Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 21)

Drive Configuration 3-3
3.3.1 Setting NETW COMM LOSS SELECT (P.901)
(FlexPak 3000 Drives Only)
NETW COMM LOSS SELECT (P.901) is not used in WebPak 3000 drives. For
WebPak 3000 drives, a fault is generated when network communication is lost if
CONTROL SOURCE SELECT (P.000) is set to NETWORK . This causes the drive to coast/DB
stop. The drive cannot be restarted until the fault is cleared.
For FlexPak 3000 drives, NETW COMM LOSS SELECT (P.901) defines how the drive
responds 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 over the
network might not be possible.
You can set NETW COMM LOSS SELECT (P.901) to FAULT (0), USE LAST REF (1), USE
TRMBLK REF (2), or USE TRMBLK CNTL (3).
P.901 = FAULT (0)
When NETW COMM LOSS SELECT (P.901) is set to FAULT and network communication is
lost, the following occurs:
• The drive latches a fault condition and performs a coast/DB stop.
• A NETWORK COMMUNICATION LOSS fault is generated.
When network communication is re-established, you must reset the fault before the
drive can be re-started. See the drive software manual for information on resetting
faults.
!
ATTENTION: NETW COMM LOSS SELECT (P.901) allows you to configure
the drive to continue to run of a loss of network communication occurs.
You must provide some form of hardwired stop in case of communication
loss, since stopping the drive over the network might not be possible.
Failure to observe this precaution could result in bodily injury or damage
to, or destruction of, equipment.
!
ATTENTION: The drive is not equipped with a coast-stop pushbutton.
You must install a hardwired operator-accesible pushbutton that provides
a positive interrupt and shuts down the drive. Failure to observe this
precaution could result in bodily injury.
ATTENTION: If you are using the alternate register map ( NETW REGISTER
MAP SEL (P.914) set to ALTERNATE ) and you change the control source from
NETWORK , the parameters SPD LOOP PI INIT SEL , SPD LOOP PI INIT VAL , and
SPD LOOP PI RESET are reset to their default values (0 for each). Ensure
these values are appropriate for your application before changing the
control source. Failure to observe this precaution could result in severe
bodily injury or loss of life.