MSC-3 Start Up
The G051 OVER SPEED parameter is a motor frequency compare threshold. When the motor frequency
is above this value, the relay will energise. For example the > OVER SPEED relay function has been
assigned to relay #2 (G040 RELAY #2 = OVER SPEED) and G051 OVER SPEED is set to 80%. When
the output frequency goes above 80%, relay 2 will energise.
G052 %L WARNING
G052 %L WARNING
Available Choices: > Low Speed Cal
> High Speed Cal
• Press once to begin input selection.
• Use the ▲ / ▼ buttons to select low or high speed calibration.
• Press to calibrate. ESC to abandon the change.
This menu calibrates the %load V speed characteristic curve of fans and pumps. The calibrated
characteristic is used as the compare threshold to warn of possible failures in motor and load
mechanics. The output of the %load warning feature is available as a relay function. The procedure for
calibration is:
1. Run the MSC-3 at half of full speed
2. Find the G052 %L WARNING menu, press and select > Low Speed CAL
3. Press again to calibrate at low speed
4. Run the MSC-3 at or near full speed
5. Return to the G052 %L WARNING menu, press and select > High Speed CAL
6. Press again to calibrate at high speed
7. Ensure >% LOAD WARNING function is assigned to one of the available relays
G06 REMOTE OVRD
G060 REMOTE OVRD
> DISABLED
Available Choices: ENABLED
DISABLED
• Press once to begin.
• Use the ▲ / ▼ buttons to enable or disable remote override operation.
• Press to conrm the choice.
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