McQuay RVSS14 Installation, Operation And Maintenance Manual page 26

Starters for centrifugal chillers low voltage, solid state and wye-delta medium/high voltage, solid state and across-the-line
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Default
The default value for the maximum current is 600%.
Ramp Time
Description
The ramp time sets the amount of time that it takes for the starter to linearly increase the
current from the initial current level to the maximum current level. A typical ramp time
setting is from 15 to 30 seconds.
Settings
The ramp time is adjustable from 0 to 120 seconds in 1 second intervals.
Default
The default value for the ramp time is 15 seconds.
Overload
Default
The default value for the overload parameter is 10.
Phase Order
Description
The line phasing parameter sets the phase sensitivity of the starter. This can be used to protect
the motor from a possible change in the incoming phase sequence. If the incoming phase
sequence does not match the set phase rotation, the starter will display phs err while stopped
and will fault if a start is attempted.
Values
The line phasing can be set to:
Default
The default value for the phase sensitivity parameter is ABC.
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• INS - will run with either phase sequence
• ABC - will only run with ABC phase sequence
• CBA - will only run with CBA phase sequence
IOMM Starter

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