Operating Instructions
Modular Safety Control System MSC
14
(Translation of the original operating instructions) 2121331-04-04/19
5.2. Calculation of the safety distance for an item of ESPE connected to the MSC system
All electro-sensitive protective equipment that is connected to the MSC system must be arranged at a distance that is at
least the minimum safety distance
S such that the danger zone can only be reached after the machine's hazardous move-
ment has stopped.
WARNING
Ì
The European standard:
ISO 13855:2010- (EN 999:2008) Safety of machinery. Positioning of protective equipment with
respect to the approach speeds of parts of the human body* contains formulas for the calculation
of the correct safety distance.
Ì
Specific information in relation to the correct arrangement can be found in the installation instruc-
tions for each item of protective equipment.
Ì
It is to be noted that the total reaction time is dependent on:
Reaction time of MSC + reaction time of ESPE + reaction time of machine in seconds (i.e. the time
the machine requires to stop the hazardous movement from when the stop signal is sent).
* A procedure is described that permits system planners to determine the minimum safety distance between protective equipment, in particular ESPE
(e.g. light grids), safety mats or pressure-sensitive floors and two-hand controls, and a specific danger zone. It contains a rule for the arrangement
of protective equipment based on the approach speed and time taken by the machine to stop, where corresponding extrapolation is possible, such
that interlocking devices without guard locking are also included.
5.3. Electrical connections
Figure 2:
MSC terminal blocks
The modules of the MSC system are equipped with terminal blocks for the
electrical connections. Each module can have 8, 16 or 24 terminals.
Each module also has an MSCB plug connector on the rear (for the commu-
nication with the base unit and the other extension modules).
Important!
Tightening torque for terminals: 0.6 – 0.7 Nm
WARNING
Ì
Install safety modules in a housing that meets degree of protection IP54 as a minimum.
Ì
Connect module in electrically isolated state.
Ì
The power supply for the modules must be 24 VDC ± 20 % (PELV, as per EN 60204-1 (chapter
6.4)).
Ì
MSC is not allowed to be used to supply external devices.
Ì
The same ground connection (0 VDC) is to be used for all system components.
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