power automation PA 8000 LW Series, Installation Instructions Manual, Page: 77 / 132

The second relay is called "CNC ready" and switches when the fol-
lowing conditions are met:
n The control unit is ready when:
–
The watchdog is re-triggered.
The software is monitored and works properly.
– All encoder signals of the axes are correct.
– All axes position loops are under control.
n The RMS power supply voltage is within operation range.
n The operating temperature is below +55°C (+131°F).
Logic Condition Result
+ 5 V RMS OK Ready relay active
AND Control unit ready
AND T < 55 °C (131 °F)
Damage to the machine!
If the "CNC ready" relay is not wired properly to the machine's
emergency stop circuit, the machine may be damaged upon oper-
ation.
n Ensure that the "CNC ready" relay is wired properly to the
machine's emergency stop circuit.
Relay 2 "CNC ready"
NOTICE
PA 8000 LW CNC control unit
Design and function
25.09.2015 | 77