Yaskawa PC NC - Manual (Page 20)

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YASNAC PCNC Operating Manual Chapter 1: Outline of YASNAC System
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 PCNC is shut OFF and dynamic brake is applied to stop all
mechanical movement. In the emergency stop state, the PCNC is in the alarm state “3002”. If the
emergency stop signal is “opened”, the PCNC 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.
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 1.3. In response to this input, the alarm output (ALM) is “closed” and the corresponding
alarm message is displayed on the screen.
* Normally closed contact
If the overtravel input is “opened”, select the manual mode (jog, pulse handle) and move the axis
in the direction opposite to the direction for which the overtravel input is “opened” to “close” the
input. After that press the [RESET] key on the NC operation panel, the alarm output and display
are canceled.
Table 1.2.1.1: Emergency Related Signals
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
Table 1.2.2.1: Axis Stop Direction with Overtravel Input “Opened”
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.
PCNC