B
DTRen-2008/SPA-5/LVA
Rev.:
a
Page 35
Bombardier Transportation (ZWUS) Polska Sp. z o.o.
4.4.7 EDG-4
Audible alarm generator
EDG-4 sound generator is a programmable source of the acoustic signal that is
delivered to the loudspeaker EDE-1. Feedback signals (current control circuit)
from the generator can be used to check if audible alarm works properly.
EDG-4 module circuit
Figure 21
Activation and deactivation of the audible alarm is realised by digital PLC output
OutA. If OutA is in high state then audible alarm is active. If OutA is in low state
then audible alarm is not active.
EDE-1
GENERATOR
(EDG-4)
+VA
PLC A
Ip1 A
Ip2 A
Out A
Out L
Ip1 B
Ip2 B
PLC B
This
training
material
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prepared
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for
educational
purposes
and
it
isn't
technical
documentation.
