Operating instructions B-Series
Version 2.4, En Page 79 of 81 21-10-2005
13.6 Electric motor safety devices.
Protect electric motor against:
• direction of rotation
• overloading
• supplied power
13.7 The regulation must suffice with regard to the following requirements.
Extra point(s) for attention with ATEX pumps.
1.5.1.
1.5.2.
1.5.8.
Independent and reliable safety devices (see art.1.2 of the ATEX 95 for
definition):
• Do the safety devices work independently of the other measuring and operating
devices?
• Is it sufficiently quickly signalled t
hat a safety provision is no longer in working
order?
• Is the fail-safe principle applied (for electrical circuits)?
•
Do the operating provisions work directly on the control devices concerned, and
not on the software? (This only applies in general).
With a malfunction to safe position:
In the event of a failure in the safety devices does the appliance (or BS) go to the
extent possible to a safe position?
Dangers relating to the software:
Was with the design of equipment, safety system and safety devices controlled
by software particular account taken of dangers caused by errors in the program?
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