83
Protection retry count setting (F-08):
When a protection operation occurs, this function executes "auto protection reset" and "auto restart" the
number of times which is specified in the Protection retry count setting (F-08). It executes auto reset in one
second after the protection operation occurs, and then it executes auto restart.
When another protection operation occurs within ten seconds after restart, the inverter increases a value of
the retry counter by one. When the value is below a setting value of the Protection retry count setting (F-08),
VF66B (DC motor drive) resets the protection operation again to restart. When a protection operation does
not occur in ten seconds after auto restart, VF66B (DC motor drive) considers it as a successful retry and
clears the retry counter.
* The protection retry is available for protection operations of overvoltage, overspeed, power failure (when 86A is turned
on), external failure (protection relay 86A activated), and option error only. The retry against other protections is
prohibited for safety reasons.
External failure detection delay time setting
Console
panel
monitor
display
Contents
Setting range (selecting item)
Setting
resolution
Initialized
data
Unit
F-09
External failure(1) detection delay time 0.0 to 30.0
0.1
0.0
sec
F-10
External failure(2) detection delay time 0.0 to 30.0
0.1
0.0
sec
F-11
External failure(3) detection delay time 0.0 to 30.0
0.1
0.0
sec
F-12
External failure(4) detection delay time 0.0 to 30.0
0.1
0.0
sec
External failure 1 detection delay time (F-09) to external failure 4 detection delay time (F-12):
Time required to detect external failure signals can be delayed during the amount of time specified in the
External failure(1) through (4) detection delay time ((F-09) through (F-12)).
These are used to adjust detection sensitivity of external failure signals.
Traceback function settings
Console
panel
monitor
display
Contents
Setting range (selecting item)
Setting
resolution
Initialized
data
Unit
F-13
Traceback pitch
0 to 100
1
1
msec
F-14
Traceback trigger point
1 to 99
1
80
-
F-15
Traceback CH1 selection
0 to 12
1
0
-
F-16
Traceback CH2 selection
0 to 12
1
0
-
F-17
Traceback CH3 selection
0 to 12
1
0
-
F-18
Traceback CH4 selection
0 to 12
1
0
-
F-19
Traceback CH5 selection
0 to 12
1
0
-
F-20
Traceback CH6 selection
0 to 12
1
0
-
F-21
Traceback CH7 selection
0 to 12
1
0
-
F-22
Traceback CH8 selection
0 to 12
1
0
-
F-23
Traceback CH9 selection
0 to 12
1
0
-
F-24
Traceback CH10 selection
0 to 12
1
0
-
F-25
Traceback CH11 selection
0 to 12
1
0
-
F-26
Traceback CH12 selection
0 to 12
1
0
-
