Electrical connection of the FCU
Relay 1
Relay 2
6
7
8
6
7
8
13
14
15
13
14
15
M4
Start or result
of check
measurement
after test
cycle time ≥
upper limit
Measuremen
t is currently
in progress
and the
measured
values > limit
5 consecutive
measured
values ≤ limit
or
measurement
stopped
After the first
measured
value is
available:
Flow error
Flow rate
within set
range
When test
cycle time
elapsed, for
the duration
of a check
measurement
Test cycle
time has
elapsed -
check
measuremen
t is running.
Goes out
again when
measured
value < upper
limit.
Test cycle
time is
restarted
M5
Measuremen
t currently in
progress
Measuremen
t stopped
After the first
measured
value is
available:
Flow error
Flow rate
within set
range
In mode M2 "Switch", the relays keep their last setting after the
"Stop" button has been pressed.
Pressing the "Stop" button again returns the relays to their basic setting.
Relay 3
11
12
11
12
All operating
modes
FCU ready for
operation
FCU not ready
for operation
FCU 8111 /-Aviation
en(us)
/
BEWA FCU8111 3690427a en-us 2017-01-23.doc
2017-01-23
