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Data Sheet

Safety-Rated Encoder AK0H Functional Safety for CMP Synchronous ServomotorsCMP40 – CMP100CMPZ71 – CMPZ100

Edition 10/2011 19383614 / EN

2 Safety-Rated Encoder AK0H – Synchronous Servomotors CMP40-100, CMPZ71-100

1 Characteristic safety values for AK0H encodersData Sheet

1 Data Sheet

1.1 Characteristic safety values for AK0H encodersThe following table shows the characteristic safety values of the safety-rated AK0H en-coders:

INFORMATIONThis data sheet does not replace the following applicable documents:• "Synchronous Servomotors CMP40 – CMP100, CMPZ71 – CMPZ100" operating

instructions• "Safety-Rated Encoders – Functional Safety for Synchronous Servomotors

CMP40 – CMP100, CMPZ71 – CMPZ100" addendum to the operating instructions

Characteristic values according to

EN 62061 / IEC 61508 EN ISO 13849-1

Classification/underlying standards SIL2 according to EN 62061 PL d according to EN ISO 13849-1

Structure HFT = 1 2 channels (corresponds to category 3 according to EN ISO 13849-1)

Probability of a dangerous failure per hour (PFHd value)1) 1.3 × 10-8 1/h

Mean time to dangerous failure (MTTFd value)2) - 100 years

Mission time / service life 20 years

Proof test interval Not required -

Safe fault coverage (SSF) 95 % -

Motor/encoder connection In the drive with FS identification, exclusion of errors according to EN ISO 13849

1) The specified value refers to a diagnostics coverage of 90% that must be achieved by an encoder evaluation unit. Diagnostics mustbe performed within the process response time.

2) Ambient temperature 40 °C

Pi

fkVA

Hz

n