Fuji Electric FRENIC-AQUA series, User Manual

Page: 616 / 751

6.3 Details of Function Codes
6-335
Chap. 6
FUNCTION C
ODES
„
Communications error processing (y02 for port 1 and y12 for port 2)
y02 or y12 specifies the error processing to be performed if an RS-485 communications error
occurs.
RS-485 communications errors include logical errors (e.g., address error, parity error,
framing error), transmission protocol error, and physical errors (e.g., no-response error
specified by y08 and y18). The inverter can recognize such an error only when it is
configured with a run or frequency command sourced through the RS-485 communications
link and it is running.
Data
for y02, y12
Function
0
Immediately trip, displaying an RS-485 communications error (Er8 for y02
and ErP for y12). (The inverter stops with alarm issue.)
1
Run during the period specified by the error processing timer (y03, y13),
display an RS-485 communications error (Er8 for y02 and ErP for y12), and
then stop operation. (The inverter stops with alarm issue.)
2
Retry communication during the period specified by the error processing timer
(y03, y13). If a communications link is recovered, continue operation.
Otherwise, display an RS-485 communications error (Er8 for y02 and ErP for
y12) and stop operation. (The inverter stops with alarm issue.)
3 Continue to run even when a communications error occurs.
For details, refer to the RS-485 Communication User's Manual.
„
Timer (y03 for port 1 and y13 for port 2)
y03 or y13 specifies an error processing timer.
If the specified timer count has elapsed due to no response from the other end when a query
has been issued, the inverter interprets it as an error occurrence. See the "No-response error
detection time (y08, y18)" given on the next page.
- Data setting range: 0.0 to 60.0 (s)
„
Baud rate (y04 for port 1 and y14 for port 2)
Data for
y04 and y14
Transmission speed (bps)
0 2400
1 4800
2 9600
3 19200
y04 or y14 specifies the transmission speed
for RS-485 communication.
For FRENIC Loader (via the RS-485
communications link), specify the
transmission speed that matches the
connected computer.
4 38400
„
Data length (y05 for port 1 and y15 for port 2)
Data for
y05 and y15
Data length
0 8 bits
1 7 bits
y05 or y15 specifies the character length for
RS-485 communication.
For FRENIC Loader (via the RS-485
communications link), no setting is required
since Loader automatically sets 8 bits. (The
same applies to the Modbus RTU protocol.)