Sunx SF4B 01 Series, Instruction Manual

Page: 16 / 102

SUNX Limited MJE-SF4B01 No.0005-03V
- 16 -
[For use in Europe (EU) (as EN 999)] (Also applicable to ISO 13855)
(For intrusion direction perpendicular to the sensing area)
<In case that the minimum sensing object is ø40mm or less>
Equation 1 S = K x T + C
S : Safety distance (mm)
Minimum required distance between the sensing area surface and the dangerous
parts of the machine
K : Intrusion velocity of operator’s body or object (mm/s)
Taken as 2,000 (mm/s) for calculation
T : Response time of total equipment (s)
T = T
m
+ T
SF4B01
T
m
: Maximum halting time of device (s)
T
SF4B01
: Response time of this device (s)
C : Additional distance calculated from the size of the minimum sensing object of
the sensor (mm)
However, the value of C cannot be 0 or less.
C = 8 x (d - 14)
d: Minimum sensing object diameter (mm)
<Reference>
For calculating the safety distance S, there are the following five cases.
First calculate by substituting the value K = 2,000 (mm/s) in the equation above. Then, classify the obtained
value of S into three cases, 1) S < 100, 2) 100 S 500, and 3) S > 500.
For Case 3) S > 500, recalculate by substituting the value K = 1,600 (mm/s). After that, classify the calculation
result into two cases, 4) S 500 and 5) S > 500. For details, refer to ‘
Calculation Example 1 For use in
Europe ’.
For calculating T
m
(maximum halt time of the device), use a special device called a ‘brake monitor’.
When this device is used in the ‘PSDI Mode’, an appropriate safety distance S must be calculated.
For details, be sure to refer to the standards or regulations applicable in each region or country.
<In the case the minimum sensing object is ø40mm or less>
Equation S = K x T + C
S : Safety distance (mm)
K : Intrusion velocity of operator’s body or object (mm/s)
Taken as 1,600 (mm/s) for calculation
T : Response time of total equipment (s)
T = T
m
+ T
SF4B01
T
m
: Maximum halting time of device (s)
T
SF4B01
: Response time of this device (s)
C : Additional distance calculated from the size of the minimum sensing object of
the sensor (mm)
C = 850 (mm)