Install at the cabinet.
Three-phase voltage and current. Voltage direct up to 690 V line to line, through PTs above that; current through CTs. DOL, star-delta, soft-starter and VFD-fed motors. No motor size ceiling.
WATCH e-MCM
Artesis e-MCM: continuous monitoring from the motor control cabinet.
HOW IT WORKS
Three steps.
Then it keeps watching.
Current and voltage carry information about the motor and the load it drives. e-MCM measures them continuously at the cabinet and compares each reading with the model it learned for that machine.
Learn the machine.
e-MCM builds a model of each machine from its own electrical behaviour, across the load and speed points it runs at. After an overhaul it relearns, so the repaired condition becomes the new reference.
Watch and report.
Each reading is compared with the model. Persistent deviations are flagged by fault category in Normal, Caution and High; operating-point clustering and persistence reduce false alarms. Findings go to OmniSight, where Artesis Insight AI writes them up.
STATOR HEALTH
Watch the stator
while it runs.
e-MCM learns each motor's electrical model and checks the stator against it continuously, at each operating point it has learned. Four checks run together.
Model drift
The motor's internal electrical parameters are recalculated continuously and compared with the learned model. A persistent rise flags a developing motor-side condition.
Affected phase
Negative-sequence current is trended in amplitude and phase angle, which identifies the phase involved.
Stator patterns
Stator-related patterns in the current spectrum are tracked against the learned baseline.
Supply or winding
Current imbalance is judged against voltage imbalance, so a supply problem is not reported as a winding fault.
WINDING OR CONNECTION
Two patterns, told apart.
The stator engine separates a turn-to-turn winding pattern from a high-resistance connection pattern and identifies the affected phase. It reports the pattern, not a severity.
HOW A STATOR FINDING READSStator indication present, with the affected phase identified. Recommend inspection or surge test to confirm the specific cause.
INSULATION
On motors, progressive insulation-related trends are tracked too. Confirm with a Megger, surge comparison or PD test.
OFFLINE ONLY
Early-stage insulation changes, open circuits, phase-to-ground faults and shorted laminations need a de-energized test. Online monitoring does not cover them.
IN THE FIELD
A 355 kW pump motor.
Flagged, fixed, checked again.
A 6.6 kV, 355 kW vertical pump motor was monitored with e-MCM. Its Internal Electrical parameter moved into Caution. The site inspected and overhauled the motor, and used e-MCM to check whether each fix had worked.
e-MCM → FOUND ON SITE
e-MCM flagged a developing motor-side condition. An offline test followed.
Water condensation in the main terminal box, rust marks at the spigots and end shields, low insulation resistance.
Stator washed, baked and varnished. e-MCM still showed the Internal Electrical fault.
Two space heaters fitted at the winding overhang. e-MCM then relearned the motor.
Internal Electrical is now within the normal range. Monitoring continues.
MORE FROM THE FIELD
ELECTRICAL · SUPPLY
Hot connections.
Found and re-terminated.
On a positive displacement blower at a US water facility, e-MCM flagged the external electrical category, and the bearing trend rose with it. An infrared scan found hot spots at the weather head and corroded connections at the motor and the MCC. After re-termination both trends dropped and stayed down.
"We would have never found the fault without the Artesis MCSA system."Monty Sedlak, Project Director, Jacobs
MECHANICAL
Unbalance alert.
A dented impeller.
On a 3.3 kV deep-well submersible raw water pump, e-MCM flagged unbalance and looseness. The plant's separate vibration sensor on the pump casing read high on the suction side. When the pump was pulled, wooden debris had dented the impeller.
Photos and reports from customer sites, shared by Artesis partners and customers. Findings are shown the way e-MCM reports them: by category, then confirmed on the machine.
CONTINUOUS MONITORING
What watching adds
to a single test.
A portable test shows the motor on the day it is tested. e-MCM follows it between tests.
CONFIRM THE FIX
See whether the repair worked.
After maintenance, the fault category should fall back. If it does not, as with the pump motor above, the trend shows it.
RELEARN
A new reference after an overhaul.
After an overhaul or a process change, e-MCM relearns the motor, so the repaired condition becomes the baseline.
COME AND GO
Faults that are not there on test day.
Supply events, load changes and faults that appear only at certain operating points are recorded when they happen.
ALARMS
Alerts where your team works.
Relay outputs for local alarms, and data to SCADA, DCS and existing monitoring platforms.
FAULT CATEGORIESStatorRotorBearingUnbalance, misalignment, couplingLoose foundation and componentsTransmission and driven equipmentExternal electrical (supply and connections)Power qualityLoad and process-related indications
THE e-MCM UNIT
One unit per motor.
In the cabinet.
e-MCM mounts in the motor control cabinet and measures three-phase voltage and current. Results show on the unit, go to your plant systems, and feed OmniSight in the cloud or on premises.
Inputs
Voltage direct up to 690 V line to line, through PTs above that. Current through CTs, up to 2,500 A.
Motors and drives
DOL, star-delta, soft-starter and VFD-fed motors, 15 to 120 Hz. No motor size ceiling.
On the unit
Display with measurements and fault status, status LEDs, and relay outputs for alarms.
Integration
Modbus TCP over Ethernet, and Modbus RTU over RS-485 for metering values. Connects to SCADA, DCS and existing monitoring platforms.
Power and energy
Voltage, current, power, power factor, imbalance, harmonics and energy use on each monitored motor.
With OmniSight
Fleet view, Artesis Insight reports, cost analysis and pump performance. Explore OmniSight.
BEFORE YOU INSTALL
Requirements
and boundaries.
What an installation needs on site, and where continuous monitoring stops.
WHAT YOU NEED ON SITE
- Three-phase voltage and current at the motor control cabinet.
- PTs and CTs on medium-voltage motors. Existing CTs can be used where suitable.
- Control power for the unit: 100 to 240 V AC, or DC.
- Nameplate data. Bearing model for bearing-specific markers; pump datasheet for pump performance.
- A network connection for OmniSight and plant systems.
- A learning period at the motor's normal operating points before findings are reported.
WHAT IT DOES NOT DO
- It reports fault categories, not a specific sub-mode or a severity scale. The recommended check confirms the cause.
- Early-stage insulation changes, open circuits, phase-to-ground faults and shorted laminations need an offline test.
- Findings are not reported before the motor's model is learned.
- Captures taken during large load swings are not analysed.
- Pump flow and head are estimates, shown with their bounds, where the pump curve supports them.
e-MCM AND AMTPro
Continuous for critical assets.
Portable for the rest.
The two work together but do not do the same job. e-MCM learns each motor's model and watches it continuously, which gives the deeper stator assessment and, with OmniSight, pump performance. AMTPro tests the rest of the plant on a route, with its own report and Artesis Insight write-up. Used together, they cover your motor fleet, with the level of monitoring matched to each asset's criticality.
e-MCM · CONTINUOUS MONITORING
Pick the motors
to watch first.
Tell us what you run. We will look at where continuous monitoring fits and what an installation needs.
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