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SMU-03

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SMU-03 is an ABB serial measurement unit that processes robot resolver feedback and retains revolution-counter data through the measurement system battery backup.
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Technical specifications for SMU-03

  • Manufacturer:
    ABB
  • Part Number:
    SMU-03
  • Product Family:
    ABB Robots
  • Product Type:
    Serial Measurement Unit
  • Stock:
    1
  • Measurement network:
    Measurement link
  • Feedback signals:
    X and Y resolver signals
  • Board communication:
    Serial measurement system (SMS)
  • Retained data:
    Revolution counter data
  • Battery supervision:
    Low charge, failure, and backup-loss monitoring
  • Board diagnostics:
    Offset, linearity, resolver, transmission, and configuration faults
  • Weight:
    0.74 kg
  • Estimated shipping dimensions:
    24.9 x 2.6 x 13.2 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Resolver Signals Measurement Link Fault Isolation Product Applications

Features:

  • Resolver processing: X and Y resolver feedback supports robot-axis measurement
  • Counter retention: battery backup preserves revolution-counter data when main power is removed
  • Diagnostic coverage: the measurement system reports signal, communication, and configuration faults
SMU-03 belongs to the robot measurement path, where resolver feedback and stored revolution-counter data support axis position tracking.

Its fault reporting separates signal-quality problems from measurement-link communication and missing configuration data.

A controlled service record should connect the unit label, controller events, resolver cabling, battery state, and revolution-counter recovery result.
Apter Power can review SMU-03 measurement-system evidence, condition, documentation, and sourcing requirements.
ABB SMU-03 Serial Measurement Unit Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Signal channels: the board supervises X and Y resolver feedback used by the robot measurement system.
  • Quality checks: offset and linearity events help separate degraded feedback from a missing board.
  • Voltage limits: high- or low-signal events direct inspection toward the resolver and its cable path.
  • Board discovery: a serial-board-not-found event requires configuration, node, and link checks.
  • SMS traffic: communication and transmission events identify failures in the measurement-system data path.
  • Configuration data: missing board data must be resolved before position feedback is trusted in production.
  • Resolver boundary: inspect signal wiring and connectors before attributing offset or voltage faults to the unit.
  • Communication boundary: separate measurement-link cabling from board configuration and controller faults.
  • Recovery evidence: retain event codes and revolution-counter results after the measured axis is restored.
  • Robot position feedback: process resolver information within the supported ABB measurement system.
  • Measurement-link diagnostics: isolate board, cable, configuration, and feedback-signal faults.
  • Counter-data recovery: restore and verify robot revolution counters after approved service work.
Description
SMU-03 is an ABB serial measurement unit in the robot measurement path. It receives resolver feedback and maintains the revolution-counter information used to relate measured motor position to the robot axis state.

During operation, SMU-03 participates in the measurement link and reports distinct fault classes for resolver voltage, offset, linearity, communication, and missing configuration data. These diagnostics help separate a feedback-path problem from a controller or board-discovery issue.

Before replacing SMU-03, preserve the active event codes, resolver-cable routing, controller and robot records, battery state, and existing revolution-counter values. After approved service, verify the measurement link and complete the required counter update before production motion.
Alternative Names
ABB SMU03 measurement unit SMU 03 robot measurement module ABB serial measurement unit SMU03 robot SMU measurement board
Technical notes
SMU-03 relies on battery backup to retain robot revolution-counter data when main power is removed. A discharged or disconnected battery can erase that data and trigger repeated warnings. Keep controller power available during battery service when the robot manual requires it, then update revolution counters through the specified ABB procedure.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What should be checked when SMU-03 reports a resolver voltage fault on one axis?
Use the X or Y channel named by the event to inspect the resolver, connector seating, cable continuity, shielding, and signal path. Compare related offset or linearity events before replacing the measurement unit.
Why can SMU-03 produce repeated revolution-counter warnings after a battery event?
Loss of backup power can erase retained counter data. Confirm battery condition and connections, then follow the ABB procedure to update revolution counters and verify the measured robot position before returning the axis to service.
How should a serial-board-not-found event involving SMU-03 be investigated?
Check the configured board identity, measurement-link node, connectors, cable continuity, controller records, and related SMS communication events. A missing configuration or link fault can prevent discovery even when the unit has power.
What does an offset or linearity event from SMU-03 tell a maintenance engineer?
It points to resolver-feedback quality rather than merely a lost network connection. Preserve the exact event and axis, inspect the resolver and cable path, and compare voltage or communication faults before selecting the corrective action.
Why should configuration data be verified before SMU-03 is accepted after replacement?
The measurement system must associate the installed board and resolver path with the correct controller configuration. Resolve any data-not-found event and confirm valid position feedback before production movement is authorized.
What information makes an SMU-03 RFQ useful for an ABB robot outage?
Send readable unit, robot, and controller labels; measurement-link and resolver-cable photographs; battery condition; active event codes; quantity; destination; and outage timing. Include whether revolution-counter recovery will be required after installation.