TB20 Analog input module – AI 2x I, 0/4-20 mA, ?20 mA, 12 Bit

Parameters for the TB20 analog module

• Diagnostic alarm: On | Off
• Overflow / underflow diagnosis: On | Off
• Representation values: SIMATIC* S7 | SIMATIC* S5

Parameters for each channel

• Wire break detection (only for 4 … 20 mA): On | Off
• Interference frequency suppression: None | 10 Hz | 50 Hz | 60 Hz | 400 Hz
• Measuring ranges: Deactivated | 0 … 20 mA | 4 … 20 mA | ?20 mA
• Limit value alarms enabled: On | Off
• Upper/lower limit: 16 bit analog value (?27648)
• Measuring ranges 0 … 20 mA, 4 … 20 mA, ?20 mA, individually configurable for each channel
• Measurement resolution: 11 bit + sign
• Diagnostic messages
• Wire break detection (for 4 … 20 mA)
• Limit value alarms for each channel
• A bi-color LED (blue/red) indicates the module operating status and any malfunctions
• 2 analog inputs for measuring current, electrically isolated from the backplane bus
• 2 process input words

Part of the Helmholz decentralized fieldbus I/O system – TB20