Input Inductance; Regen Status; Regen Restart Mode - Emerson unidrive sp User Manual

Menu 3 Parameter Keypad and
Regen structure display

Input inductance

3.02
Drive modes Regen
Coding Bit SP
Range Regen
Update rate Background write
At power-up this parameter is zero. Each time the regen unit is enabled the supply inductance is measured and displayed by this parameter. The
value given is only approximate, but will give an indication as whether the input inductance is correct for the sinusoidal rectifier unit size. The
sinusoidal filter capacitance masks the effect of the supply inductance, therefore the value measured is usually the regen unit input inductor value.

Regen status

3.03
Drive modes Regen
Coding Bit SP
Range Regen
Update rate 4ms write
If an L.Sync trip occurs Pr 3.03 indicates the reason. At power-up and on trip reset this parameter is set to zero. Once an L.Sync trip has occurred this
parameter shows when the trip occurred and the reason for the last L.Sync trip as indicated by the bits in the table below. The reasons for the trip are
either because the supply frequency is out of range or the PLL (phase lock loop) within the drive cannot synchronize to the supply waveforms.
Bit
0 Tripped during synchronisation
1 Tripped while running
2 Reason for trip was supply frequency <30.0Hz
3 Reason for trip was supply frequency >100.0Hz
4 Reason for trip was PLL could not be synchronised

Regen restart mode

3.04
Drive modes Regen
Coding Bit SP
Range Regen
Default Regen
Update rate Background read
Pr 3.04 defines the action taken after enable and when a synchronization failure occurs.
0, rESYnC: Continuously attempt to re-synchronize
1, del.triP: delayed trip
Attempt to synchronize for 30s. If unsuccessful after this time then give a LI.SYnC trip. After a failure during running attempt to re-synchronize for 30s
before tripping.
2, triP: immediate trip
Attempt to synchronize for 30s. If unsuccessful after this time then give a LI.SYnC trip. After a failure during running, trip immediately.
84
Parameter Parameter
x.00 description format
FI DE Txt VM DP ND
3 1
0.000 to 500.000mH
FI DE Txt VM DP ND
1
0 to 31
Status
FI DE Txt VM DP ND
1
0 to 2
1
www.controltechniques.com
Advanced parameter
Macros
descriptions
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1 1
Serial comms Electronic
Performance RFC mode
protocol nameplate
PS
1
PS
1
PS
1
Unidrive SP Advanced User Guide
Issue Number: 10