上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
- 106 - Specialized, Concentrated, Focused
in [Port] screen under [System]
. If there is no color change, it indicates the software can‘t receive the
REF. point signal, needing to check if there is an error in the home switch (if the terminal board is
EX9A4 and EX24A2, the switch type should be NPN; if EX6A4, the switch type should be PNP) or in
the wiring of home switch. To see if the system failure occurs, make the REF. point signal on the
terminal board and COM port into conduction directly with a conducting wire, and then check
whether the color of the dot before ―× machine origin‖ changes in [Port] screen.
2) Check whether the position of home switch is appropriate to avoid the following three situations: the
distance between home switch and limit switch is too small; the home switch is installed behind the
limit switch; or the position of home switch is out of the mechanical stroke of machine tool.
When backing to the machine origin, the machine tool motions towards a certain direction at a
relatively low speed (ten percent of the speed of coarse positioning) until limit is triggered.
See if the polarity of ―× machine origin‖ input port is correct in [Port] screen under [System]. When
this home switch is triggered, i.e. there is signal input, the color of the dot should be green. Otherwise, it
is red.
A certain axis moves a very long distance or keeps moving at a rather low speed towards the
reverse direction after coarse positioning during backing to machine origin.
The cause of the above phenomenon is that the system can‘t detect the encoder REF. point signal
of this axis.
1) Move the machine manually and check if the encoder zero signal in [Port] activated;
2) See if the servo cable of this axis is well contacted at the joints with NK280 host and servo driver;
3) Check if there is an error in the driver, motor, encoder cable, servo cable or the CNCl system (e.g.
exchange servo cable and servo driver with those of other axes able to return to the machine origin
normally in turn).
5.3.5
What should users do if the machine tool motions upward
after arriving at the position of tool presetter during
calibration?
View and tell whether the polarity of ―tool presetter signal‖ is right in [Port] screen under [System].
The color of the dot before the ―tool presetter‖ signal is red when the system does not receive tool
presetter signal.
