STBVP6 BANNER ENGINEERING, STBVP6 Datasheet - Page 4

• Manufacturer Part Number: STBVP6
• Description: Photoelectric Touch Buttons
• Manufacturer: BANNER ENGINEERING

Specifications of STBVP6

• Output Current: 150mA
• Supply Voltage Range Dc: 10V To 30V
• Function: Proximity
• Primary Type: Photoelectric
• Technology: Photoelectric
• Accessories Available: Cordsets, Field Covers and Brackets
• Lead Free Status / Rohs Status: RoHS Exempt Product

Separation Distance
Both hand controls must be located far enough away from the nearest hazard point that the
operator cannot reach the hazard with a hand or other body part before the hazardous motion
ceases (ANSI B11.19, 4.2.4.3.2). This is the “separation distance,” and may be calculated as
follows [see OSHA CFR 1910.217 (c) (3) (vii) & (viii)].
For Part-Revolution Clutch Machinery
Where the machine and its controls allow the machine to stop motion during the hazardous portion
of the machine cycle, use the following formula:
For Full-Revolution Clutch Machinery
Where the machine and its controls are de signed to complete a full machine cycle, once ac ti vat ed,
use the following formula:
For both formulas:
4
STB Series Self-Checking Optical Touch Buttons
NOTES:
1. T he OSHA-recommended hand speed constant K has been determined by various studies, and although these studies indicate
2. T
3. T
D
K
T
T
T
T
speeds of 63"/sec to over 100"/sec, they are not con clu sive de ter mi na tions. The employer should consider all factors, including
the physical ability of the operator, when determining the value of K to be used.
factor to account for brake system deterioration. If the stop-time of the two redundant machine control elements is un equal, the
slower of the two times must be used for calculating the separation distance.
when using electronic or electromechanical (i.e. powered) hand controls.
s
r
h
m
s
h
s
= t he stop time (in seconds) of the machine, measured from the ap p li c a t ion of the “stop”
is usually insignificant for purely mechanical switches. However, T
is usually measured by a stop-time measuring device. If the specified machine stop time is used, add at least 20% as a safety
= t he maximum time (in seconds) the machine takes to cease all motion after it has been
P/N 64136 rev. B
= the separation distance in inches,
= 6 3" per second (the hand speed constant currently accepted by OSHA; see NOTE 1,
= t he response time of the Two-Hand-Control safety module as measured from the time
= the response time of the slowest hand control (from the time when a hand dis en gag es
where:
below),
signal to the final ceasing of all motion, including stop times of all relevant control el e-
ments, and measured at maximum machine velocity (see NOTE 2, below),
either hand disengages a hand control
that control until the switch opens; see NOTE 3, below)
tripped. For full-revolution clutch press es with only one engaging point, Tm is equal to
the time nec es sary for one and one-half revolutions of the crankshaft. For full-revolution
clutch presses with more than one engaging point, Tm is calculated as follows:
T
N
T
cy
m
= (
= number of clutch engaging points per revolution
= time (in seconds) necessary to complete one revolution of the crank shaft
1
/
2
+
1
/
N
) x T
cy
D
D
s
s
= K x (T
= K x (T
m
s
+ T
+ T
h
r
should be considered for separation distance calculation
r
+ T
+ T
h
h
)
)
Banner Engineering Corp. • Minneapolis, MN U.S.A
www.bannerengineering.com • Tel: [phone]
The following example illustrates the use of
the formula to calculate separation distance
for a part-revolution clutch machine. This
example uses 0.50 seconds as a typical
value for T
0.020 seconds for T
In this example, both hand controls must be
located no closer than 35" from the nearest
hazard point.
Hand controls must be mounted a safe
distance from moving machine parts, as
determined by the appropriate standard. It
must not be possible for the operator or other
non-qualified persons to relocate them. Failure
to establish and maintain the required safety
distance could result in serious injury or
death.
K = 63" per second,
T
T
T
D
s
r
h
Example Separation Distance (D
s
= K x (T
WARNING . . .
Touch Button Controls
= 0.50 seconds
= 0.035 seconds
= 0.020 seconds
= 63" (0.50 + 0.035 + 0.020)
= 35"
stop-time measuring device)
s
and 0.035 seconds for T
Calculation
s
+ T
h
:
r
+ T
(measured by a
h
)
Location of
r
and
s
)