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7
2114575-06-02/21 (translation of the original operating instructions)
Operating Instructions Safety Systems
MGB-L..B-PN.-… (PROFINET) and With Data Structure Type A
EN
3. Description of the safety function
Devices from this series feature the following safety functions:
The following applies in case of active guard lock monitoring (ÜK, bit SI 10 ):
Monitoring of guard locking and the position of the guard
(interlocking device with guard locking according to EN ISO 14119)
Ì Safety function (see chapter 6. Function on page 10 ):
-When guard locking is released, safety bit SI 10 (ÜK) = 0 (monitoring of the locking element).
-When the guard is open, safety bit SI 9 (SK) = 0.
-Guard locking can be activated only when the bolt tongue is located in the locking module (prevention of inadvertent
locking position (faulty closure protection)).
Ì Safety characteristics: category, Performance Level, PFH
D
(see chapter 18. Technical data on page 34 ).
Control of guard locking (safety bit
SO 1
)
Ì Safety function
If the device is used as guard locking for personnel protection, control of guard locking must be regarded as a safety
function.
The safety level of guard locking control is determined by the device PFHD
int.
and by the external control (e.g. PFHD
ext.
of the standstill monitor).
PFHd
ext.
PFHd
int.
(internal electronic)
Guardlocking Device
MGB-PN
(e.g. standstill
monitor)
Safetybit SO 1
(Guardlocking)
Ì Safety characteristics: category, Performance Level, PFH
D
(see chapter 18. Technical data on page 34 ).
The following applies in case of inactive guard lock monitoring (ÜK, bit SI 10 ):
Monitoring of the guard position
(interlocking device according to EN ISO 14119)
Ì Safety function: when the guard is open, safety bit SI 10 (SK) = 0. (See chapter 6. Function on page 10 .)
Ì Safety characteristics: category, Performance Level, PFH
D
(see chapter 18. Technical data on page 34 ).