COTRUST CTH200 Series User Manual

Technical Specifications
54
Voltage (bipolar)
2.5mV(±5V range); 1.25mV(±2.5V range)
Current
5μA(0~20mA range)
Analog to digital
conversion time
< 300μs
Analog input step
response
1.5ms
Common mode
rejection
40dB, DC 60Hz
Common mode voltage
Signal voltage plus common mode voltage
must be ≤ 12V
DC Input impedance
≥10MΩ
Maximum input voltage
30V
Maximum input current
30mA
Wiring Diagrams
SM231 AI Module (CTH2 231-0HC32)
Calibration and range
【Calibration and the position of range switch】
【Input calibration】
Because the calibration adjustment affects the OPAMP behind the analog multiplexer, it affects
all user input channels. In addition, because the component parameters of the input channels in
front of the multiplexer may differ, there is a slight difference of the same input signal on different
channels even after calibration.
The input has been filtered in the module, so the measurements is stable. Start the analog input
filter for all input of the module for better performance parameters. When calculating the average

COTRUST CTH200 Series Specifications

General

Brand	COTRUST
Model	CTH200 Series
Category	Controller
Language	English