2.8.2 General Machine/System Safeguards Information
In general, the machine/system safeguards must:
l
Provide a barrier to prevent unauthorized entry or access to the machine or system. The barrier
must be designed so that personnel cannot reach into any identified danger zones.
l
Position the control panel so that it is outside the barrier area but located for an unrestricted
view of the moving mechanism. The control panel must include an E-stop mechanism. Buttons
that start the machine must be protected from accidental activation.
l
Provide E-stop mechanisms located at the control panel and at other points around the
perimeter of the barrier that will stop all machine movement when tripped.
l
Provide appropriate sensors and interlocks on gates or other points of entry into the protected
zone that will stop all machine movement when tripped.
l
Ensure that if a portable control/programming device is supplied (for example, a hand-held
operator/programmer pendant), the device is equipped with an E-stop mechanism.
A portable operation/programming device requires
many
additional system design
considerations and safeguards beyond those listed in this section. For details, see the
safety standards specified by the governing authority (for example, ISO, OSHA, UL, etc.) for
the site where the machine is being installed and operated.
l Prevent contact with moving mechanisms (for example, arms, gears, belts, pulleys, tooling, etc.).
l Prevent contact with a part that is thrown from the machine tooling or other part-handling
equipment.
l Prevent contact with any electrical, hydraulic, pneumatic, thermal, chemical or other hazards
that may be present at the machine.
l Prevent unauthorized access to wiring and power-supply cabinets, electrical boxes, etc.
l Provide a proper control system, program logic and error checking to ensure the safety of all
personnel and equipment (for example, to prevent a run-away condition). The control system
must be designed so that it does not automatically restart the machine/system after a power
failure. Refer to the next section.
l Prevent unauthorized access or changes to the control system or software.
NOTE
In order to comply with all the certifications of the drive, the motor connected to it must have
specific electrical and insulation characteristics:
Low voltage components / circuits (such as temperature sensors, holding brakes and feedback
systems) integrated within the motor must be designed to ensure a "reinforced insulation" (as
defined by EN 61800-5-1 standards) separating them from all high voltages components.
All Moog motor products meet these requirements.
PN: L-MAM2-E-201
Moog Casella DM2020 Installation and Startup Guide
2.8.2 General Machine/System Safeguards Information
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