Installation instructions
│
T24
│
Chapter 3: Functional safety
CHAPTER 3: FUNCTIONAL SAFETY
S top f u nction
The safety-related stop function in the radio system complies with
EN IEC
61508:2010 SIL3
and
EN ISO 13849-1:2015 PLe
category 3
. The stop relays on the
receiver unit are controlled by the stop button on the transmitter unit. When the
stop button is pressed, the stop relays interrupt the power to the safety-related
application. The complete end user system, including the radio system, enters a
safe state. The default response time for the stop function is 500 ms.
The stop function is supported by all receivers and transmitters in the Puma range.
Appl icabl e produ cts
The following receivers are
designed to comply with the appointed safety
requirements when used together with a T24 transmitter
:
l
R20, R21
Instal l ation
The two stop relays on the receiver unit shall be correctly installed to the end-user
system requirements.
NOTE: The safety level of the stop function on the complete end-user system
depends on other subsystem(s) and needs to be calculated by the manufacturer
of the complete system.
C onf igu ration
The default configuration of the receiver unit complies with the appointed safety
requirements. Configuration of the response time for the stop function (by default
500 ms) must be justified with a valid risk analysis in order to maintain the safety
levels.
Achieved perf ormance l evel (PL)
Safety function
MTTFd (years)
DCavg(%)
Category
Achieved PL
Stop function
100
99
3
e
IM-PM-TX101-EN-v08
15
