AT-GM-11KM BANNER ENGINEERING, AT-GM-11KM Datasheet - Page 8

• Manufacturer Part Number: AT-GM-11KM
• Description: AT-GM-11KM TWO-HAND CTL W/MUTI
• Manufacturer: BANNER ENGINEERING

DUO-TOUCH
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. This is the “separation distance,” and may be calculated as
follows:
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 designed to complete a full machine cycle,
once activated, use the following formula:
For both formulas:
Because the DUO-TOUCH SG Safety Module interfaces to many types of machine
controls, it is not possible to give exact wiring instructions here. The following
guidelines are general in nature.
Connection of Input Switches
The actuation devices are connected to the DUO-TOUCH SG module as shown in
Figures 8a, b, and c. SW1 and SW2 must both have normally open and normally closed
output contacts, or two current-sourcing complementary outputs each, all capable of
reliably switching up to 20 mA, at 12V dc. If hand controls have metal housings, the
housings must be connected to protective earth ground.
If STB Touch Buttons are used, connect the brown and blue wires to terminals Z1 and
Z2. If electronic actuation devices other than STB Touch Buttons are used, they must
share the same voltage supply with the Safety Module (see Electronic Hand Control
WARNING on page 9).
8
D s = the separation distance in inches,
K
T s = the stop time (in seconds) of the machine, measured from the application
T r = 0.035 seconds (the response time of the Safety Module as measured from
T h = the response time of the slowest hand control (from the time when a hand
T m = the maximum time (in seconds) the machine takes to cease all motion after
P/N 109782
= 63" per second (the hand speed constant currently accepted by OSHA; see
NOTE 1)
of the “stop” signal to the final ceasing of all motion, including stop times
of all relevant control elements, and measured at maximum machine
velocity (see NOTE 2)
the time either hand disengages a hand control)
disengages that control until the switch opens; see NOTE 3)
it has been tripped. For full-revolution clutch presses with only one
engaging point, T m is equal to the time necessary for one and one-half
revolutions of the crankshaft. For full-revolution clutch presses with more
than one engaging point, T m is calculated as follows:
T m = (
N = number of clutch engaging points per revolution
T cy = time (in seconds) necessary to complete one revolution of the crankshaft
where:
1
/
2
+
®
1
/
N
SG –
) x T cy
D s = K x (T s + T r + T h )
D s = K x (T m + T r + T h )
Electrical Installation
Separation Distance
Models AT-GM-11KM and AT-HM-11KM Two-Hand Control Modules
Banner Engineering Corp.
www.bannerengineering.com • Tel: [phone]
1) The OSHA-recommended hand speed
2) T s is usually measured by a stop-time
3) T h is usually insignificant for purely mechanical
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 s and 0.020 seconds for T h :
In this example, both hand controls must
be located no closer than 36" from the
nearest hazard point.
Hand controls must be mounted at 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.
Example Separation Distance (D s )
K = 63" per second,
T s = 0.50 seconds
T r = 0.035 seconds
T h = 0.035 seconds
D s = K x (T s + T r + T h )
NOTES:
constant K has been determined by various
studies, and although these studies indicate
speeds of 63"/sec to over 100"/sec, they are
not conclusive determinations. The employer
should consider all factors, including the
physical ability of the operator, when
determining the value of K to be used.
measuring device. If the specified machine
stop time is used, add at least 20% as a
safety 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.
switches. However, T h should be considered
for separation distance calculation when using
electronic or electromechanical (i.e. powered)
hand controls. In this example, STB response
time = 0.035 seconds.
!
= 63" (0.50 + 0.035 + 0.035)
= 36"
stop-time measuring device)
•
Calculation
Minneapolis, MN U.S.A.
WARNING ...
Location of Touch
Button Controls
(measured by a