Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 24)

4-2 AutoMax Network Communication Option Board
Data can be input or output data.
Input data is one of three types:
• Control/Reference: Data that require the fastest update rates, including data such
as the sequencing inputs (Stop, Run, Jog, Fwd/Rev) and speed/torque reference.
These inputs are transferred every speed loop scan period. An exception to this
occurs if the drive is configured to get its torque reference from the network. If the
torque reference is from the network, the drive reads the
CML reference from the
Network Option board every current minor loop scan.
• Tunable: Data that can be changed while the drive is running, such as ACCELERATION
TIME (P.001). Tunable inputs are transferred approximately every 600 msec while the
drive is running or stopped.
• Configurable: Data that cannot be changed while the drive is running, such as
CONTROL SOURCE SELECT (P.000). Configurable inputs are transferred from the
Network Option board to the Regulator board approximately every 600 msec when
the drive is stopped. Values sent from the network master while the drive is running
are stored in Network Option board memory but are not scanned into Regulator
board memory until the drive is stopped.
Output data is one of two types:
• Runtime Signal: Data such as the selected speed reference value, drive status
(such as ready or running), drive fault flags, the state of terminal strip digital inputs,
and motor status values (
RPM , VOLTS , AMPS ). This information is transferred every
speed loop scan period.
• Tunable, Configurable, and Status: All other information provided by the drive.
This typically includes all stored drive parameter values. Tunable, configurable, and
status data are transferred approximately every 600 msec.
Output data is transferred from the Regulator board to the Network Option board
regardless of the status of AutoMax network communication (active or inactive) or the
selected drive control source (
KEYPAD , TERMBLK , or NETWORK ).
For FlexPak 3000 drives, the speed loop scan period is 10 msec when FEEDBACK
SELECT (P.200) is set to ARMATURE VOLT . It is 5 msec when FEEDBACK SELECT (P.200) is
set to any other value.
For WebPak 3000 drives, the speed loop scan period is 10 msec.