BENSHAW RediStart MX2 SEP, User Manual

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6 - Parameter Descriptions
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PFN 09 / P27 Phase Loss Time
LCD / LED
Displays
PFN: Ph Loss Time
09 0.2
sec
Range 0.1 – 5.0 seconds (Default: 0.2)
Description The Phase Loss Time parameter sets the delay time on Fault 27 “Phase Loss”. This fault detects a loss of
proper phase timing even when the phasing remains valid; Example: loss of line when the motor back
generates a voltage
PFN 10 / P28 Over Frequency Level
LCD / LED
Displays
PFN: Over Frq Lvl
10 72
Hz
Range 24 – 72 Hz (Default: 72)
Description The Over Frequency Level parameter sets the highest line frequency that the controller will operate on.
When operating on line power, the default setting will usually suffice. If the application is speed sensitive, or
the line power is suspect, the high frequency parameter can be set to the highest acceptable frequency. When
operating on generator power, the high frequency parameter should be set to the highest acceptable
frequency. This will ensure that a generator problem will not cause unnecessarily large fluctuations in the
speed of the motor.
The frequency must be above the high frequency setting for the frequency delay parameter before the
controller will recognize a high frequency condition. Once a high frequency condition exists, the controller will
shut down and display a fault 13, “High Line Frequency” Trip.
PFN 11 / P29 Under Frequency Level
LCD / LED
Displays
PFN: Undr Frq Lvl
11 23
Hz
Range 23 – 71 Hz (Default: 23)
Description The Under Frequency Level parameter sets the lowest line frequency that the controller will operate on.
When operating on line power, the default setting will usually suffice. If the application is speed sensitive, or
the line power is suspect, the low frequency parameter can be set to the lowest acceptable frequency. When
operating on generator power, the low frequency parameter should be set to the lowest acceptable frequency.
This will ensure that a generator problem will not cause unnecessarily large fluctuations in the speed of the
motor.
The frequency must be below the low frequency setting for the frequency delay parameter before the controller
will recognize a low frequency condition. Once a low frequency condition exists, the controller will shut down
and display a Fault 12, “Low Line Frequency” Trip.
0 .2
72
23