- Product Description
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Order Data
Order Data
Order No.
CTSC-200 EM235, 4AI/1AQ×12BIT
CTS7 235-0KD32
- Technical Spec
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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 powerAnalog 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
2msMaximum drive@24VDC power
Voltage output
Current output
5000 ohm, minimum
500 ohm, maximumCalibration 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.
Turn off the power to the module, select the desired input range.
Turn on the power to the CPU and module. Allow the module to stabilize for at least 15 minutes.
Using a transmitter, a voltage source, or a current source, connect a zero value signal to one of the input channels.
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.
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.
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 Input Resolution SW1 SW2 SW3 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 Input Resolution SW1 SW2 SW3 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
SelectGain Select Attenuation
SelectSW1 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
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Size Diagram
Wiring Diagram
