
19
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
[In Chinese standard (GB 4584)]
In case slide of press machine can be stopped where you would like to, safety distance S
can be calculate by calculating formula 1.
●
Equation 1
S = K × T + C
S
: Safety distance (mm)
Minimum required distance between the sensing area surface and the danger-
ous parts of the machine.
K
: Intrusion velocity of operator’s body or object (mm/sec.)
In case the intrusion direction is horizontal to the sensing area, caluculate at 1,600
(mm/sec.). In case the intrusion direction is perpendicular to the sensing area,
caluculate at 2,000 (mm/sec.) when the safety distance S ≤ 500mm and calcu
-
late at 1,600 (mm/sec.) when safety distance S > 500mm.
T
: Response time of total equipment (sec.)
T = T
m
+ T
SF4B
T
m
: Maximum halting time of machine (sec.)
T
SF4B
: Response time of this device (sec.)
C
: Distance from entering hand to the sensing area to this product sensing it. (mm)
Calculate based on table below in case not using interlock function (start-restart
interlock) of this device or safety controller in press machine.
Minimum sensing object
Additional distance C Stroke starting by this device or safety
controller etc.
≤ 14mm
0mm
Possible
> 14 to 20mm
80mm
> 20 to 30mm
130mm
> 30 to 40mm
240mm
Not possible
> 40mm
850mm
In case using interlock function (start-restart interlock) of this device or safety con-
troller etc. in press machine, C equals 0.
In case the slide of press machine can not be stopped in your desire point, the safety
distance S can be calculated from formula 2.
●
Equation 1
S = K × T + C
S
: Safety distance (mm)
Minimum required distance between the sensing area surface and the danger-
ous parts of the machine.
K
: Intrusion velocity of operator’s body or object (mm/sec.)
In case the intrusion direction is horizontal to the sensing area, caluculate at 1,600
(mm/sec.). In case the intrusion direction is perpendicular to the sensing area,
caluculate at 2,000 (mm/sec.) when the safety distance S ≤ 500mm and calcu
-
late at 1,600 (mm/sec.) when safety distance S > 500mm.
T
S
: Time from entering hand to this device to slide reaching bottom dead point. (s)
T
S
= [(1 / 2 ) + (1 / N)] × T
n
N : Number of chases of clutch
T
n
: Time of going into a 360-degree roll (s)
C
: Distance from entering hand to the sensing area to this product sensing it. (mm)
Calculate based on table below in case not using interlock function (start-restart
interlock) of this device or safety controller in press machine.
Minimum sensing object
Additional distance C Stroke starting by this device or safety
controller etc.
≤ 14mm
0mm
Possible
> 14 to 20mm
80mm
> 20 to 30mm
130mm
> 30 to 40mm
240mm
Not possible
> 40mm
850mm
In case using interlock function (start-restart interlock) of this device or safety con-
troller etc. in press machine, C equals 0.