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Festo — CMMT-AS-...-S1 — 2021-04d
Safety
Check the safety functions at adequate intervals for proper functioning. It is the responsibility of the
operator to choose the type and frequency of the checks within the specified time period. The manner
in which the test is conducted must make it possible to verify that the safety device is functioning
perfectly in interaction with all components. Time period for cyclical test
engineering.
Prior to initial commissioning, wire the control inputs of the safety sub-functions STO and SBC. The
safety sub-functions STO and SBC are available on the CMMT-AS on delivery without the need for any
additional parameterisation.
Keep the documentation somewhere safe throughout the entire product lifecycle.
2.2
Intended use
The CMMT-AS-...-S1 supports the following safety sub-functions in accordance with EN 61800-5-2:
–
Safe torque off (STO/Safe torque off)
–
Safe brake control (SBC/Safe brake control)
–
Safe stop 1 (SS1/Safe stop 1), achievable with suitable safety relay unit and appropriate circuitry of
the servo drive
The safety sub-function STO is intended to switch off the torque of the connected motor, thereby
preventing an unexpected restart of the motor.
The safety sub-function SBC is intended to safely hold the motor and axis in position at standstill.
The safety sub-function SS1 is intended for performing a rapid stop with subsequent torque switch-
off.
2.2.1
Application areas
Safety sub-functions may only be used for applications for which the stated safety reference values
are sufficient
9.1 Technical data, safety engineering.
2.2.2
Permissible components
The logic power supply must meet the requirements of EN 60204-1 (protective extra-low voltage,
PELV).
If holding brakes and clamping units without certification are used, a risk assessment is required to
assess their suitability for the related safety-oriented application.
In addition to the requirements of EN 60204-1, the following requirements apply to other components
of the drive system from EN 61800-5-2:
–
Annex D.3.5 and D.3.6 for motors
–
Annex D.3.1 for motor and brake cables
–
Annex D.3.4 for mating plugs
Components approved by Festo for the CMMT-AS fulfil these requirements.
2.3
Foreseeable misuse
Foreseeable misuse, general
–
Use outside the limits of the product defined in the technical data.
–
Cross-wiring of the I/O signals of more than 10 servo drives CMMT-AS.
–
Use in IT networks without insulation monitors for detection of earth faults.
