Product Description
Key Features
- SIMATIC S7-300 analog input: SM 331 analog input module with isolated inputs, 8 AI and support for voltage and current input ranges.
- Resolution and conversion: Resolution with overrange: 14 bit; unipolar: 14 bit; bipolar: 13 bit + sign. Basic conversion time: 52 μs per channel.
- Supported input ranges: Voltage ranges include 1 V to 5 V, -1 V to +1 V, -10 V to +10 V, -5 V to +5 V, -500 mV to +500 mV and -80 mV to +80 mV. Current ranges include 0 to 20 mA, -20 mA to +20 mA and 4 mA to 20 mA.
- Diagnostics and alarms: Diagnostics function, readable diagnostic information, parameterizable diagnostic alarm, and parameterizable limit value alarm for channels 0 and 2.
- Supply and isolation: Load voltage L+: rated value (DC) 24 V with reverse polarity protection. Analog inputs are isolated from the backplane bus and the electronics power supply; isolation tested with 500 V DC.
- Physical and connection data: Required front connector: 20-pin. Dimensions: 40 mm width, 125 mm height and 117 mm depth. Weight, approx.: 230 g.
Applications
- Analog voltage and current signal acquisition: Supports voltage and current input ranges for analog signal acquisition.
- Isochronous operation: Supports isochronous mode and improved bus cycle time for isochronous mode.
- Signal diagnostics: Provides diagnostics, diagnostic alarms and limit value alarms for supported input channels.
Technical Summary
| Product identity | SIMATIC S7-300, analog input SM 331, 6ES7331-7HF01-0AB0 |
|---|---|
| Analog inputs | 8 |
| Resolution with overrange | 14 bit; Unipolar: 14 bit; bipolar: 13 bit + sign |
| Basic conversion time | 52 μs per channel |
| Input ranges | Voltage and current |
| Load voltage L+ | Rated value (DC): 24 V; reverse polarity protection: Yes |
| Required front connector | 20-pin |
| Isolation | Between the channels and backplane bus: Yes; between the channels and the power supply of the electronics: Yes; tested with 500 V DC |
| Isochronous mode | Yes |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
Which order number should be confirmed for this analog input module?
Confirm the complete order number 6ES7331-7HF01-0AB0 on the nameplate or installed-part documentation.
What input capacity and signal types does it have?
It has 8 analog inputs and supports voltage and current input ranges. Thermocouple, resistance thermometer and resistance input ranges are not supported.
What connector is required?
A 20-pin front connector is required.
Does it provide diagnostics and alarms?
Yes. It has a diagnostics function, readable diagnostic information, a parameterizable diagnostic alarm and a parameterizable limit value alarm for channels 0 and 2.
What lifecycle information applies to this configuration?
Product cancellation applies. Confirm the required quantity, destination and condition preference when submitting a legacy-part verification inquiry.
