BMXAMO0802RU

Configured for analog current signal generation in Modicon X80 automation systems, the Schneider Electric BMXAMO0802RU (BMXAMO0802RU Analog Output Module) provides eight non-isolated high-level outputs with 16-bit resolution. It supports 0 to 20 mA and 4 to 20 mA signals, with output conversion time up to 4 ms and load impedance up to 350 ohms.

Hardware Specifications

Parameter	Specification
Model	BMXAMO0802RU
Brand	Schneider Electric
Series	Modicon X80
Module Type	Analog Output Module, non-isolated
Number of Channels	8
Output Signal	0 to 20 mA, 4 to 20 mA
Resolution	16 bits
Measurement Accuracy	<= 0.25% full scale at 0 to 60 deg C; 0.1% full scale at 25 deg C
Temperature Drift	45 ppm/deg C
Isolation Voltage	1400 VDC, channel-to-earth and channel-to-bus
Load Impedance	<= 350 ohms
Conversion Time	<= 4 ms
Cross-talk Attenuation	>= 80 dB
EMI/RFI Noise Rejection	>= 80 dB, 100 kHz to 10 MHz
Fault Detection	Open circuit for 4 to 20 mA; short circuit for 0 to 20 mA
Power Supply	Internal backplane supply, 3.3 VDC and 24 VDC
Power Consumption	3.6 W typical / 3.9 W maximum at 24 VDC; 0.35 W typical / 0.48 W maximum at 3.3 VDC
Current Consumption	150 mA at 3.3 VDC; 135 mA at 24 VDC
Operating Temp	0 to 60 deg C
Storage Temp	-40 to 85 deg C
Relative Humidity	5% to 95%, non-condensing at 55 deg C
Vibration Resistance	3 gn
Shock Resistance	30 gn
Protection Rating	IP20
Altitude	Up to 2000 m; up to 5000 m with derating
Connection	20-way connector
Indicators	1 green RUN LED, 8 green channel diagnostic LEDs, 1 red ERR LED, 1 red I/O LED
Dimensions	32 x 100 x 86 mm
Weight	0.15 kg

Backplane Integration and I/O Density Scaling

The BMXAMO0802RU receives its operating power internally from the Modicon X80 backplane through 3.3 VDC and 24 VDC supplies. The module provides eight analog current channels in a 32 mm wide housing, allowing multiple output channels to be integrated within the X80 I/O architecture.

Each channel supports 0 to 20 mA or 4 to 20 mA operation. The specified conversion time is <= 4 ms, while cross-talk attenuation and EMI/RFI noise rejection are both specified at >= 80 dB. Channel diagnostics are provided through individual green LEDs, with separate RUN, ERR, and I/O status indication.

Frequently Asked Questions

Q: Does the BMXAMO0802RU provide isolated analog output channels?
A: No. The module is specified as an 8-channel non-isolated analog output module. The supplied data specifies 1400 VDC isolation from channel-to-earth and channel-to-bus.

Q: What output load can each analog channel drive?
A: The specified load impedance is <= 350 ohms for both 0 to 20 mA and 4 to 20 mA operation.

Q: How is the module powered?
A: Power is supplied internally through the Modicon X80 backplane at 3.3 VDC and 24 VDC. The specified current consumption is 150 mA at 3.3 VDC and 135 mA at 24 VDC.

Field Installation Guidelines

Install the module in the designated Modicon X80 rack position and secure the 20-way connector according to the applicable X80 installation procedure.

Route analog output wiring separately from high-voltage power conductors and high-current switching circuits where practical. Maintain appropriate separation from sources of electromagnetic interference.

For 4 to 20 mA circuits, verify loop polarity and field-device compatibility before energizing the channel. Inspect the wiring for open circuits or short circuits before commissioning.

Connect cable shields according to the system grounding design and applicable Schneider Electric installation documentation. Do not introduce unintended shield-current paths between field devices and control-system grounding points.

Verify that the rack power budget accounts for the module consumption of 3.6 W typical and 3.9 W maximum at 24 VDC, together with the specified 3.3 VDC load.

Confirm the operating environment remains within 0 to 60 deg C and the specified humidity, vibration, shock, and altitude limits before placing the module into service.

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