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EM235 Analog Combination(235-0KD32)

4AI/1AQ×12BIT,Current/voltage,Isolation,500HZ

Order No.:CTS7 235-0KD32

Specification:4AI/1AQ×12BIT,Current/voltage,Isolation

Product Description

Order Data

Order Data

Order No.

CTSC-200 EM235, 4AI/1AQ×12BIT

CTS7 235-0KD32

 

Technical Spec

Performance Parameters

Specification

EM235, 4 AI/1AQ×12BIT

Physical Features

   Dimensions(W×H×D)

71.2×80×62mm

   Power Loss(dissipation)

2W

Power Consumption

    From +5V(from I/O bus)

34 mA

    From L+

60 mA

    L+  voltage range,class 2 or DC sensor supply

20.4~28.8V DC

    LED indicator

24 VDC Power Supply  Good
           ON = no fault,
           OFF = no 24 VDC power

Analog Input Feature 

   Number of analog input points

4 points

    Isolation(field side to logic circuit)

Optical isolated: 500VAC, 1 minute

    input type

Differential

Input Range

        Voltage(unipolar)

0-10V, 0-5V,  0-1V, 0-500mV,  0-100mV, 0-50mV

        Voltage(bipolar)

±10V, ±5V, ±2.5V, ±1V, ±500mV,  ±250mV,  ±100mV,±50mV

        Current

0~20 mA

Data Range

15~30V

        Bipolar,full-scale range

0~32000

        Unipolar, full-scale range

-32000~32000

Input Resolution

        Voltage(unipolar)

2.5 mV (0~10V)

1.25 mV (0~5V)

        Voltage(bipolar)

2.5 mV (±5V)

1.25 mV (±2.5V)

        Current

5μA (0~20mA)

    Analog to digital conversion time

<300μs

    Analog input step response

1.5ms

    Common mode rejection

40dB,DC to 60Hz

    Common mode voltage

Signal voltage + Common mode voltage < 12V

    Input Impedance

≥10MΩ

    Input filter attenuation

-3db @ 3.1kHz

    Maximum input voltage

30V

    Maximum input current

30mA

    ADC resolution

12BIT

Analog Output Features

    Number of analog output points

1

Signal range

       Voltage output

       Current output

±10V

0~20mA

Resolution, full-scale

       Voltage output

       Current output

12BIT

11BIT

Data word format

       Voltage output

       Current output

-32000~+32000

0~32000

       Accuracy

typical: ±0.5% of full scale;    Worse: ±2% of full scale

Setting time

       Voltage output

       Current output

100μs
 2ms

Maximum drive@24VDC power

       Voltage output

       Current output

5000 ohm, minimum
500 ohm, maximum

Calibration and Configuration
  • Location of the calibration and configuration switch

    • Input Calibration

The calibration adjustment will affect the instrumentation amplifier stage which follows the analog multiplexer. so the calibration affects all user input channels. Variations exist in the component parameters of each input circuit before the analog multiplexer will cause slight differences in the reading values between different channels connected to the same input signal even after calibration.

If need to acquire the specifications contained in this data sheet, may be you need to enable analog input filters for all inputs of the module. Please select 64 or more samples to calculate the average value.

To calibrate the input, please use the following steps.

  1. Turn off the power to the module, select the desired input range.

  2. Turn on the power to the CPU and module. Allow the module to stabilize for at least 15 minutes.

  3. Using a transmitter, a voltage source, or a current source, connect a zero value signal to one of the input channels.

  4. Read the value reported to the CPU from the input channel. Adjust the OFFSET potentiometer until the reading value is zero, or the desired digital data value.

  5. Connect a full-scale value signal to one of the input channels, read the value reported to the CPU. Adjust the GAIN potentiometer until the reading is 32000, or the desired digita data value.

  6. Repeat the OFFSET and GAIN calibration once more if required

  • Configuration

    Table 1 shows how to configure the EM 235 module using the configuration DIP switches. Switches 1 through 6 select the analog input range and resolution. All inputs are set to the same analog input range and format. Table 2 shows how to select for unipolar/bipolar (switch 6), gain (switches 4 and 5), and attenuation (switches 1, 2, and 3). In these tables, ON is closed, and OFF is open.

  •  

    Table 1    EM 235 Configuration Switch Table to select Analog Input Range and Resolution

Unipolar

Full-Scale InputResolution
SW1 SW2SW3 SW4 SW5 SW6 
ON OFF OFF ON OFF ON 0 to 50 mV 12.5 mV 
OFF ON OFF ON OFF ON 0 to 100 mV 25 mV 
ON OFF OFF OFF ON ON 0 to 500 mV 125 mV 
OFF ON OFF OFF ON ON 0 to 1 V 250 mV 
ON OFF OFF OFF OFF ON 0 to 5 V 1.25 mV 
ON OFF OFF OFF OFF ON 0 to 20 mA 5 mA 
OFF ON OFF OFF OFF ON 0 to 10 V 2.5 mV 

Bipolar

Full-Scale InputResolution
SW1 SW2SW3 SW4 SW5 SW6 
ON OFF OFF ON OFF OFF +25 mV 12.5 mV 
OFF ON OFF ON OFF OFF +50 mV 25 mV 
OFF OFF ON ON OFF OFF +100 mV 50 mV 
ON OFF OFF OFF ON OFF +250 mV 125 mV 
OFF ON OFF OFF ON OFF +500 mV 250 mV 
OFF OFF ON OFF ON OFF +1 V 500 mV 
ON OFF OFF OFF OFF OFF +2.5 V 1.25 mV 
OFF ON OFF OFF OFF OFF +5 V 2.5 mV 
OFF OFF ON OFF OFF OFF +10 V 5 mV 
                

Table 2   EM 235 Configuration Switch Table to select Unipolar/Bipolar, Gain, and Attenuation

EM 235 Switches

Unipolar/Bipolar
               Select
Gain SelectAttenuation
               Select
SW1 SW2 SW3 SW4 SW5 SW6 





ON Unipolar






OFF Bipolar




OFF OFF 

x1 



OFF ON 

x10 



ON OFF 

x100 



ON ON 

invalid 
ON OFF OFF 




0.8
OFF ON OFF 




0.4
OFF OFF ON 




0.2

Input Data Word Format

Note

The 12 bits readings of the analog-to-digital converter (ADC) are left-justified in the input data word format. The MSB is the sign bit: zero indicates a positive data word value. In unipolar format, the three trailing zeros cause the data word to be changed by a count of eight for each one-count change in the ADC value. In bipolar format, the four trailing zeros cause the data word to be changed by a count of sixteen for each one count change in the ADC value.


Output Data Word Format

Note

The 12 bits readings of the digital-to-analog converter (DAC) are left-justified in the output data word format. The MSB is the sign bit: zero indicates a positive data word value. The four trailing zeros are truncated before being loaded into the DAC registers. These bits have no effect on the output signal value.

Installation

Size Diagram

Wiring Diagram

       


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