Banner DUO-TOUCH SG Two-Hand Control Safety Modules - Manual (Page 4)

In addition, the Safety Module logic will not permit
the safety outputs to turn ON when power is initially
supplied and if the hand controls (actuators) are in
their Run state (e.g. both actuators tie-down). The
hand controls must change to their Stop state and
return to the Run state before the safety outputs
can turn ON.
The actuating devices must be protected from acci-
dental or unintended operation. This can be ac-
complished by their mounting position and/or
through the use of protective shields such as rings,
guards or shields; see Mechanical Installation.
Power
< 0.5 s < 0.5 s Feedback Open SW1 tied down SW2 tied down
Feedback
Loop*
SW1
SW2
Output
> 0.5 s
Figure 2. Model AT-FM-10K timing logic
Part- and Full-Revolution Clutched Machinery
When used on part-revolution clutched machinery that can be stopped at any point during the cycle, the Safety Module can be used
for the following function types: “inch” (jog), “single-stroke,” or “continuous” (run).
When used on full-revolution clutched machinery (that can not be stopped until the end of the cycle), the Safety Module is used to
initiate the cycle and is known as a “two-hand trip device.”
In either situation, the hand controls must be safely located and protected from false operation (see Mechanical Installation and Separa-
tion Distance) and the Safety Module must be appropriately interfaced to the machine (see Electrical Installation).
When used in single-cycle or single-stroke mode, the machine control must provide an anti-repeat feature so that the operator must
release the two-hand control actuators after each machine cycle, before a new cycle can be initiated.
NOTE: Two-hand control and two-hand trip safeguarding protect only the operator’s hands . Additional safe-
guarding (e.g., additional two-hand controls) may be required. Refer to the relevant standards for addition-
al requirements.
Mechanical Installation
Install the Safety Module inside an enclosure rated NEMA 3 (IEC IP54), or better. It is not designed for exposed wiring. The Module
mounts directly onto a standard 35 mm DIN rail.
Heat Dissipation Considerations
For reliable operation, ensure that the operating specifications are not exceeded. The enclosure must provide adequate heat dissipation,
so that the air closely surrounding the Module does not exceed the maximum operating temperature stated in the Specifications. Methods
to reduce heat build-up include venting, forced airflow (e.g., exhaust fans), adequate enclosure exterior surface area, and spacing be-
tween modules and other sources of heat.
Installation of Hand Controls
CAUTION: Hand Controls
The environment in which hand controls are installed must not adversely affect the means of ac-
tuation. Severe contamination or other environmental influences may cause slow response or false ON
conditions of mechanical or ergonomic buttons. This may result in exposure to a hazard.
CAUTION: Install Hand Controls to Prevent Accidental Actuation
Total protection for the two-hand control system from “defeat” is not possible. However, the user is re-
quired by OSHA regulations to arrange and protect hand controls to minimize possibility of defeat
or accidental actuation.
AT-FM-10K Two-Hand Control Module
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