The first relay is called "Power ok" and switches when the following
conditions are met:
n The power supply voltages are in operating range.
n The operating temperature is below +60 °C (+140 °F)
Logic Condition Result
+ 5 V OK Ready relay
active
AND + 12 V OK
AND - 12 V OK
AND T < 60 °C (140 °F)
NOTICE!
Damage to the control unit!
Voltage faults and/or temperatures above the allowed
specification can cause damage to the control unit.
Properly wire the "Power ok" relay to protect the con-
trol unit from damaging voltages and temperatures.
Relay 1 "Power ok"
PA 8000 EL CNC control unit
Design and function
24.09.2015 | 57
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