Operating Instructions

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Siemens TX-I/O™ Module system – Functions and operation CM110561en_08
Building Technologies Analog output functions 2018-10-25
6 Analog output functions
6.1 Proportional control signal
For operation of devices with an analog input (0 ... 10 V, 4 ... 20 mA), e.g.:
– Damper actuators
– Valve actuators
– Proportional three-position converters
– Devices for analog display and acquisition
For connection to other systems, e.g. to transfer:
– Setpoints
– Sensor values
– Reference variables
The function uses one I/O point.
Configurable signal types
Description Signal type Range (over
range)
Reso-
lution
I/O LED LCD
Error
indication
(Under / over
range)
Shorted
Under range
Over range
Unreliable output *)
Voltage output AO 0-10V /
Y10S
0 ... 10 V
(-0.05...10.6 V)
1 mV
variable variable
X X X
Current output AO 4-20mA
/ Y420
4 ... 20 mA
(3.92...20.96 mA)
1 µA
variable variable
X X
*) "Unreliable output" is displayed when the DC 24 V supply voltage is insufficient for a
Y10S signal.
I/O status LED
LO LED
BUS
LCD
AO Signal
Local override
Signal Processing
(Y10, Y420)
Process
value
Field
device
10561Z108
Block diagram of function
Application
Hardware
Function