ABB ACS880 Series, Руководство пользователя

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32 Technical data

Safety data values
Each multidrives delivery is unique. If included in the customer order, ABB calculates the
safety data for each POUS circuit of the multidrives delivery, and delivers the data
separately to the customer.
For the safety data of the FSO-12 module, see FSO-12 safety functions module user’s
manua l (3AXD50000015612 [English]).
For the safety data of the FSO-21 and FSE-31 modules, see FSO-21 safety functions
module user’s manual (3AXD50000015614 [English]).

Safety component types
Safety component types as defined in IEC 61508-2:
•
FSO module: type B
•
FSE module: type B
•
inverter unit STO circuit:
•
frame sizes R1...R9 and drives with R1i...R7i inverter modules: type A
•
frame sizes R10 and R11 and drives with R8i inverter modules: type B.

Safety block diagram
Each multidrives delivery is unique. If included in the customer order, ABB defines the
safety block diagram for each multidrives delivery, and delivers the diagram separately to
the customer.

Relevant failure modes
Relevant failure modes are:
•
the FSO module detects any open circuits and short circuits and redundancy failures
of the POUS input signal wirings. Similarly, it detects redundancy failures of the POUS
switch when the POUS request on.
•
internal failures of the FSO and FSE modules and the STO function in the inverter unit.
These failures are included in the failure rate value of the function.

Fault exclusions
Fault exclusions (not considered in the calculations):
•
any short and open circuits in the cables of the safety circuit
•
any short and open circuits in the cabinet terminal blocks of the safety circuits.

Operation delays
Total delay and fault reaction response time for the POUS function: less than 100 ms
(includes the response time of inverter unit STO).