
Operating Instructions FT 3000 JAQUET AG
377E-63917 Rev 4.00
page
5 of 47
1 The Redundant Over Speed Protection Concept :
Speed
Measurement
1
Speed
Measurement
2
Speed
Measurement
3
PSU 1
PSU 2
2 of 3
Module
commissio
ning
Customer specific control logic, 1/3, 2/3
…
Secure monitoring
even if modules are
exchanged during
operation
1. Measurement
Protection
Safety
Availability
3. Measurement
Protection
Safety
Availability
2. Measurement
Protection
Safety
Availability
OUTPUT CONTACTS
Secure supply via
redundant PSU’s
allowing exchange
during operation
FT 3000