AT-GM-11KM BANNER ENGINEERING, AT-GM-11KM Datasheet - Page 4

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

DUO-TOUCH
The input circuit of the DUO-TOUCH SG Safety Module requires simultaneous actuation
(within 0.5 seconds of each other) of both two-hand control actuators to generate an
output signal.
The timing diagram in Figure 2 illustrates that an output signal from the DUO-TOUCH
SG Safety Module occurs only if switches #1 and #2 (SW1 and SW2) are actuated
within 0.5 seconds of each other. The output signal drops within 35 milliseconds
following the release of either switch. The device output does not reenergize until both
hand controls are disengaged, and then simultaneously re-actuated. This logic reduces
the possibility of defeating the two-hand control system by tying down one or both
actuators.
Muting M1 and M2 Inputs
“Muting” is the automatic suspension of the safeguarding function of a safety device
during a non-hazardous portion of the machine cycle.
To mute the two-hand control buttons appropriately, the muting system’s design must:
1) Identify the non-hazardous portion of the machine cycle,
2) Involve the selection of the proper muting devices, and
3) Include proper mounting and installation of those devices.
The M1 and M2 muting devices must have normally open contacts, or one device with
a PNP output and one device with an NPN output. Both devices must fulfill certain input
requirements (see Muting Device Inputs in the Safety Module Specifications table).
Several types of devices may be used, including (but not limited to): limit switches,
photoelectric sensors (opposed or polarized-retroreflective), positive-driven safety
switches, and inductive proximity sensors.
4
Figure 2.
Feedback
Output
Power
Loop*
P/N 109782
SW1
SW2
SSI
M1
DUO-TOUCH SG Safety Module AT-..M-13A timing diagram
< 0.5 s
®
SG –
Theory of Operation
< 0.5 s
Models AT-GM-11KM and AT-HM-11KM Two-Hand Control Modules
> 0.5 s
Feedback
Open
SW1 (or SW2)
tied down
< 3.0 s
Banner Engineering Corp.
www.bannerengineering.com • Tel: [phone]
Cycle
Mute
A single device, such as one relay or one
switch with two N.O. output contacts, may
fail due to a single fault. Such a fault
could result in an unintentional mute cycle
and cause an unsafe situation.
Stop caused by
opening MI
!
•
CAUTION ...
Do Not Use a Single
Muting Device
Minneapolis, MN U.S.A.
command
SSI Stop
THC prevented
by open SSI