Current And Ground Fault Protection - Toshiba TE2 Series Instruction Manual

TE2 Series Digital Solid State Soft Starter User Manual
F037 = Under Voltage on Run Trip Delay
Factory Setting = 2 seconds
Range = 1 - 20 seconds
Provides a time delay to prevent nuisance trips from short-
duration transients. Using default setting, if the percent
difference in voltage between any two input phases equals or is
greater than the value set in F036 for more than 2 seconds the
starter will trip.
 Note:
Under Voltage and Over Voltage Trip settings may conflict
with Voltage Imbalance Trip settings set in F030 and F031.
If a voltage anomaly occurs that is out of range of any
feature, the one with the lowest settings and fastest trip
time will take precedence.
5.6.8 Current and Ground Fault Protection Features
F038 - F050 set extended protection features that may be used in the
TE2 Series starter. Percentages shown are all based automatically
upon the Motor FLA setting from F001 except Ground Fault, F046. No
additional calculations are necessary.
 Note:
All of these features are disabled at the factory and must be
enabled via user programming as follows:
F038 = Shorted SCR Trip Delay
Factory Setting = 1 seconds
Range = 1 - 10 seconds, 0 (Disabled)
Sets the delay time before the starter will trip after a shorted
SCR is detected.
F039 = Shunt Trip Delay
Factory Setting = 1 seconds
Range = 1 - 10 seconds, 0 (Disabled)
Sets the delay time before starter will trip after detection of
current flow through any of the phases while the starter is in Off
state.
F040 = Current Imbalance Trip
Factory Setting = 0 (Disabled)
Range = 5 - 30% or 0 (Disabled)
Sets the percentage of current imbalance between any two
phases that will cause a trip. The trip delay time is set in F041.
F041 = Current Imbalance Trip Delay
Factory Setting = 2 seconds
Range = 1 - 20 seconds
Provides a time delay to prevent nuisance trips from short-
duration transients.
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