Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 22)

3-4 AutoMax Network Communication Option Board
P.901 = USE LAST REF (1)
When NETW COMM LOSS SELECT (P.901) is set to USE LAST REF and network
communication is lost, the following occurs:
• The drive continues to run, using the last reference received from the network
master.
• A NETWORK COMMUNICATION TIMEOUT alarm (A00004) is generated.
• An entry is made into the drive’s alarm log for each active-to-inactive transition of
network communication status.
• If network communication is re-established and the drive is still running, the drive
will again follow the reference and sequencing control inputs supplied by the
network master.
You can stop the drive using the hardwired stop input or the OIM STOP / RESET key.
However, you cannot restart the drive until network communication is re-established or
CONTROL SOURCE SELECT (P.000) is changed.
P.901 = USE TRMBLK REF (2)
When NETW COMM LOSS SELECT (P.901) is set to USE TERMBLK REF (2) and network
communication is lost, the following occurs:
• The drive continues to run, using the auto reference value selected by AUTO
REFERENCE SELECT (P.103) (or Regulator board terminals 19 and 20?)
• A NETWORK COMMUNICATION TIMEOUT alarm (A000014) is generated.
• If network communication is re-established and the drive is still running, the drive
will again follow the reference and sequencing control inputs supplied by the
network master.
You can stop the drive using the hardwired stop input, the OIM STOP / RESET key, or the
hardwired stop input (coast/DB stop, Regulator board terminal 8). However, you
cannot restart the drive until network communication is re-established or
CONTROL
SOURCE SELECT (P.000) is changed.
P.901 = USE TRMBLK CNTL (3)
When NETW COMM LOSS SELECT (P.901) is set to USE TRMBLK CNTL (3), and network
communication is lost, the following occurs:
• The drive continues to run using the Regulator board terminal strip as the source for
all control (run, jog, stop, fault reset, direction, and OCL enable) and speed (auto)
reference signals.
• A NETWORK COMMUNICATION TIMEOUT alarm (A000014) is generated.
• The Speed Loop PI Reset and Underwind/Overwind bits cannot be changed while
operating in this mode. They will remain at the last values received from the
network.
If network communication is re-established and the drive is still running, the drive will
again frollow the reference and sequencing control inputs supplied by the network
master.