and radio equipment in its possible positions of normal use. It might possibly
be necessary to perform a special electromagnetic compatibility (EMC) test.
1.4.4 Protection Against Magnetic and Electromagnetic Fields During
Operation and Mounting
Magnetic and electromagnetic fields generated by current-carrying conductors
or permanent magnets of electric motors represent a serious danger to persons
with heart pacemakers, metal implants and hearing aids.
Health hazard for persons with heart pacemakers, metal implants and hearing
aids in proximity to electric components!
●
Persons with heart pacemakers and metal implants are not allowed to enter
the following areas:
– Areas in which components of the electric drive and control systems are
mounted, commissioned and operated.
– Areas in which parts of motors with permanent magnets are stored, re-
paired or mounted.
●
If it is necessary for somebody with a heart pacemaker to enter such an area,
a doctor must be consulted prior to doing so. The noise immunity of implan-
ted heart pacemakers differs so greatly that no general rules can be given.
●
Those with metal implants or metal pieces, as well as with hearing aids, must
consult a doctor before they enter the areas described above.
1.4.5 Protection against contact with hot parts
Hot surfaces of components of the electric drive and control system. Risk of
burns!
●
Do not touch hot surfaces of, for example, braking resistors, heat sinks, sup-
ply units and drive controllers, motors, windings and laminated cores!
●
According to the operating conditions, temperatures of the surfaces can be
higher than 60 °C (140 °F) during or after operation.
●
Before touching motors after having switched them off, let them cool down
for a sufficient period of time. Cooling down can require up to 140 minutes!
The time required for cooling down is approximately five times the thermal
time constant specified in the technical data.
●
After switching chokes, supply units and drive controllers off, wait 15 minutes
to allow them to cool down before touching them.
●
Wear safety gloves or do not work at hot surfaces.
●
For certain applications, and in accordance with the respective safety regula-
tions, the manufacturer of the machine or installation must take measures to
avoid injuries caused by burns in the final application. These measures can
Bosch Rexroth AG
Safety Instructions for Electric Drives and Controls
Brake Chopper
10/65
DOK-RCON03-EFC*BRAKE**-IT01-EN-P
