Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 70)

5-22 FlexPak 3000 DC Drive Software Reference
SPEED FEEDBACK GAIN
Controls the gain of
the speed loop
feedback path.
This is typically a
value that is related
to the diameter of the
roll in a winder
application.
Parameter Range: 1000 to 32000
Default Setting: 1000
Parameter Type: Tunable
OIM Menu Path(s): This parameter is only available over the network. It
cannot be viewed through the
OIM .
Refer to the appropriate network communication manual for register map
assignments.
1000 corresponds to a gain of 1.000 and 32,000 to a gain of 32.000.
To access this register, CONTROL SOURCE SELECT must be set to NETWORK and NETW
REGISTER MAP SEL (P.914) must be set to ALTERNATE .
To bypass the multiplier block, set this register to 1000 (1.000). This is the also the
value
SPEED FEEDBACK GAIN is forced to when NETW REGISTER MAP SEL (P.914) is set
to ORIGINAL . The SPEED FEEDBACK GAIN block is bypassed when CONTROL SOURCE
SELECT is not set to NETWORK .
If CONTROL SOURCE SELECT is changed from NETWORK to any other control source,
the UNDERWIND ENABLE bit is set to the default of DISABLED . If the setting was
ENABLED , the motor can rotate in the opposite direction when the drive is restarted
with a control source other than the network.
!
ATTENTION: When CONTROL SOURCE SELECT is changed from NETWORK
to another value, UNDERWIND ENABLE is forced to DISABLED . This could
cause the motor to rotate in the opposite direction than it did under
network control. The active speed reference should be set to zero before
starting the drive from the new control source. Slowly increase the speed
reference until the proper rotation direction can be determined. If it is
incorrect, change the setting of the
FORWARD / REVERSE input. The active
speed reference is based on the new control source and the auto or
manual setting. Failure to observe this precaution could result in severe
bodily injury or loss of life.