Stop Input CN12-19 pin on JZNC-JFC 10 board
SVMX CN12-17 pin on JZNC-JFC 10 board
BKX CN12-16 pin on JZNC-JFC 10 board
Manual Operation Mode Automatic Operation Mode
*+X to *+5
input is “opened”
Movement in the *+X to *+5
direction is stopped.
Movement of all axes is
stopped in all directions.
*-X to *-5
input is “opened”
Movement in the *-X to *-5
direction is stopped.
PC NC