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AI 8xI Iso 16bit
Part No: 600-250-7BH21
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8 Analogue inputs Current Isolated

AI 8 x I, 0/4-20 mA, ±20 mA, Iso., 16 Bit

Parameters for the 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)

Possible to use Short Parameters of 14Bytes instead of 44Bytes. Useful when extra parameters are not required and 244Byte limit of Profibus slave is being reached.

Channel LED signals

Flashing red light - Parameter assignment error on channel
Solid red light - Reading overflow/underflow or wire break
Flashing green light - Reading within overrange
Solid green light - Channel configured, normal reading
Off - Channel disabled or module not yet configured

• 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
• 4 analog inputs for measuring current
• 4 process input words

General information

Dimensions (DxWxH) 110 x 25 x 73 mm
Weight Approx. 110g

Number of inputs 8
Electrical isolation from the backplane bus
Electrical isolation Between the channels
Current draw 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: 2.5 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 - 24 Bytes

General error indicator - Red LED

Hot-swap capable - Yes

Ambient temperature - 0 °C … +60 °C

Transport and storage temperature -20 °C … +80 °C

Relative air humidity - 95 % r H without condensation

Protection rating -IP 20

Certifications - CE, UL

Surrounding Air Temperature - 0 °C … +60°C

Noise immunity - DIN EN 61000-6-2 EMC Immunity

Interference emission DIN EN 61000-6-4 EMC Emission

Vibration and shock resistance DIN EN 60068-2-8:2008 Vibration, DIN EN 60068-27:2010 Shock