Operating Manual Owner manual

Table Of Contents
7 ATEX
83
2013-04-01
structure. If only a passive sensor is connected, this corresponds to variant 1 of Table 1: "Achievable SIL" in Chapter 6.6 "Con-
nection possibilities of the sensors (SIL)". This version meets the requirements for IPL 1 and is marked with (b1) accordingly. EN
13463-6 requires that automatic restart of monitored apparatus must not take place without a reset of the JUMO safetyM STB/
STW Ex. For this reason, for application of the JUMO safetyM STB/STW Ex as STW, higher level control must be ensured so
that an automatic restart is not possible. In the case of application as STB, locking is integrated into the JUMO safetyM STB/
STW Ex.
The limit value must be determined according to the relevant use and/or application. The value must be set so that no danger-
ous state can occur when all relevant factors such as response time and, if applicable, temperature overshoot of the monitored
apparatus including the JUMO safetyM STB/STW Ex are taken into account.
To prevent unintended changes to the set parameters, there is an option to seal the JUMO safetyM STB/STW Ex according to
Chapter 5.8 of this Operating Manual or to use a keypad lock or level inhibit according to Chapter 8.4.
7.6.5 Application in the 2-sensor variant
If two passive sensors are connected, this corresponds to variants 1a, 2, 3, and 4 of Table 1: "Achievable SIL" in Chapter 6.6
"Connection possibilities of the sensors (SIL)". This version meets the requirements for IPL 2 and is marked with (b2) accord-
ingly. EN 13463-6 requires that automatic restart of monitored apparatus must not take place without a reset of the JUMO
safetyM STB/STW Ex. For this reason, for application of the JUMO safetyM STB/STW Ex as STW, higher level control must be
ensured so that an automatic restart is not possible. In the case of application as STB, locking is integrated into the JUMO
safetyM STB/STW Ex.
The limit value must be determined according to the relevant use and/or application. The value must be set so that no danger-
ous state can occur when all relevant factors such as response time and, if applicable, temperature overshoot of the monitored
apparatus including the JUMO safetyM STB/STW Ex are taken into account.
To prevent unintended changes to the set parameters, there is an option to seal the JUMO safetyM STB/STW Ex according to
Chapter 5.8 of this Operating Manual or to use a keypad lock or level inhibit according to Chapter 8.4.
7.6.6 Application of transmitters
The safety features for use of transmitters are described according to variant 5 in Table 1: "Achievable SIL" in Chapter 6.6
"Connection possibilities of the sensors (SIL)". The required features based on EN 13463-6 must be identified accordingly for