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Function
• This analog input module extends an KNX analog
input, order no. TYF784 by four additional sensor
inputs for analog transducers.
• Measuring data evaluation and limit processing
take place in the KNX device.
• The analog input module accepts both voltage
and current signals:
Voltage signals
0 ... 1 V s
0 ... 10 V s
Current signals
0 ... 20 mA s
4 ... 20 mA s
• The current inputs 4 ... 20 mA can be monitored
for wire breakage (parameter setting).
Installation
The device is snap-fastened on a 35 x 7.5 mm rail
as per EN 50022.
G
An analog input module must be connected
to the KNX device by means of the 6-pole
system connector only (supplied with the
analog input module).
For operation, the analog input module needs an
external 24 V power supply unit.
In addition, the unit can supply power to connected
sensors or to the connected KNX device.
Wiring diagram
+Us
GND
Us
GND
E1
E2
TYF784E
E1...E4 :
DC 0-10 V
M
0(4)-20 mA
U : DC 24 V
S
M
max. 100 mA
Status
AC 24 V
AC 24V
AC 230Vv
50/60 Hz
AC 24V
Connection
+U s
: Power supply of external transducers
GND
: Ref. potential for +U s and inputs
E1 ... E4
E1 ... E4 : Measured-value inputs
24 V v : External power supply voltage
A : Transducers
B : Status LED (red)
C : System
connector,
6-pole,
connection
D : System connector, 6-pole, for future extensions
(no function)
3
Power supply of connected sensors
• The connected sensors can be supplied from
terminals +U s and GND (see fi g.). These
terminals are provided in duplicate and internally
interconnected.
• The total current consumption of all sensors
supplied this way must not exceed 100 mA.
• In the event of overload or short-circuit between
+U s and GND, the power will be switched off.
After removal of the fault, the power is switched
on again automatically.
• Sensors connected can also be supplied externally
(e. g. if their current consumption exceeds
100 mA). In such case, they must be connected
between terminals E1...E4 and GND.
q
Risk of irreparable damage to the device!
U s and GND must not be interconnected
with the corresponding terminals of
another device.
Never supply sensors connected to the
inputs of the analog input module (E1...
E4) from the supply terminals U s and
GND of a connected KNX device.
Installation of an analog input module
Please observe the following basic rules when
installing an analog input module:
• Replacement of a module (e.g. in case of defect)
by one of the same type can be effected during
operation of the system (for this purpose,
disconnect the module from the power supply).
After replacement, the KNX device will reset after
abt. 25 s. All inputs and outputs of the KNX device
and the modules connected are then re-initialized
and reset to their original state.
• Removing or adding modules without adapting
E3
E4
GND
Us
their project confi guration and subsequent
downloading into the KNX device is not allowed
as this will result in system failure.
Status LED
- During commissioning of the module
AC 24 V
On
Quickly blinking
Slowly blinking
Off
- Normal operation
On
Off
Slowly blinking = 1/s; quickly blinking = 2/s
for
module
module ready for operation
(self-test OK).
module initialization in
progress
module not confi gured (in
KNX device)
module initialized and in
operation
Precondition: LED must have
been on beforehand!
module
not
ready
for
operation (fault condition)
module initialized and in
operation.
Precondition: LED must have
been on beforehand!
6T7661A
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