Pilz PNOZ s4 C 48-240VACDC 3 n/o 1 n/c - Manual (Page 12)

PNOZ s4
Operating Manual PNOZ s4
21396­EN­13 12
Fault
Diagnostics: Internal error, unit defective
} Remedy: Switch supply voltage off and then on again, change unit if neces­
sary.
Power
Diagnostics: Supply voltage too low
} Remedy: Check the supply voltage.
In1, In2 alternately
Fault
Diagnostics: Short detected between S12 and S22
} Remedy: Rectify short across contacts, switch supply voltage off and then
on again.
In1
Fault
Diagnostics: Power­up blocked due to short­term interruption at S12; input cir­
cuits not operated simultaneously
} Remedy: Open both input circuits, S12 and S22, simultaneously and then
close again.
In2
Fault
Diagnostics: Power­up blocked due to short­term interruption at S22; input cir­
cuits not operated simultaneously
} Remedy: Open both input circuits, S12 and S22, simultaneously and then
close again.
Reset
Fault
Diagnostics: Position of rotary switch is not permitted or rotary switch was ad­
justed during operation.
} Remedy: Switch supply voltage off and then on again.