Filter
Top Products
149
Communication parameters
2
FUNCTIONS
7) Signal loss detection (Communication parameter n6 "communication check
time interval")
· If a signal loss (communication stop) is detected between the inverter and
computer as a result of a signal loss detection check, a communication error
(OPT) occurs and the inverter output is shut off.
· A signal loss detection is made when the setting is any of "0.1s" to "999s". To
make a signal loss detection, it is necessary to send data (control code refer to
page 147) from the computer within the communication check time interval. (The
send data has nothing to do with the station number)
· Communication check is performed in computer link operation mode from at the
first communication.
· When the setting is "---", communication check (disconnection detection) is not
made.
· When the setting is "0", RS-485 communication is disabled.
CAUTION
When the setting is "----" = n6, communication check (signal loss detection) is not
made. When signal is lost (communication is disconnected), motor can not be
stopped from communication.
Computer
Operation Mode
Example: When communication parameter n6= "0.1 to 999"
External
Computer link
Check start
Alarm(OPT)
Tim
e
Inverter
Inverter
Computer
n6
ENQ
Communication
check counter