Level Simulation Mode; Maintenance Mode - MultiTrode MultiSmart Installation & Operation Manual

9.4 Level Simulation Mode

9.4.1 Simulating Levels for Safety/Commissioning Purposes
The pump station manager can simulate levels for safety or commissioning purposes. This function allows
the level to be increased or decreased in 1% steps from the keypad. Use this feature to test the control panel
before it is installed at the pump station.
Navigate to the Level Simulation screen:
Figure 79 – Simulating Levels
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Press the Level Simulation button.
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The time remaining starts counting down. Simulation mode automatically turns off at zero.
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Press the Home key.
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Use the up and down arrows on the keypad to raise or lower the simulated level.
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When the tests on the station are complete, either let the level simulation time out, or go back to
the level simulation page and press the Level Simulation button to turn it off.
Health and Safety Feature: This feature allows operators to test pump and alarm levels without
having to open the pit cover to move the level sensing device.
WARNING: The pumps respond to the simulated level exactly as they would to a real level.
Therefore, it is possible to run the pumps with no actual liquid IN THE WELL, thereby running the
pumps dry and damaging them.

9.5 Maintenance Mode

When a unit is placed into Maintenance Mode, all controls from SCADA via DNP3 and Modbus are
disabled. This provides a level of isolation for operators, for example preventing remote control of pumps.
(Local control is not affected).
Additionally, all of the tags sent to SCADA by DNP3 are be flagged as suspect (not by Modbus because
Modbus tags do not have this capability). This means the SCADA system can be programmed not to create
alarms from this station while in maintenance mode.
An event is generated for maintenance mode when activated (if it exists in the DNP3 points list) and the
status will be received by the SCADA system.
Page 72 of 260
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