Mitsubishi Electric MELDAS C6 Interface Manual page 160

B con-
Signal name
tact
POSITION LOOP
—
IN-POSITION
[Function]
If the spindle controller is connected with high-speed serial connection, this signal will inform that
the spindle is in the in-position state during synchronous tap.
[Operation]
The signal will turn ON when:
(1) The droop amount (servo tracking delay error) is within the in-position range during
synchronous tap control (servo ON).
(2) Synchronous tap control is not commanded. ( A in following drawing)
The signal will turn OFF when:
(1) The droop amount (servo tracking delay error) has exceeded the in-position range during
synchronous tap control (servo ON).
Motor speed
Servo-on command
Position loop
in-position
B con-
Signal name
tact
—
TORQUE LIMIT
[Function]
This signal is output from the high-speed serial connection specification spindle controller (spindle
drive) and informs that the spindle is in position under C-axis control or synchronous tap control.
[Operation]
The "STLQ" signal turns ON when:
(1) "Torque limit 1" signal (TL1) or "Torque limit 2" signal (TL2) is ON.
The "STLQ" signal turns OFF when:
(1) "Torque limit 1" signal (TL1) and "Torque limit 2" signal (TL2) are both OFF.
(Note 1) This signal is valid only for the system that is high-speed serially connected with the spindle
controller.
[Related signals]
Torque limit 1 signal (TL1: YD3A)
Torque limit 2 signal (TL2: YD3B)
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
SINP
Forward run
A
Signal
abbreviation
STLQ
6-1-71
1st spindle 2nd spindle
X99E X9CE
Reverse run
1st spindle 2nd spindle
X99F X9CF
3rd spindle
X9FE
A
3rd spindle
X9FF