TB20 AI, 16 Bit, I

Parameters for the module

Parameters for each channel

Channels electrically isolated from each other and from the backplane bus
Measuring ranges 0 ... 20 mA, 4 ... 20 mA, ±20 mA, individually configurable for each channel
Measurement resolution: up to 15 bits + 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
Red/green bi-color LEDs (one for each channel) indicate the channel status
analog inputs for measuring current

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Electrical isolation
	from the backplane bus	Yes
	Between the channels	Yes
Current draw
	External	Not needed
	Internal	Max. 140 mA
Power dissipation	Max. 1 W
Measuring ranges / load resistance	0 ... 20 mA / 50 ohms, 4 ... 20 mA / 50 ohms, ±20 mA / 50 ohms
Measuring method	Integration
Measurement resolution	15 bits + sign
Interference frequency suppression	None \| 10 Hz \| 50 Hz \| 60 Hz \| 400 Hz
Refresh rate / conversion rate	The conversion time will depend on the interference frequency suppression: None: 2 ms 400 Hz: 8 ms 60 Hz: 51 ms 50 Hz: 60 ms 10 Hz: 160 ms
Diagnoses		Upper measuring range limit exceeded (overflow), Lower measuring range limit fallen below (underflow), Wire break (for 4 ... 20 mA only), Parameter assignment error
Process alarms	Upper and lower limit per channel
Error limits
	Operational error limit in the entire temperature range	±0.2 % relative to the nominal range
	Basic error limit at 25 °C	±0.1 % relative to the nominal range
	Temperature error	±0.005 %/K relative to the nominal range
	Linearity error	±0.05 %/K relative to the nominal range
	Repeating accuracy in steady state at 25 °C	±0.05 %/K relative to the nominal range
Parameter configuration length	44 Bytes
General error indicator	Red LED
Hot-swap capable	Yes