Manual

Chapter 5
Programming Parameters
5–57
Di/DT Limit
[Di/Dt Limit]
This parameter determines the largest al-
lowable rate of change for the Iq reference
signal. This number is scaled in units of
maximum per unit Iq every 2 msec.
Parameter Number 181
Parameter Type Sink
Display Units x.x%
Drive Units 4096 = 100.0% Iq per 2msec
Factory Default 20.0%
Minimum Value 0.0%
Maximum Value 30.0%
Torque Limit Status
[Torq Lmt Stat]
Parameter Number 183
Parameter Type Source
Display Units Bits
Drive Units None
Factory Default 0000 0000 0000 0000
Minimum Value 0000 0000 0000 0000
Maximum Value 1111 1111 1111 1111
Enums:
This parameter provides a bit coded sum-
mary of any condition that may be limiting
either the IQ current or torque reference.
0 = Positive Motor IQ Limit
1 = Positive NTC Inverter Foldback
2 = Positive IT Inverter Foldback
3 = Positive Maximum Inverter Current
4 = Positive Torque Limit
5 = Positive Torque Power Limit
6 = Positive Autotune Torque
7 = Not Used
8 = Negative Motor Iq Limit
9 = Negative NTC Inverter Protection Foldback
10 = Negative IT Inverter Protection Foldback
11 = Negative Maximum Inverter Current
12 = Negative Torque Limit
13 = Negative Torque Power Limit
14 = Negative Autotune Torque Limit
15 = Reserved, Leave Zero
Computed Power
[Computed Power]
Calculated product of Torque Reference
time motor velocity feedback. A 125 msec
filter is applied to this result. Positive
values indicate motoring power, negative
regenerative power.
Parameter Number 182
Parameter Type Source
Display Units +/–x.x%
Drive Units 4096 @ 100.0% power
Factory Default +0.0%
Minimum Value –800.0%
Maximum Value +800.0%
Torque Mode Status
[Torq Mode Stat]
Parameter Number 184
Parameter Type Source
Display Units Bits
Drive Units None
Factory Default 0000 0000 0000 0000
Minimum Value 0000 0000 0000 0000
Maximum Value 1111 1111 1111 1111
Enums:
This parameter provides a bit coded indica-
tion of the currently active torque mode. If
the drive is running, this parameter reflects
the Torque Mode selected in Torque Mode
Sel (P 53). If the drive is coasting or
stopped this parameter will indicate the ac-
tive torque mode is zero. If in min or max
mode, then the corresponding min/max bit
will be set along with the appropriate speed
or torque mode bit, as determined by the
outcome of the min/max selector.
Bits are defined as:
Bit 0 – Zero Torque (Iq = 0)
Bit 1 – Speed Mode
Bit 2 – Torque Mode
Bit 3 – Minimum Speed/Torque
Bit 4 – Maximum Speed/Torque
Bit 5 – Sum Speed + Torque
Bit 6 to Bit 15 – Reserved, Leave Zero
Perunit Motor Current
[Motor Cur Fdbk]
Parameter Number 185
Parameter Type Source
Display Units x.x%
Drive Units 4096 = 100% motor current
Factory Default 0.0%
Minimum Value 0.0%
Maximum Value 800.0%
Displays the perunit value of motor current
as determined from the LEM current sen-
sors. This data is scaled to read 1.0 pu at
rated motor current. This is a version of
parameter 264 that has been scaled to be
compatible with analog outputs. This data
is averaged and updated on a 50 millisec-
ond basis.