COMPRESSOR INSTALLATION & START-UP GUIDE
REVISION M
34
Chapter - 16. Slide Amp Calculation
16.1. Slide Amp Calculation through MCS-Connect
MCS Controls with a Hanbell Infinite Control (stepless) compressor, you need to follow these
steps when commissioning the compressor to ensure correct operation.
Revision 09-17-2019
2
General Concept
Not all compressors will run exactly at the full load amperage rating that the manufacturer provides. Likely
it will be very close, but some fine tuning of the configuration will enable the operator to maximize efficiency
and control of the unit. This manual is designed to walk you through the steps of adjusting your slide amp
calculation through MCS-Connect for optimum performance of your system.
1. Setting the Upper Limit
a. Use MCS-Connect to link with the Magnum control
board and get authorized at Supervisor or Factory
level.
b. While the compressor is running near design
conditions, turn the UNLOAD relay manually OFF,
and the LOAD relay manually ON.
c. Wait until the compressor is fully loaded. Then
check the value in the FLA% in the circuit grid for
that compressor.
•
If the FLA% is 101 or above, then increase the slide offset.
•
If the FLA% is 97 or below, decrease the slide offset.
d.
To access the slide offset you must first have the proper
authorization level to make changes to the unit. Double-click
on the relay for the compressor you are tuning (in this example
COMP is the name of the relay output).
e. A window will pop up (as shown on right) with the slide amp
calculation. Increase or decrease the “Slide Offset” value and
press the OK button to accept the changes.
f.
Check the FLA% value again. It should say 99 or 100. If not,
then repeat steps C and D again until you reach a value of 99 or
100.
98
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