assessment should include the possibility of a fault. The machine may have a dangerous
overload in the event of failure of the motor and additional protective measures may be
required to achieve a more secure state.
l Answer time: The maximum response time for the activation and the deactivation of the
STO safety function is 10 ms.
l Environmental conditions: (The following conditions have been validated for safety. The
other conditions can be found in
System Overview
.)
l Ambient temperature: 0 to + 40 °C
l EMC immunity: According to EN 61800-3: 2004, second environment (industrial), category
C3 (not suitable for use in the first environment that includes domestic environments)
l Vibration resistance: from 2 to 9 Hz, with a 3 mm amplitude (peak); 9 to 200 Hz,
acceleration of 1 g, according to EN 60721-3-3: 1995, Class 3 M4
l Shock resistance: 10 g, half-sine, 11 ms, according to EN 60721-3-3: 1995, Class 3 M4
l Body: The electronic device has to be installed in an enclosure with a minimum degree of
protection (IP54).
l Pollution degree 2: The device must be installed in an environment with pollution degree
2, where there is normally only non-conductive pollution. Occasionally, however, there
may be a temporary conductivity, caused by condensation, when the electronic device is
not in operation.
l When the Safe Torque Off circuit is activated, the motor can no longer produce torque. When
external forces are acting on the axis (e.g., through the vertical force of gravity), suitable
protection must be provided such as a mechanical automatic lock or a weight equalization
system.
l The Safe Torque Off function does not provide electrical isolation. There is no protection against
electric shock. The machine or the system must always be electrically isolated from the power
line through the main disconnection device and locked (lockout/tagout) in the disconnect position,
before performing any work on the machine or system, such as maintenance, service or cleaning
(refer to EN 60204-1: 2006). The staff must be aware that exposed connection surfaces can carry
dangerous voltages even after power off (capacitive voltage), and that the discharge time is
about 6 minutes.
PN: L-MAM2-E-201
Moog Casella DM2020 Installation and Startup Guide
10.4.1 Full Stop
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