3SU18 enclosures
10.4 3SU18..-3 two-hand operation console
SIRIUS ACT 3SU1 pushbuttons and signaling devices
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System Manual, 08/2018, A5E03457306020A/RS-AK/010
10.4
3SU18..-3 two-hand operation console
10.4.1
Application areas
Two-hand operation consoles, approved according to EN 574, are used for machines and
systems with danger areas for the purpose of controlling the location of both hands of the
operator. Through a simultaneous and location-controlled use of both hands, protection from
dangerous movement in the danger area of the machine is ensured.
Two-hand operation consoles are used for the following safety requirements:
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Safety at presses and punches
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Safety at printing presses
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Safety at paper processing machines
10.4.2
Function
The synchronous and location-controlled operation using both hands occurs throughout the
duration of the danger. Bypassing of the safety mechanism or accidental actuation, e.g., by
elbows, arms or knees, is effectively prevented by protective collars over the actuating
elements. The sloping shape of the top side enables ergonomic operation and working
position. Expansion to include additional operator controls is possible.
The two-hand control device must be located outside the hazard zone in order to prevent the
operator from entering the zone before the machine has reached a complete standstill.
The following properties must be provided for mobile two-hand control devices:
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Stability
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The safety distance must be maintained between the control actuating devices and the
hazard zone
●
In the case of adjustable control actuating devices, a latch must be available
The control command is given by pressing the two pushbuttons on the sides simultaneously
(within 0.5 s of each other) and must be maintained for as long as a hazard exists.
Appropriate two-hand control devices from the 3SK1 Advanced device range are available
for evaluating control commands.
A function test must be carried out before commissioning. The following properties must be
checked in the function test:
●
Simultaneous actuation (use of both hands)
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Synchronous actuation (synchronism ≤ 500
ms)
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Relationship between input signals and output signals
●
Renewed generation of the output signal