Description
Schneider Electric BMXAMO0802 Analog Output Module X80
The Schneider Electric BMXAMO0802 (BMXAMO0802 analog output module) serves as the primary BMXAMO0802 analog output module utilized to execute multi-channel current signal generation across Modicon X80 PLC platforms.
Configured for deterministic analog signal actuation in rack-based I/O systems, the Schneider Electric BMXAMO0802 delivers 8-channel current output conversion with 16-bit resolution and rack-powered internal supply operation. Output scaling and diagnostic feedback are handled through backplane-controlled cyclic updates with configurable fallback behavior under fault conditions.
Suffix Break down & Model Matrix
No official structured suffix decoding or segmented model matrix information is provided in the supplied technical data for BMXAMO0802. The identifier is treated as a single catalog reference for the Modicon X80 analog output module family.
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Schneider Electric BMXAMO0802 |
| Origin |
Not specified in provided data |
| Weight |
0.15 kg |
| PowerConsumption |
Internal rack supply (value not specified) |
| Analog Output Channels |
8 |
| Output Types |
0-20 mA, 4-20 mA |
| Output Resolution |
16 bits |
| Conversion Time |
<= 4 ms |
| Load Impedance |
<= 350 Ohm |
| Output Range |
Up to 21 mA (overrange capability) |
| Isolation |
1400 VDC channel to ground, 1400 VDC channel to bus |
| Crosstalk Attenuation |
80 dB minimum |
| Common Mode Rejection |
80 dB |
| Temperature Drift |
45 ppm per degC |
| Measurement Error |
<= 0.25 percent FS (0 to 60 degC), 0.1 percent FS at 25 degC |
| Diagnostics |
Open circuit detection (4-20 mA), short circuit detection (0-20 mA) |
| Status Indication |
RUN, ERR, I/O, per-channel LED indicators |
| Operating Altitude |
0 to 2000 m, derating 2000 to 5000 m |
PLC Backplane Output Control and Deterministic Update Behavior
The BMXAMO0802 module operates through Modicon X80 backplane communication cycles where analog setpoints are transferred as digital words and converted via 16-bit DAC stages into loop current outputs. The conversion pipeline is synchronized with rack scan timing, maintaining a maximum conversion latency of 4 ms per update cycle.
Channel outputs are non-isolated between each other, therefore signal integrity depends on internal grounding architecture and crosstalk attenuation performance of 80 dB. The module implements diagnostic monitoring for open loop and short circuit conditions, enabling fault-state substitution via configurable fallback mode.
Backplane integration ensures deterministic update behavior across PLC task cycles, with output regeneration linked directly to CPU scan scheduling and I/O refresh synchronization.
Frequently Asked Questions
Q: Does the BMXAMO0802 support hot swapping during rack operation?
A: The module is designed for rack-based installation; hot swapping depends on system configuration and rack power management state. Electrical reconnection during active loop current should be avoided.
Q: What happens if a 4-20 mA loop is broken?
A: The module detects open circuit conditions in 4-20 mA mode and triggers diagnostic status via channel LED and system feedback.
Q: Is channel-to-channel isolation present in this module?
A: No. Channels are non-isolated; isolation is provided only between channels and ground/bus at 1400 VDC level.
Field Installation Guidelines
Ensure rack power is isolated before module insertion or removal to prevent transient backplane disturbance. Field wiring for current outputs must maintain correct polarity and loop integrity, especially for 4-20 mA transmitter-driven loads.
Use shielded twisted pair conductors for analog output loops, with shield termination performed at a single system ground reference point to reduce induced noise coupling. Keep output wiring separated from high-frequency switching or power conductors.
Verify load impedance does not exceed 350 Ohm per channel to maintain output accuracy and DAC linearity. Incorrect loading may result in clipping at maximum output current levels.
