JVL MIS17 Series, User Manual

Page: 61 / 367

JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x 61
3.2 Safety
WARNING
RISK OF DEATH AND SERIOUS INJURY
If external forces act on the motor, for example in case of vertical axis (suspended loads),
and an unwanted movement, for example caused by gravity, could cause a hazard, the
motor must be equipped with extra measures for fall protection. For example, install ex-
tra mechanical brakes.
WARNING
STO is suitable for performing mechanical work on the system or affected area of a ma-
chine only. It does not provide electrical safety.
NOTICE
Perform a risk assessment for each stop function to determine the selection of a stop cat-
egory in accordance with EN 60204-1:
• Stop Category 0 is achieved with immediate removal of power to the actuator, re-
sulting in an uncontrolled coast to stop.
The STO according to EN 61800-5-2 accomplishes a Stop Category 0 stop.
This is the only category available for the MIS motors alone. Other measures must be
made to achieve stop category 1 or 2:
• Stop Category 1 is achieved with power available to the machine actuators to achieve
the stop. Power is removed from the actuators when the stop is achieved according
to EN 61800-5-2 Safe Stop 1 (SS1).
• Stop Category 2 is a controlled stop with power available to the machine actuators.
A holding position under power follows the stop.
NOTICE
When designing the machine application, timing and distance must be considered for a
coast to stop (Stop Category 0 or STO). For more information regarding stop categories,
refer to EN 60204-1.
Option
Time
STO Function Activation
Motor Speed
TT2542-01GB
In this area the motor is de-energized
but dependant on the attached inertia
to the motor it will keep moving for a
while before its fully stopped.