schmersal PSC1 Series Installation Manual page 56

Installation manual
Encoder A Encoder B
SSI Resolver
SSI SSI
NC SIN/COS
NC Resolver
2 x Counter Proxy
SSI
90°
A fault exclusion can be made for the mechanical connection with the note "... only positive connections are permitted for the shaft-hub connection of the
encoder axis. Alternatively, other connection forms can be used if they meet the safety requirements. For their reliability in relation to the desired level of
safety, comprehensible evidence must be provided in any case (e.g. oversizing with a form-fitting shaft-hub connection). The corresponding information on
fault exclusion in the standard EN / IEC 61800-5-2, Appendix D.3.16 (Table D.8) must be observed. "
With SIN/COS encoders suitable for safety applications a DC of 90% can be assumed for the single channel transmit LED.
**) The code disk / shaft connection and the sensor body must be analysed in detail. For a possible fault exclusion, the relevant information in the standard
EN / IEC 61800-5-2, Appendix D.3.16 (table D.8) must be observed.
***) For the speed measurement using the Proxy, the actuator and the fastening of the Proxy must be analyzed with regard to their reliability. The relevant
information in standard EN / IEC 61800-5-2, Appendix D.3.16 (Table D.8) must be applied accordingly to exclude a possible fault.
Other single-channel parts for which the 60% apply:
Power supply
Code disk attachment
Mechanics of the opto-receiver (not SIN/COS)
Code disk
PSC1-C-10 Installation manual V2.7
Version: 57E
Safe
Safe Safe
absolute
velocity direction
position
X X X
X X X
X X
X X
X X X
Fault exclusion 1-cahnnel
sub-system
n.a.
n.a.
*)
Mech. Encoder mounting 60% /
**)
Code disc mounting 90%
*)
Mech. Encoder mounting 60 /
**)
Code disc mounting 90%
n.a.
Page 56 of 174
DC
2-channel
2-channel sub-system
sub-system
non-dynamic
dynamic
(Stand-still monitoring)
99%
99%
99%
*) **)
99%
*) **)
99%
95-99%
90-95%
90-95%
90-95%
90-95%