121
Swit
ch
bet
ween t
he invert
er operat
ion and
elect
ronic by
pa
ss
operat
ion t
o
u
se
135
Electronic bypass
sequence selection
1
0
0
Without electronic bypass sequence
1
With electronic bypass sequence
136
MC switchover interlock
time
0.1s
1s
0 to 100s
Set the operation interlock time of MC2 and MC3.
137
Start waiting time
0.1s
0.5s
0 to 100s
Set the time slightly longer (0.3 to 0.5s or so) than the
time from when the ON signal enters MC3 until it
actually turns on.
138
Bypass selection at a fault
1
0
0
Inverter output is stopped (motor coast) at inverter
fault.
1
Operation is automatically switched to bypass
operation at inverter fault
(Not switched when an external thermal relay
operation (E.OHT) or CPU fault (E.CPU) occurs)
139
Automatic switchover
frequency from inverter to
bypass operation
0.01Hz
9999
0 to 60Hz
Set the frequency to switch inverter operation to
bypass operation.
9999
Without automatic switchover
159
Automatic switchover
frequency range from
bypass to inverter operation
0.01Hz
9999
0 to 10Hz
Valid during automatic switchover operation (
Pr. 139
≠
9999)
When the frequency command decreases below (
Pr.
139 - Pr. 159
) after operation is switched from inverter
operation to bypass operation, the inverter
automatically switches operation to inverter operation
and operates at the frequency of frequency
command.
When the inverter start command (STF/STR) is
turned OFF, operation is switched to inverter
operation also.
9999
Valid during automatic switchover operation (
Pr. 139
≠
9999)
When the inverter start command (STF/STR) is
turned OFF after operation is switched from inverter
operation to bypass operation, operation is switched
to inverter operation and the motor decelerates to
stop.
—
140
to
143
Refer to
Pr. 29
.
144
Refer to
Pr. 37
.
P
a
ram
e
te
r unit
language swit
chover
145
PU display language
selection
1
0
0
Japanese
1
English
2
Germany
3
French
4
Spanish
5
Italian
6
Swedish
7
Finnish
—
148,149
Refer to
Pr. 22
.
O
u
tput
curren
t det
ec
tion
(Y
12 signal)
Z
e
ro
cu
rrent
det
ect
ion
(Y
13 s
ignal)
150
Output current detection
level
0.1%
150%
0 to 220%
Set the output current detection level.
100% is the rated inverter current.
151
Output current detection
signal delay time
0.1s
0s
0 to 10s
Set the output current detection period.
Set the time from when the output current has risen
above the setting until the output current detection
signal (Y12) is output.
152
Zero current detection level
0.1%
5%
0 to 220%
Set the zero current detection level.
Suppose that the rated inverter current is 100%.
153
Zero current detection time
0.01s
0.5s
0 to 1s
Set this parameter to define the period from when the
output current drops below the
Pr. 152
value until the
zero current detection signal (Y13) is output.
166
Output current detection
signal retention time
0.1s
0.1s
0 to 10s
Set the retention time when the Y12 signal is on.
9999
The Y12 signal on status is retained.
The signal is turned OFF at the next start.
167
Output current detection
operation selection
1
0
0
Operation continues when the Y12 signal is on
1
The inverter trips when the Y12 signal is on. (E.CDO)
—
154
Refer to
Pr. 22
.
Func
tio
n
Parameter
Name
Incre
ments
Initial
Value
Range
Description
Re
la
te
d
p
ara
m
e
te
rs
