Motor & Energy

Dry-Run Guard (Current)

Configure Dry-Run Guard (Current) in HPzenAi Smart. Detects dry running from motor current behavior.

What it does

Spot dry running from the motor current.

Detects dry running from motor current behavior. Use this automation when the selected field devices should work together without repeated manual setup.

CategoryMotor & Energy

Works with

Motor ControllersEnergy MetersLevel Sensors

Automation Logic

When

Trigger

Motor current drops below the dry-run pattern while the motor is running.

Default

Motor current drops below 4 A

Choices

Motor current drops below2 A4 A6 AEnter value

Example: choose "Motor current drops below" and keep the default 4 A, select another preset, or enter another value.

If

Condition

The condition remains after the configured start-up delay.

Default

Pump is running

Choices

Pump is runningNo condition

Example: choose "Pump is running" for the default if behavior.

Then

Action

Stop the motor and send a dry-run alert.

Default

Stop the motor and notify me

Choices

Stop the motor and notify meStop the motorOnly notify me

Example: choose "Stop the motor and notify me" for the default then behavior.

Active

Allowed Time

Use All day for motor protection.

Default

All day

Choices

All dayDay (6 AM - 6 PM)Night (6 PM - 6 AM)

Example: keep All day for protection workflows, or choose Day or Night when operation should stay inside site hours.

Automation Details

Recommended use

Pump motors where current changes reliably when water is not moving.

Device Inputs

Motor Controllers, Energy Meters, Level Sensors

Output Behavior

Stop the motor and send a dry-run alert.

Safety Note

Commission the threshold using real running current from the installed motor.

Test Method

Verify normal running current first, then test the trip threshold under supervision.

Visual reference coming soon

Future screenshot area for the Dry-Run Guard (Current) setup screen and saved Smart card.

Dry-Run Guard (Current) Walkthrough

Walkthrough video coming soon

Before You Start

Device Readiness

Link every device used by this workflow and confirm each one is online.

Device Selection

Choose the exact tank, pump, valve, relay, or meter that should be controlled.

Safe Test

Test with safe thresholds or manual observation before leaving the workflow enabled.

Guided Setup

Set Up Dry-Run Guard (Current)

Step 1 / 12

9:41

1

Open the HPzenAi app.

Step 1 / 12

Commissioning Checks

• Confirm the motor action or alert follows the selected protection condition.
• Verify normal running current first, then test the trip threshold under supervision.
• Confirm the saved card shows the correct workflow, devices, schedule, and enabled state.
• Review the event history after testing so the action is recorded as expected.
• Keep safety-critical workflows active all day unless the site needs a specific time window.

Troubleshooting

• If the Save button is disabled, complete every required trigger, condition, action, and timing field.
• If the workflow does not run, confirm the devices are online and the active time allows it to run now.
• If the action does not complete, check whether the target device is already in that state or cannot accept commands.
• If notification behavior is missing, confirm phone notification permission and recent device data.

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