E6581580
4.2.
f851
: Communication Loss Action Setting (Network Disconnection)
This parameter sets up the VF-AS1/PS1 response to a loss of communications with the
EtherNet/IP™ network.
0: Stop and Communication release
The inverter decelerates the motor to a stop and gives a
t
alarm (the leftmost LED
t
flashes). Commands entered through the network are canceled, and the
commands set with parameters
cmod
and
fmod
become effective.
When communications are restored, the
t
alarm is turned off.
1: None
The inverter remains in the state where it was when the problem arose, and it gives a
t
alarm.
2: Deceleration stop
The inverter decelerates the motor to a stop and gives a
t
alarm. Commands
entered through the network are not canceled.
4: Emergency stop
The error message
err8
is displayed. Commands entered through the network
are not canceled.
When communications are restored, the inverter is not restored to working order and
the error message
err8
does not disappear until the inverter is reset.
5: Preset speed operation command
The drive will run at a preset speed as set up by
f852
in the case of a
communication loss (with
t
alarm). Commands entered through the network are not
canceled.
For example,
If the inverter is set as described below,
f851
= 5 (preset speed operation command)
f852
= 8 (preset speed operation frequency 8)
f287
(preset speed operation frequency 8) = 10 (10Hz)
Operation is carried out as follows.
Network
Operation of the VF-AS1/PS1
Normal conditions
Operates according to commands entered through the network.
Communications loss
Operates at 10Hz.
Restoration
Operates according to commands entered through the network.
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