Description

Schneider Electric BMXAMI0800 Modicon X80 Analog Input Module

The Schneider Electric BMXAMI0800 serves as the primary BMXAMI0800 Analog Input Module utilized to execute high-level multi-channel analog-to-digital signal conversion across Modicon X80 platform networks.

Hardware Specifications

Parameter	Specification
Model	BMXAMI0800
Brand	Schneider Electric
Operating Temp	0...60 degC (32...140 degF)
Power Consumption	Not specified
Number of Channels	8
Input Level	High level
Analog Input Types	Current: +/- 20 mA, 0...20 mA, 4...20 mA Voltage: +/- 10 V, +/- 5 V, 0...10 V, 0...5 V, 1...5 V
Analog/Digital Conversion	16 bits
Analog Input Resolution	15 bits + sign
Input Impedance	10 MOhm
Internal Conversion Resistor	250 Ohm (Precision: 0.1 %, Drift: -15 ppm/degC)
Filter Type	First order digital filtering
Read Cycle Time	Fast: 1 ms + 1 ms x number of channels used Nominal: 9 ms for 8 channels
Voltage Measurement Error	<= 0.08 % of full scale at 25 degC <= 0.1 % of full scale within 0...60 degC
Current Measurement Error	<= 0.15 % of full scale at 25 degC <= 0.3 % of full scale within 0...60 degC
Isolation Voltage	1400 V DC between channels and ground 1400 V DC between channels and bus
Isolation Status	Non-isolated between channels
Digital Value Format	+/- 10000 (default), +/- 32000 (user scale)
Mechanical Resistance	Vibration: 3 gn Shock: 30 gn
IP Degree of Protection	IP20

Backplane Bus Communication and I/O Density Scaling

The module interfaces directly with the Modicon X80 backplane bus, utilizing high-velocity backplane communication loops to maintain deterministic data transmission. By providing 8 high-level analog channels within a single slot, the hardware optimizes I/O density scaling for multi-channel instrumentation topographies without requiring extra rack space. This bus integration ensures synchronous acquisition cycles across all active channels, matching the firmware processing execution speed required by the host central processing unit.

Frequently Asked Questions

Q: Does the module support channel-to-channel isolation?

A: No, the module inputs are non-isolated from each other. However, the hardware provides 1400 V DC galvanic isolation between the internal channels and the backplane bus, as well as between the channels and the chassis ground.

Q: How is the conversion of current inputs managed internally?

A: The module contains an internal 250 Ohm conversion resistor with a precision rating of 0.1 % and a low temperature drift of -15 ppm/degC to transform incoming current loops into readable voltage steps for the 16-bit analog-to-digital converter.

Field Installation Guidelines

• Wiring Connection: Terminate all external signal wiring through the dedicated 28-way single connector. Ensure that current and voltage inputs conform strictly to the assigned terminal mapping.
• Shielding Regulations: Utilize twisted shielded pairs for all low-level signal lines. Connect the cable shields directly to the functional ground bar of the rack enclosure to minimize electromagnetic interference.
• Environmental Clearances: Maintain standard spacing requirements around the Modicon X80 rack to allow natural thermal dissipation, ensuring ambient temperatures inside the cabinet do not exceed 60 degC.
• Overload Protection Constraints: Do not apply signals exceeding the permitted overload thresholds (+/- 30 mA for current loops and +/- 30 V for voltage ranges) to prevent permanent deterioration of the internal measurement circuitry.

Specifications

• Brand: Schneider Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems