BMXAMI0800RU

The Schneider Electric BMXAMI0800RU, also cataloged as the BMXAMI0800RU Analog Input Module, operates as a dedicated hardware component for acquiring voltage and current field signals within Modicon M340 and Modicon M580 PAC backplane systems.

Hardware Specifications

Parameter	Specification
Model	BMXAMI0800RU
Brand	Schneider Electric
Origin	France
Operating Temp	0 to 60 deg C measurement accuracy range
Power Consumption	Approximately 150 mA at 24 VDC backplane supply
Product Type	High-density Analog Input Module
Platform Compatibility	Modicon M340 / Modicon M580 PAC
Input Channels	8 analog input channels
Input Type	High-level voltage and current input
Voltage Input Range	0...10 V, 0...5 V, 1...5 V, +/-5 V, +/-10 V
Current Input Range	0...20 mA, 4...20 mA, +/-20 mA
Conversion Resolution	16 bits ADC, 15 bits + sign analog input resolution
Input Impedance	10 MOhm in voltage mode, 250 Ohm in current mode
Connection Type	28-pin removable terminal block
Isolation Voltage	1400 V DC between channels and ground, 1400 V DC between channels and bus
Digital Filtering	First order digital filtering
Crosstalk Attenuation	Minimum 80 dB
Common Mode Rejection	100 dB

Modicon PAC Analog Signal Processing Characteristics

The BMXAMI0800RU performs analog signal conversion through 8 configurable input channels connected to Modicon M340 and Modicon M580 backplane architectures. The module accepts standard transmitter signals including 4-20 mA loops and voltage outputs, converting field measurements into digital values ranging from -32768 to +32767 in the user scaling format.

The module supports channel configuration for different voltage and current ranges. Input protection allows overload conditions up to +/-30 mA for current inputs and +/-30 V for voltage inputs. Factory calibration, digital filtering, and internal conversion resistor accuracy of 0.1% with 15 ppm/deg C drift characteristics define the analog acquisition behavior.

Frequently Asked Questions

Q: Does the BMXAMI0800RU provide channel-to-channel electrical isolation?
A: The available specifications indicate 1400 V DC isolation between channels and ground, and between channels and the bus. Some Schneider Electric documentation variants list channel isolation characteristics differently; installation should follow the applicable hardware reference manual.

Q: What is the analog conversion cycle time of the module?
A: The fast read cycle time is 1 ms plus 1 ms multiplied by the number of configured channels. The nominal read cycle time for 8 channels is 9 ms.

Q: Which field signal types can be connected to the input channels?
A: The module accepts voltage signals including 0...10 V, 0...5 V, 1...5 V, +/-5 V, +/-10 V and current signals including 0...20 mA, 4...20 mA, and +/-20 mA.

Field Installation Guidelines

Install the BMXAMI0800RU directly into a compatible Modicon M340 or Modicon M580 rack position according to the controller hardware configuration manual.

Use shielded instrumentation wiring for analog field connections where signal noise may affect measurement accuracy. Connect cable shields according to the cabinet grounding design and avoid routing analog signal cables parallel to high-current power conductors.

Verify terminal block wiring before energizing the rack. Configure each input channel according to the connected transmitter output range to prevent scaling errors. Maintain separation between analog signal wiring and switching circuits to reduce electromagnetic interference.

Confirm backplane power availability and module addressing before downloading the PLC/PAC configuration.

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