Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 72)

6-2 FlexPak 3000 DC Drive Software Reference
6.1 Configuring Inertia Compensation
INERTIA COMP SELECT
(P.221)
Selects the source of
the inertia
compensation signal.
The analog input
choices are only
available if the I/O
Expansion kit is
installed.
Parameter Range: NONE
INTERNAL
ANALOG IN 1
ANALOG IN 2
NETW IN REG 1
NETW IN REG 2
NETW IN REG 3
Default Setting: NONE
Parameter Type: Configurable
OIM Menu Path(s): Speed/Voltage Loop ( SPD ) - Speed/Voltage Loop
( SPD ) Tuning
When INTERNAL is selected, the inertia compensation signal is generated by scaling
the rate output from the speed/voltage loop S-curve block based on the combined
inertia of the motor and its connected load.
Inertia compensation circuit supports constant diameter, constant field current
applications. The compensation signal is summed with the speed/voltage loop
PI
block output to form the reference to the CML .
When INTERNAL is selected, rate output from the speed/voltage loop S-curve block
is scaled based on the combined inertia of the motor and its connected load, as set
through the
NORMALIZED INERTIA (P.222).
A network kit must be installed to select the network input registers ( NETW IN REG 1,
2, or 3). Note that the network input registers are updated only when Control
Source (P.000) is set to
NETWORK and the network is active.
MAXIMUM CURRENT (P.007)
The highest amount
of current (positive or
negative) for a given
application.
This input is the basis
of armature current
scaling.
Parameter Range: 25 to 200 % FLA
Default Setting: 150 % FLA
Parameter Type: Configurable
OIM Menu Path(s): Current Minor Loop ( CML ) - CML Feedback Scaling
MAXIMUM CURRENT is limited to 200% of MOTOR RATED ARM AMPS .
The setting of MAXIMUM CURRENT can affect the value of J 18 ARM I FB RESISTOR
(P.395). Check J 18 ARM I FB RESISTOR (P.395) and the setting of the J18 jumper if
you change MAXIMUM CURRENT .