Wenglor SEFG Muting, Руководство по эксплуатации

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Project Engineering 42
Procedure when working with table 8.2.2:
Required b S  C
RO
a
Known a, S

C
RO
a, b S

C
RO
, b
1.
In the left column,
search the row with the
known value a
Select the next smallest
b -value
Select the next smallest
b -value
2.
In the relevant
row, search the column
with the next highest
value for C
RO
In the relevant
column, search the row
with the next highest
value for a
In the relevant
column, search the row
with the next lowest
value for C
RO
3.
At the bottom end
of the column, you will
find the relevant
value for b
At the point of intersec-
tion between row and
column, you will find the
value for C
RO
In this row, go to the left
column. Here, you will
find the value for a .
NOTE!
• If the actual values for a and b are between the values in the table, the next highest value
from the table must be selected.
• A top safety field edge of under 900 mm does not provide adequate protection against
bypassing or crossing over.
• A bottom safety field edge of over 300 mm does not provide adequate protection against
crawling through.
DANGER!
Risk of personal injury or property damage in case of non-compliance with the safety
field specifications!
The system’s safety function is disabled.
Personal injury and damage to equipment may occur.
• Observe the safety field specifications!
Sample calculation:
An ESPE with a resolution of 30 mm and a SFH of 1,500 mm (SEFG420) is to be used to safeguard the area.
The required safety clearance must be calculated.
• Response time of the ESPE t
1
= 16.2 ms
• Over-travel time of the safety switching device t
2
= 15 ms
• Machine over-travel time t
3
= 300 ms
• Resolution of the ESPE d = 30 mm
• Height of the danger zone a = 1,600 mm
• Reference height H = 100 mm
• Height of the safety field above ground b = 1,600 mm (SFH + H)