HEIDENHAIN TNC 306 Service Manual - Manual (Page 90)

SERVICE MANUAL TNC 306/360
Page 83
HEIDENHAIN Service
17.4.1 Wiring of the EMERGENCY-STOP Interface
(Basic Circuit Diagram)
+24V
0V
X21/34
24V
LE 360/C
X24/1
X24/2
X22/4
24V_A PLC Power Supply
EXTERNAL
EMERGENCY
STOP
Control Voltage
Machine Tool
Limit Switch
INPUT: Acknowledgement
"Control Ready for Operation"
INTERNAL
EMERGENCY
STOP (blinking)
OUTPUT: "Control
Ready for Operation"
17.4.2 EMERGENCY-STOP Flow Diagram TNC 306/360
4 2 3 2 1
max 146 ms
CE
OUTPUT: Control
Ready for Operation
INPUT: Acknowledgement
"Control Ready for Operation"
Switch-off EMERGENCY
STOP Test
Control Ready for Operation
Time Remark Error Message
1 POWER INTERRUPTED
2 Waiting for control voltage RELAY EXT. DC VOLTAGE MISSING
3 After switching off the output
"Control Ready for Operation", the
acknowledgement "Control Ready
for Operation" must be switched
off within 146 ms; otherwise the
blinking error message is
generated. EMERGENY-STOP DEFECTIVE
4 If the acknowledgement is
switched off during operation, the
error message is displayed. EMERGENCY STOP