RCF UP 9501, User Manual

Page: 17 / 40

17
ENGLISH
30
BGM 3
audio input (dual RCA connector) for a ‘line’ level signal (i.e. CD / MP3
player, tuner).
T
he Two channels
(
lefT
/
riGhT
)
of The
BGM 3
sTereo siGnal are miXed in mono inside The deVice
.
31
AUX INPUT
balanced audio input (removable connector).
32
CTRL RS485: RS 485 serial port (removable connector).
33
a FLEXCOM BUS IN:
data bus input (removable connector).
33
b FLEXCOM BUS OUT: data bus output (removable connector).
34
GENERAL PURPOSE INPUTS
12 logic inputs (removable connectors), of which the first 8 are monitored and the last 4
with opto-isolators.
T
he loGic inpuTs are enabled only if The deVice is linked To a
dXT 9000
sysTem main uniT
.
T
he loGical inpuTs
9
To
12
can be acTiVaTed by connecTinG The
24 V dc 35
ouTpuT To each loGic
inpuT
. p
ossible loGic sTaTes
:
inacTiVe
/
acTiVe
.
+ Hot
– Cold
GND Ground
For monitoring purposes, the two CMD contacts should normally be powered by 24 V dc
(voltage available from the
24 V DC
35 . FALL BACK input state depends on presence
and polarity of the voltage at the two CMD contacts.
STATE VOLTAGE AT THE CMD CONTACTS DESCRIPTION
COMMAND KO No voltage The FALL BACK INPUT is not connected
IDLE 24 V dc, direct polarity The FALL BACK INPUT is connected, but inactive
ACTIVE 24 V dc, reverse polarity The FALL BACK INPUT is activated
+ RS 485 B (non-inverting)
– RS 485 A (inverting)
GND RS 485 (reference ground)
28V Power 28 V dc
GND Power supply ground