User guide

Configuring the Current Minor Loop
6-9
6.4 Configuring the CML Forward Path
The proportional-integral (
PI
) controller adjusts the armature firing angle,
ARMATURE
DELTA
(P.399), to compensate for any difference between the reference and the
feedback signals. When the drive is stopped, this block’s output is clamped to zero.
Proportional gain is set by
CML PI PROP GAIN
(P.301). The integral time constant can be
changed by adjusting
CML PI LEAD FREQUENCY
(P.302)
Drive Current Transformer Turns Ratio (Tp/Tn) Value to Enter
1.5 HP @ 230 VAC / 3 HP @ 460 VAC 139
2 thru 7.5 HP @ 230 VAC / 5 thru 15 HP @ 460 VAC 208
10 thru 15 HP @ 230 VAC / 20 thru 30 HP @ 460 VAC 417
20 thru 30 HP @ 230 VAC / 40 thru 60 HP @ 460 VAC 833
40 thru 75 HP @ 230 VAC / 75 thru 150 HP @ 460 VAC 2000
100 thru 150 HP @ 230 VAC / 200 thru 300 HP @ 460 VAC 5230
400 to 600 HP @ 460 VAC 7770
7A 139
29A 208
55A 417
110A 833
265A 2000
ARMATURE BRIDGE POL
(P.394)
Indicates which
bridge is currently
active.
OFF
indicates
the forward bridge.
ON
indicates the
reverse bridge.
Parameter Range:
OFF
ON
Default Setting:
n/a
Parameter Type:
Output
OIM Menu Path(s):
Current Minor Loop (
CML
) -
CML
Test Points