RTU560 Data Sheet Analog Input 23AE23

Doc-No.: 1KGT 150 573 V004 1 1

Analog Input 23AE23

Application

The 23AE23 board records up to 8 analog meas-ured values. The 23AE23 board allows connection of all typical measured value ranges.

It can be configured for the following measure-ment ranges by setting switches and jumpers:

± 2 mA

± 5 mA

± 10 mA

± 20 mA

± 40 mA

± 2 V DC

0 ... + 20 V DC

Other effective ranges and live zero signals be-come generated out of these ranges through con-version of the communication unit (CMU).

Characteristics

Basic checks and computing intensive, cyclical processing functions will already be done on the board and remove therefore the burden from the central unit. Relevant changes transmits the board as event via the peripheral bus.

The 8 differential inputs are not potentially isolated against the RTU560 power supply.

Unipolar or bipolar values resolves the 23AE23 into 4096 steps (12 bit plus sign) for 100 % of the measuring signal.

The differential inputs are protected against static and dynamic over-voltages by a protection circuit. A low-pass filter suppresses non line frequency ac disturbance.

The AD-converter, operating with the sigma-delta method scans with a higher resolution and has additional algorithms for a high suppression of line frequency and line harmonics interference voltag-es. Even for a deviation of ± 10 % of the line fre-

quency there is still given a suppression of > 45 dB. The internal high resolution allows it to scan all measuring ranges (exception: ±2 V DC (11 bit +sign)) with the same resolution (12 bit + sign) on one board. A 9th channel is used for automatic zero calibration.

Fig. 1: Block diagram Analog input board 23AE23

The analog input board 23AE23 can carry out the following processing functions on the measured values:

Zero point monitoring

Switch-over recognition

Smoothing

Threshold value monitoring on absolute val-ue or with accumulation and periodic back-ground transmission.

Measuring range and line frequency are easily to configure by switch registers respectively jumpers.

EA11

EA10

EA80

+EA81

A/D-converter

Multiplexer Connection:

A

D

Input circuit

Input circuit

B U

S

M O

D U

L E

-

-

+

Pro

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it

Re

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two

rk EA11

EA10

EA80

+EA81

A/D-converter

Multiplexer Connection:

A

D

Input circuit

Input circuit

B U

S

M O

D U

L E

-

-

+

Pro

tectio

n c

ircu

it

Re

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two

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RTU560 Data Sheet Analog Input 23AE23

2 Doc.–No.: 1KGT 150 573 V004 1

The micro controller needs these configurations parameters to setup the AD-converter.

Line frequency [Hz] Conversion period

per channel [ms]

Scan cycle per board [ms]

60 50

16,6

62,5 72,5

202,5

500 580 1620

The micro controller controls the A/D converter and executes all of the processing functions of the configured measured values within the conversion time. Furthermore the micro controller is respon-sible for interactive communication with the RTU560 system bus. All configuration characteris-tics and processing parameters are downloaded from the CMU via the RTU system bus.

During initialization and operation the board car-ries out a number of tests. If a fault occurs it is re-ported to the CMU. All fault conditions impairing the function of the board are displayed as com-mon fault signal with a light emitting diode (ST) on the front panel. A failure of the board is detected by the CMU.

The board has a serial connection to the RTU560 peripheral bus. It can’t be used in a basic subrack of a RTU232 (parallel bus).

RTU560 Data Sheet Analog Input 23AE23

Doc.-No. 1KGT 150 573 V004 1 3

Technical Data

In addition to the RTU560 general technical data, the following applies:

Input channels

Inputs 8 differential inputs

Measuring ranges

± 2 mA ± 5 mA ± 10 mA ± 20 mA ± 40 mA ± 2 V DC / 0 … 20 V DC

Shunt / impedance 50 Ω at 40 and 20 mA 150 Ω at 10 to 2 mA 110 kΩ at 2 V and 20 V DC

Continuous load without destruction

max. 80 mA for ranges 40 and 20 mA, max. 40 mA for ranges 10/5 to 2 mA, max. 38 V / max. 0.5 mA for ranges 2 and 20 V DC

AD converter resolution:

24 bit

Resolution: 12 bit + sign = ± 100%, all ranges except ± 2 V DC: 11 bit + sign for ± 2 V DC

Common mode voltage

Function limit typ. ± 8 V DC Absolute maximum rating ± 150 V DC. Common mode rejection at 0 ... 50 Hz

> 70 dB at +25 C

> 60 dB at 0 ... +25C

Line frequency interference suppression

> 100 dB for fN ± 2% > 45 dB for fN ± 10%

Line frequency (fN): 16.6, 50 or 60 Hz

Error on delivery: 0.1 %

0.2 % for ± 2 V DC

Linearity error: 0.1 %

Temperature drift: 100 ppm/K (0...70 C)

Power Supply

Supply: 5V / 190 mA

Mechanical Layout

Printed circuit board

3HE, Euro-card format (160 x 100 mm)

Front panel: 4R, 1 slot (20 mm)

Weight: approx. 0.3 kg

Connection Type

Connector: indirect 48 pole, F DIN 41612

Electromagnetic Compatibility

Electrostatic dis-charge Immunity IEC 61000-4-2 (level 3)

6 kV Contact 8 kV Air Performance criteria A

Radiated Radio-Frequency Electro-magnetic Field Im-munity Test IEC 61000-4-3 (level 3)

10 V/m Performance criteria A

Immunity to Electri-cal Fast Transient IEC 61000-4-4 (level 3)

2 kV Performance criteria A

Surge Immunity Test IEC 61000-4-5 (level 3)

2 kV Performance criteria A

Immunity to Con-ducted Disturb-ances, induced by Radio-Frequency IEC 61000-4-6 (level 3)

10 V Performance criteria A

Environmental Conditions

Temperature: -10 ... 70 C

Relative humidity: 5 ... 95 % (non condensing)

RTU560 Data Sheet Analog Input 23AE23

4 Doc.–No.: 1KGT 150 573 V004 1

Ordering Information

Front plate: Plastic light beige

23AE23 R5001 1KGT 012 200 R5001

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