Operation
Operating Manual PNOZ ms2p TTL
1001722-EN-03
28
7.2
Signal statuses
Encoder
inputs***)
Outputs
Diagnostic word
****)
Status
Meaning
Incremental encoder track A
Incremental encoder track B
Proximity switch
Standstill
Overspeed, no error on the speed monitor
Bit 9: Proximity switch fault
Bit 9: Incremental encoder fault
Bit 10: Frequency difference track AB
Entry in error stack
A Standstill, no fault
0
0
0
1
1
0
0
0
0
B1
*)
Standstill, fault at proximity switch
0
0
1
1
1
0
1
0
0
B2
*)
Broken shearpin
0
0
1
0
0
0
1
0
1
C Standstill, unwanted signal change, track A
0
1
0
1
1
0
0
0
0
D Rotating shaft, fault, track A
0
1
1
0
0/1 **)
0
0
1
1
E Standstill, unwanted signal change, track B
1
0
0
1
1
0
0
0
0
F Rotating shaft, fault, track B
1
0
1
0
0/1 **)
0
0
1
1
G Rotating shaft, fault at proximity switch
1
1
0
0
0/1 **)
1
0
0
1
H Rotating shaft, no fault
1
1
1
0
0/1 **)
0
0
0
0
*) The status B then only leads to a safe shut down when the option "broken shearpin mon-
itoring" is activated (B2). If the option is not activated (B1), then only the bit 9 of the dia-
gnostic word is set.
**) The output speed is "1" when the configured overspeed is not exceeded.
***) Input = 1: Speed monitor detects impulses
Input = 0: Speed monitor detects no impulses
****) For explanations on the diagnostic word of the speed monitor, see online help for the
PNOZmulti Configurator
7.3
Faults - malfunctions
Monitoring the direction of rotation: If an internal error occurs or there is an error due to a
defective incremental encoder ("FAULT" LED illuminates or flashes), an incorrect direction
of rotation may be signalled for approx. 500 ms.