Analog Input Modules Selection Guide: Technical Criteria & Application Standards
Analog Input Modules selection guide: technical parameters, mounting and compliance standards, and Schneider Electric, Delta Electronics, GMT comparison.
An analog input module is an expansion module that converts continuous signals such as 0-10 V or 4-20 mA from transmitters and sensors into digital values and passes them to the PLC. It is used in process and machine automation to bring the measured values of pressure, level, flow and temperature transmitters, potentiometers and sensors with analog outputs into the program. This category includes ABB AI series modules, Delta Electronics models with ±10 V voltage and ±20 mA current inputs, 4 and 8 channels, and 14 and 16 bit resolution, and a GMT analog input module. First determine the analog input according to the signal your sensor provides (voltage or current, and in what range), then compare PLC series compatibility, channel count, resolution and conversion time. In long-cable and noisy environments, a current signal is more resistant to interference than a voltage signal. A voltage-input channel and a current-input channel are not directly interchangeable; in the Delta AX-5 and R1 series they are separate modules, so choose the current-input model for a 4-20 mA transmitter. The Analog Input Modules category on Welibaba includes 19 active models from leading manufacturers such as Schneider Electric, Delta Electronics, GMT.
Key Technical Parameters for Selecting Analog Input Modules
To specify the right Analog Input Modules model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Relative Humidity | 5…95 % @ 55 °C yoğuşmasız, 5…95 % yoğuşmasız | Verify against project schedule and load calculation |
| Analog Input Type | Akım +/- 20 mA; Akım 0…20 mA; Akım 4…20 mA, Akım +/- 20 mA; Akım 0…20 mA; Akım 4…20 mA; Gerilim +/- 10 V; Gerilim +/- 5 V; Gerilim 0…10 V; Gerilim 0…5 V; Gerilim 1…5 V, Akım +/- 20 mA; Akım 0…20 mA; Akım 4…20 mA; Gerilim +/- 10 V; Gerilim 0…10 V; Gerilim +/- 5 V; Gerilim 0…5 V; Gerilim 1…5 V | Verify against project schedule and load calculation |
| Number of Analog Inputs | 2, 4, 8 | Verify against project schedule and load calculation |
| Storage Temperature | -40…85 °C | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in PLC Input and Output Modules.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Analog I/O Modules, Analog Output Modules, Connection Modules.
Frequently Asked Questions
What is the first parameter to check when selecting Analog Input Modules?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Analog Input Modules page to narrow down compatible series.
Which Analog Input Modules brands are available on Welibaba?
Welibaba currently stocks 19 active models in this category from manufacturers including Schneider Electric, Delta Electronics, GMT, complete with verified specifications and unit pricing.
How can I compare Analog Input Modules models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.