Protection Area
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
23
[For use in China (GB 4584)]
For a press machine with a slide that can be stopped at any position, calculate the safety
distance S using Equation 1.
●
Equation example 1
S = K × T + C
S: Safety distance (mm)
Minimum required distance between the sensing area plane and the nearest dan-
gerous part of the machine
K: Intrusion speed of person or object (mm/sec.)
For intrusion horizontal to the sensing area, calculate using 1,600mm/sec.
For intrusion vertical to the sensing area, if the safety distance is S ≤ 500mm, calculate
using 2,000mm/sec. If the safety distance is S > 500mm, calculate using 1,600mm/sec.
T: Overall response time of system (sec.)
T = T
m
+ T
SF4D
T
m
: Maximum response time of machine (sec.)
T
SF4D
: Response time of device (sec.)
C:
Distance from intrusion of hand into sensing area until detection by this product (mm).
On a press machine, if the interlock (start-restart interlock) function of the device or
a safety controller is not used, calculate using the table below.
Minimum sensing object
Additional distance C
Stroke start by the device or a safety controller
≤ 14mm
0mm
Possible
> 14 to 20mm
80mm
> 20 to 30mm
130mm
> 30 to 40mm
240mm
Not possible
> 40mm
850mm
On a press machine, if the interlock (start-restart interlock) function of the device or
a safety controller is used, calculate with C = 0.
For a press machine with a slide that cannot be stopped at any position, calculate the
safety distance S using Equation 2.
●
Equation example 2
S = K × T
S
+ C
S: Safety distance (mm)
Minimum required distance between the sensing area plane and the nearest dan-
gerous part of the machine
K: Intrusion speed of person or object (mm/sec.)
For intrusion horizontal to the sensing area, calculate using 1,600mm/sec.
For intrusion vertical to the sensing area, if the safety distance is S ≤ 500mm, calculate
using 2,000mm/sec. If the safety distance is S > 500mm, calculate using 1,600mm/sec.
T
S
:
Time from insertion of hand into this product until the slide reaches the low dead point (sec)
T
S
= [(1 / 2) + (1 / N)] × T
n
N: Number of clutch grooves
T
n
: Time required for one revolution of crankshaft (sec.)
C:
Distance from intrusion of hand into sensing area until detection by this product (mm).
On a press machine, if the interlock (start-restart interlock) function of the device or
a safety controller is not used, calculate using the table below.
Minimum sensing object
Additional distance C
Stroke start by the device or a safety controller
≤ 14mm
0mm
Possible
> 14 to 20mm
80mm
> 20 to 30mm
130mm
> 30 to 40mm
240mm
Not possible
> 40mm
850mm
On a press machine, if the interlock (start-restart interlock) function of the device
or a safety controller is used, calculate with C = 0.
Содержание SF4D-x-01 Series
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