Local Override/Identification Device - Siemens TALON Series Technical Reference Manual

TX-I/O Modules
Compensation of the line
resistance
Signal type
Temperature Pt1K 375
Temperature Pt1K 385
Temperature Ni1K (LG-Ni 1000)
Temperature NTC 10K
Temperature NTC 100K
Voltage measuring U10
Current measuring I420
Load resistance
(extended range) only with reduced hum injection (see below)
1)
This section describes the measured resolution. It is different from the transmitted resolution that the bus delivers into the AI block
2)
and that is transformed by [Slpe] and [Icpt]
The range monitoring of signal type U10 is done with a short NEGATIVE signal of –3,1 V, 0.05 mA (open circuit detection). If a field
3)
device has an open output, a negative voltage could appear there. This can damage any polarized components (e.g. capacitors).

Local Override/Identification Device

22
Siemens Industry, Inc.
588-587
Analog Input Sensor Support
Analog input sensor support includes:
1K Nickel – Landis & Gyr curve

1K Platinum – 375 and 385 coefficient

10K and 100K Thermistor – Type II Curve

Technical Data for Analog Inputs on TX-I/O Modules TXM1.8U,
TXM1.8U-ML, TXM1.8X, and TXM1.8X-ML
1 Ohm, calibrated in the module, (except for NTC10K and NTC100K)
Range
-50...150 (180) °C
-50...400 (600) °C
-50...150 (180) °C
(-40 ...115 °C)
1)
(-40 ...125 °C)
1)
0 ... 10 V
3)
4 ... 20 mA
TXM1.8U-ML and TXM1.8X-ML modules are also equipped with a local
override/identification device (LOID), which includes an LCD signal display. The LCD
displays the following information for each IO point:
Configured signal type

Symbolic display of process value

Notification of faulty operation, short circuit, or sensor open circuit

Orange LEDs indicate override status individually per point.
CONFIDENTIAL: For internal use only
Resolution
2)
10 mK
1)
20 mK
1)
10 mK
1)
10 mK (25°C)
10 mK (25°C)
1 mV
1 mA
TALON TX-I/O Modules and Island Bus Technical Reference
Sensor current
(cyclic polling)
1.54 mA
1.96 mA
1.54 mA
0.14 mA
0.14 mA
490 / 440 Ohm,
pulsed (cyclic polling
of the I/O points)
4/6/2010