Rockwell Automation 1397 DC Drive Firmware 2.xx - Manual (Page 173)

5–63 Programming Parameters
Publication 1397-5.0 — June, 2001
DIAGNOSTICS
[Open SCR Trip Pt] — P.168
Open SCR trip threshold. Extremely unusual
load conditions or severe current loop
instability can cause nuisance open SCR
faults. Increasing this input will increase the
tolerance of such disturbances. Display/Drive Units: %
Parameter Type: Tunable
Group: Diagnostics
Factory Default: 800
Minimum Value: 800
Maximum Value: 4000
[Phase Tst Delta] — P.169 FACTORY TEST PARAMETER, NOT FOR CUSTOMER USE
The test firing conduction angle of the SCRs.
If equal to 0, the armature power bridge is off.
If it is set to 180, the armature power bridge is
fully on. Display/Drive Units: Degree
Parameter Type: Tunable
Group: Diagnostics
Factory Default: 0
Minimum Value: 0
Maximum Value: 180
ATTENTION: The armature phase fire test is unregulated. To prevent
excess motor speed, either disconnect the armature leads from the drive
and replace with a similar load or disconnect the field leads from the
drive. Lock the motor armature shaft securely to prevent rotation in
either direction prior to selecting this test.
[Phase Tst Bridge] — P.170 FACTORY TEST PARAMETER, NOT FOR CUSTOMER USE
Selects which armature bridge (forward or
reverse) is used during the phase fire test.
This input can only be changed while the
drive is stopped.
OFF selects the forward bridge (A1 positive
with respect to A2). ON selects the reverse
bridge (A1 negative with respect to A2). Display/Drive Units: Selection
Parameter Type: Tunable
Group: Diagnostics
Factory Default: Forward
Minimum Value: Forward (Off)
Maximum Value: Reverse (On)
[Armature Bridge] — P.171
Shows which armature bridge in the drive is
currently active. Display/Drive Units: Numeric/Text
Parameter Range: 0 = Forward
1 = Reverse
Parameter Type: Output
Group: Diagnostics
Factory Default: 0 (Forward)
Minimum Value: 0 (Forward)
Maximum Value: 1 (Reverse)