INDEX
DS2000 USER’S MANUAL (rev.C)
I.14
I.9 SAFETY REQUIREMENTS (RESTART INTERLOCK FUNCTION)
• Complete Standstill. The Restart Interlock safety function prevents motor unexpectedly
starting from standstill. This circuit can be used in the “Safe Standstill” machine function.
When the motor is rotating, the switching-on of the Restart Interlock provides an
uncontrolled stop (category 0 according to EN 60204-1:1997). When a controlled stop of
category 1, according to EN 60204-1:1997, is requested, the condition of stopped motor
must be assured. The final machine must be able to stop the motor.
WARNING: The designer must evaluate the machine stopping time during the risk
assessment even in case of failure. The machine can present a dangerous overrun
in case of failure of the drive. Other protective measure are needed to achieve a
safe condition.
• Environmental Conditions. Equipment intended to operate within the following
environmental conditions:
◊ Ambient temperature: 0 to +40°C
◊ EMC immunity: according to EN 61800-3/A11:2000 (Adjustable speed electrical power
drive systems. Part 3: EMC product standard including specific test methods). Second
environment (industrial)
◊ Vibration immunity: 2 to 12Hz, 1.5 mm amplitude (peak); 12 to 200Hz, 1 g acceleration
◊ Shock immunity: 10 g, half sine, 11 ms, according to EN 60721-3-3:1995, Class 3M4
• Enlosure. Electronic Equipment intended for installation in an enclosure providing at least
IP54 protection.
• Pollution Degree 2. The equipment shall be installed in a pollution degree 2 environment,
where normally only non-conductive pollution occurs. Occasionally, however, a temporary
conductivity caused by condensation is to be expected, when the electronic equipment is
out of operation.
WARNING: When the Restart Interlock Circuit is activated, the motor can no longer
generate a torque. Motors which are not automatically clamped when powered
down (e.g. vertical/inclined axes), must be clamped using a mechanical brake
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