Mitsubishi Electric MELDAS C6 Interface Manual page 152

B con-
Signal name
tact
—
IN SPINDLE ALARM
[Function]
This signal is output from the high-speed serial connection specification spindle controller (spindle
drive) and informs that failure occurs in spindle controller.
[Operation]
The signal turns ON if alarm which occurs in the spindle controller is detected.
To cancel alarm, reset the controller (by reset & rewind), turn the controller power OFF or turn the
spindle controller power supply OFF. Note that reset method depends on type of alarm.
Typical examples of alarm are listed below. For details of alarm (contents and cancel procedures)
and reset methods, refer to the Spindle Controller specifications and maintenance manual.
(1) Overcurrent
(2) Breaker trip
(3) Motor overheat
(Note 1) This signal is valid only for the system that is high-speed serially connected with the
spindle controller.
B con-
Signal name
tact
—
SPINDLE ZERO SPEED
[Function]
This signal is output from the high-speed serial connection specification spindle controller (spindle
drive) and informs that motor speed has dropped below the set speed level.
[Operation]
This signal turns ON when the actual spindle motor speed drops below the speed set in the spindle
parameter #3218 (zero speed detection speed).
Spindle motor speed
Spindle zero speed (ZS0)
(Note 1) The signal is output, no matter whether direction of rotation is forward (SRN) or reverse
(SRI).
(Note 2) Minimum output pulse width of the signal is about 200ms.
(Note 3) Speed at which the signal is output can be set within range from 1r/min to 1000r/min with
the spindle parameters.
(Note 4) This signal is valid only for the system that is high-speed serially connected with the
spindle controller.
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
FLO
Signal
abbreviation
ZSO
6-1-63
1st spindle 2nd spindle
X993 X9C3
1st spindle 2nd spindle
X994 X9C4
Zero speed detect range
3rd spindle
X9F3
3rd spindle
X9F4