Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 230)

Chapter 7
Programming Parameters
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Parameter 726– SCR Overtemperature Delay [SCR Overtemp
Delay]
Internal units : Seconds x 10
Programming Terminal units: Seconds
Minimum Value: 0.1
Maximum Value: 3276.7
Default Value: 1.0
Description: This parameter specifies the length of time that the
heatsink overtemperature discrete input must be low before an SCR
overtemperature fault will be indicated.
Parameter 727– Stall Delay [Stall Delay]
Internal units : Seconds x 10
Programming Terminal units: Seconds
Minimum Value: 0
Maximum Value: 100.0
Default Value: 10.0
Description: This parameter specifies the length of time that the drive
must be in current limit and at zero speed before a stall fault will be
indicated.
Parameter 728 – AC Line Tolerance Delay [AC Line Tol Delay]
Internal units : Seconds x 10
Programming Terminal units: Seconds
Minimum Value: 0
Maximum Value: 1.0
Default Value: 0.1
Description: This parameter specifies the length of time that the
supply voltage is allowed to deviate by more than +15% or –20% of
the rated value (Parameter 617) before a voltage out of tolerance fault
will be indicated.
Parameter 729– Field Fault Threshold [Fld Flt Thresh]
Internal units : 4096 = 1000h = 1 PU = 100% rated motor field
current
Programming Terminal units: Percent rated field current
Minimum Value: 0%
Maximum Value: 100%
Default Value: 30%
Description: This parameter is used to set the threshold for activating
the motor field loss fault in the CP fault word (Parameter 101, bit 6).
Internally, if the field current reference (Parameter 117) is greater
than the field current threshold (Parameter 729) and the field current
feedback (Parameter 118) is less than 10% of threshold, a field loss
fault occurs. A value of zero disables the field loss fault detection.