AT-AM-2A BANNER ENGINEERING, AT-AM-2A Datasheet - Page 6

• Manufacturer Part Number: AT-AM-2A
• Description: Relay; E-Mech; Control; Cur-Rtg 4A; Ctrl-V 115AC; Vol-Rtg 250AC/DC; DIN Rail Mnt; CE
• Manufacturer: BANNER ENGINEERING

Specifications of AT-AM-2A

• Brand/series: Duo-Touch
• Current, Coil: 4 A
• Current, Rating: 4 A
• Function: General Purpose
• Mounting Type: DIN Rail
• Power, Rating: 1000⁄200 VA⁄W
• Relay Type: Electro Mechanical
• Standards: CE
• Temperature, Operating: 0 to +50 °C
• Voltage, Control: 115 VAC
• Voltage, Rating: 250 VAC/VDC
• Coil Voltage Vac Nom: 115V
• Contact Current Max: 4A
• Contact Voltage Ac Nom: 250V
• Contact Voltage Dc Nom: 250V
• Contact Configuration: SPST-NO
• No. Of Poles: 1
• Relay Mounting: DIN Rail
• Lead Free Status / Rohs Status: RoHS Exempt Product

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 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 module as shown in Figures
5 a, b, and c. SW1 and SW2 must both be isolated normally-open switches 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 OTB Touch Buttons with PNP/NPN outputs are used, the System must be
connected as shown in Figure 5b. Electronic actuation devices other than OTB Touch
Buttons must share the same voltage supply with the Safety Module (see Electronic
Hand Control WARNING on page 7).
6
D s = the separation distance in millimeters or inches,
K
T s = the stop time (in seconds) of the machine, measured from the applica-
T r = 0.025 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
P/N 47550 rev. E
= 1600 mm (63") per second (the hand speed constant currently accepted by
OSHA; see NOTE 1)
tion 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)
after it has been tripped. For full-revolution clutch presses with only one
engaging point, T m is equal to the time necessary for 1.5 revolutions of the
crankshaft. For full-revolution clutch presses with more than one engaging
point, T m is calculated as follows:
N = number of clutch engaging points per revolution
T cy = time (in seconds) necessary to complete one revolution of the crankshaft
where:
®
– Models AT-..M-2A Two-Hand Control Modules
D s = K x (T s + T r + T h )
D s = K x (T m + T r + T h )
T m = (
Electrical Installation
Separation Distance
1
/
2
+
1
/
N
) x T cy
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 0.10 seconds for T h :
K = 1600 mm (63") per second,
T s = 0.50 seconds
T r = 0.025 seconds
T h = 0.10 seconds
D s = K x (T s + T r + T h )
In this example, both hand controls must
be located no closer than 1000 mm
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 )
NOTES:
constant K has been determined by various
studies, and although these studies indicate
speeds of 1600-2500 mm/sec (63"/sec to
over 100"/sec), they are not conclusive deter-
minations. 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
unequal, 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, OTB response
time = 0.10 seconds.
= 1600 mm (or 63") (0.50 + 0.025 + 0.10)
= 1000 mm (39.4")
measuring device)
!
Calculation
WARNING ...
Location of Touch
Button Controls
(measured by a stop-time
•
Minneapolis, MN U.S.A.
(39.4")