GE ERESCO MF4 Series Operating Manual page 55

CAUTION:
Example:
Copyright by GE Sensing & Inspection Technologies GmbH
08/24/2016
6. Edition, ID No.: 37020GB-F
Operating Manual ERESCO MF4 Type Series
In accordance with machinery directive 98/37/EC, the door contact circuits
are monitored for redundancy, i.e. if the door contact circuits DC1/DC2 are
connected, e.g. when using the unit in systems, they must be connected in
a way that ensures that both door contact circuits are opened.
Redundancy means that the circuit status of both door contact circuits is
monitored for status correspondence. When DC1 is open, DC2 must also be
open.
X-ray room with a charging door and a service door.
Charging door (door 1)
Functions correctly
ERESCO MF4
DC 1 DC 2
1 4 5
S1 S2
S3 S4
Door 1 opens:
Both door contact
circuits
are connected
Service door (door 2)
Does not function correctly
ERESCO MF4
DC 1
6 1 4
S1
door 1
S2
door 2
door 1
Door 1 opens:
Only 1 door contact
circuit is connected
Bogenstrasse 41 D - 22926 Ahrensburg
DC 2
5 6
S3
S4
door 2
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