Fuji Electric LONWORKS OPC-LNW, Инструкция по эксплуатации

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Chapter 8 Inverter Reaction to LONWORKS Communications Errors
8.1 Specifying an Inverter Reaction to LONWORKS Communications Errors
If, with the receive heartbeat SCPT_maxRcvTime specified, the target input NV receives no data within the
specified heartbeat time, this card interprets it as a LONWORKS communications error (timeout), causing the
inverter to trip with
er5 depending upon the configuration.
The inverter reaction to follow an occurrence of LONWORKS communications errors can be specified with the
configuration properties (CPs) or their equivalent inverter's function codes given below.
Configuration properties (CPs) Equivalent inverter's function code
UCPT_CblLossMode o27
UCPT_CblLossTimer o28
For details about input network variables (NVs) to be monitored if a LONWORKS communications error
occurs, refer to Table 7-11 in Chapter 7, Section 7.7 "(1) SCPT_maxRcvTime."
Such an input NV that has not received data once could not be a timeout monitor target, so no
LONWORKS communications error can be detected even if the receive heartbeat SCPT_maxRcvTime
is specified and the input NV receives no data within the specified heartbeat time.
(1) UCPT_CblLossMode
As listed in Table 8-1, this CP specifies the inverter reaction mode to select when a communications error is
detected. Inverter's function code o27 is functionally equivalent to this CP. Modifying the CP automatically
modifies function code o27 data, and vice versa.
Table 8-1 Specifying Inverter Reaction Mode with UCPT_CblLossMode
SCPT_maxRcvTime
UCPT_CblLossMode
(o27)
UCPT_CblLossTimer
(o28)
Inverter Reaction to Communications Errors
0s - -
Skip out on time-out.
No error indication on LEDs.
NV continues the current state
.
0, 4 to 9 - After time-out, immediately the motor coasts to a stop and
issuing " er5 ".
1 Delay time
After time-out, the motor coasts to a stop and issuing
"
er5
" after the time longer than the specified timer (o28)
period.
2 Delay time
After time-out, when the data does not input during the
time specified timer (o28) period, the motor coasts to a
stop and issuing "
er5 ".
If the data input, the communication error is disvalued.
3, 13 to 15 -
The communication error is disvalued and continues the
current behavior. (no “
er5
” is issued.)
NV continues the current state.
Minor indication on LEDs (flashing red on POWER LEDs).
10
-
After time-out, immediately decelerates it to a stop, and
after stopped, issuing " er5 ".
11 Delay time
After time-out, decelerates it to a stop after the time longer
than the specified timer (o28) period, and after stopped,
issuing "
er5
".
Other than 0s
(Set time-out
time)
12 Delay time
After time-out, when the data does not input during the
time specified timer (o28) period, decelerates it to a stop,
and after stopped, issuing "
er5
".
If the data input, the communication error is disvalued.
Even if a LONWORKS communications error has occurred, the inverter may not display er5 with the
configuration including UCPT_CblLossMode = 3. However, the POWER LED on the interface card
blinks in red, showing an occurrence of LONWORKS communications errors.
If the network binds only NVs of this card (turnaround connection), the communications link can be
established even with the LONWORKS network cable disconnected, so no communications error
occurs.
(2) UCPT_CblLossTimer
This CP specifies the timer to work when a communications error is detected. The timer count object varies with
the UCPT_CblLossMode setting as listed in Table 8-1 above. Inverter's function code o28 is functionally
equivalent to this CP. Modifying the CP automatically modifies function code o27 data, and vice versa.