Siemens SIMOVERT MASTERDRIVES Operating Instructions Manual page 53

03.99
Other relevant CBL
parameters
NOTE
NOTE
Siemens AG 6SE7087-6NX84-0GB0
SIMOVERT MASTERDRIVES
P722 (CB/TB TlgOFF)
Telegram failure time
With parameter P722 (see also operating instructions of the converter,
section "Parameter list"), it can be specified whether the entry of process data
into the dual-port RAM by the CBL is to be monitored by the converter or not.
The parameter value of this parameter corresponds to the telegram failure
time in ms. The pre-assigned value of this parameter is 10 ms, i.e. a
maximum of 10 ms allowed between two received process-data telegrams on
CC-Link, otherwise the converter switches off with fault F082. With the
parameter value 0, the monitoring function is de-activated.
The converter monitors the entry of process data into the dual-port RAM from
that time at which the CBL enters process data into the dual-port RAM for the
first time. Only from this time onwards error F082 can be triggered!
If the "ON" command (bit 0) has been softwired to the dual-port RAM,
the following measures must be taken for safety reasons:
An "OFF2" or "OFF3" command (see instruction manual of the
converter, section "Control word") must be additionally parameterized
to the terminal strip / PMU as, otherwise, the converter can no longer
be turned off by means of a defined command if the communications
system breaks down!
P781.i13 (fault delay)
With this parameter, P781.13, fault F082 can be delayed, i.e. the drive is not
turned off immediately when a fault occurs but only after expiry of the time
entered in the parameter.
This makes it possible to react flexibly to a bus failure. With the help of
binector B0035 "CB/TB telegram failure", the drive can be shut down (OFF1
or OFF3) by making the fault delay longer than the ramp-down time.
When the above settings have been made, the CBL is regarded as
registered in the converter and is ready for communication via the CC-
Link.
Changing parameters or specifying process data via the CC-Link
is not yet possible after this step.
Parameterization must first be enabled and the process data still have
to be softwired in the converter.
Operating Instructions
Start-up of the CBL
5-5