- Product Description
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Order data
SpecificationOrder No.CTSC-100 EM131 Analog Input Module, 4AI×12BIT, Voltage or Current Input, IsolationCTS7 131-0HC10
- Technical Spec
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Performance Parameters
Specification EM131, 4 AI×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+ 40 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) no input type Differential Input Range Voltage(unipolar) 0～10V, 0～5V Voltage(bipolar) ±5V, ±2.5V Current 0～20 mA Data Range Unipolar, full-scale range 0～32000 Bipolar, 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 100ms 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 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 full-scale value signal to one of the input channels, read the value reported to the CPU.4. Adjust the GAIN potentiometer until the reading is 32000.Configuration
Table 1 shows how to configure the EM 131 module using the configuration DIP switches. Switches 1, 2, and 3 select the analog input range. All inputs are set to the same analog input range. In this table, ON is closed, and OFF is open. (SW4 to SW6 should be set to the OFF position)Table 1 EM 131 Configuration Switch Table to select Analog Input RangeUnipolar Full-S cale Input Resolution SW1 SW2 SW3 ON OFF ON 0 to 10V 2.5mV ON OFF 0 to 5V 1.25mV 0 to 20mA 5 uA Bipolar Full-Scale Input Resolution SW1 SW2 SW3 OFF OFF ON ± 5 V 2.5mV ON OFF ± 2.5 V 1.25mV
Input Data Word Format
NoteThe 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.
- Installation
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Size Diagram:
Wiring Diagram
