Siemens SINUMERIK 840DE SL - Page 132

Conditional rated short-circuit current 1000 A, 6A gL/gG according to EN
60947-5-1
B
10d
(if no PN terminal box used) 100 000
When the PN Plus connection box is used:
PFH
d
1.01 * 10
-7
Service life 20 years
Forced dormant error detection interval (mechanical actua‐
tion to the test the emergency stop)
1 year
Category 3
Performance Level PL d
Note
The quantitative assessment of the emergency stop safety function must be based on the B
10d
value corresponding to the used standards (e.g. ISO 13849-1) under consideration of the
respective application (frequency of the actuation, service life, diagnostics by the evaluation
unit, etc.). The B
10d
value only applies when the technical properties of the emergency stop
button are taken into account.
When using the PN Plus terminal box, the speci󹪝ed failure probability (PFH
d
) must be taken into
account. This value only applies when the technical properties of the PN Plus terminal box and
the quantitative conditions speci󹪝ed here (e.g. service life) are observed.
Enabling button
 2-circuit , 3-stage
Supply voltage 24 V DC
Current rating, max.: 250mA
Current rating, min.: 0 A
Operating cycles Switch position 2 10
5
Switch position 3 5 * 10
4
Actuation forces From switch position 1 to 2, typically 3 N
From switch position 2 to 3, typically 17 N
Functional safety
EN ISO 13849-1:2015 Category 4
Performance Level (PL) PL e
Proof test interval (operating duration) 20 years
EN 61508 Safety Integrity Level (SIL) SIL 3
PFH
d
5.07 * 10
-9
Forced dormant error detection interval (mechanical actuation to the
test the enable and panic position)
1 year
Technical speci󹪝cations
10.1Handheld Terminal HT 8
Handheld Terminal HT 8
132 Equipment Manual, 02/2024, A5E52918633B AA