Rockwell Automation Flex/WebPak 3000 DC Drive ControlNet, Network Communication Board, 915FK2101 - Manual (Page 19)

Drive Configuration 3-3
For FlexPak 3000 drives, NETW COMM LOSS SELECT (P.901) defines how the drive will
respond to network communication loss when CONTROL SOURCE SELECT (P.000) is set
to NETWORK . Alarms do not cause the drive to stop. Therefore, some form of hardwired
stop must be available in case of communication loss, since stopping the drive
through the network might not be possible.
When NETW COMM LOSS SELECT = FAULT (1), a fault is generated when network
communication is lost, causing the drive to coast/DB stop. The drive can not be
restarted until the fault is cleared.
When NETW COMM LOSS SELECT = HOLD LAST REF (2), the drive continues to run if
network communication is lost, using the last reference value received over the
network. Alarm A00004 (
NETWORK COMMUNICATION TIMEOUT ) is generated if network
communication is lost. The drive will maintain the last reference until network
communication is reestablished and a new drive reference value is provided.
When NETW COMM LOSS SELECT = USE TRMBLK REF (3), the drive continues to run if
network communication is lost, using the selected auto reference value from the
regulator board terminal strip (terminals 19 and 20). The drive automatically switches
back to the network reference when network communication is re-established. Alarm
A00004 (
NETWORK COMMUNICATION TIMEOUT ) is generated if network communication is
lost. The drive can still be stopped through the terminal block and local keypad, but
can not be restarted.
When NETW COMM LOSS SELECT = USE TRMBLK CNTL (4), the drive continues to run if
network communication is lost. The Regulator board terminal strip will become the
source for all control (run, jog, stop, fault reset, direction and OCL enable) and speed
(auto) reference signals. The Speed Loop PI Reset and Underwind/Overwind bits can
not be changed while operating in this mode. They will remain at the last values
received from the network. The drive automatically switches back to the network
reference and control when network communication is re-established. Alarm A00004
(
NETWORK COMMUNICATION TIMEOUT ) I s generated if network communication is lost.
Range: FAULT (1), HOLD LAST REF (2), USE TRMBLK REF (3), USE TRMBLK CNTL (4)
Type: Non-volatile, Tunable
Default: FAULT (1)
3.5 Setting NETW OUT REG 1 SELECT (P.902)
NETW OUT REG 1 SELECT (P.902) defines a parameter number whose value will be
monitored and saved in the network option board’s dual-port memory. For example,
setting this parameter equal to 588 will cause the value of
FIELD DELTA (P.588) to be
written to file address N10:47 in the dual-port memory for FlexPak 3000 drives,
address N10:87 for WebPak 3000 drives.
Range: -32768 to 32767
Type: Non-volatile, Tunable
Default: 0