115
4. Parameter description
Parameter
Parameter
Factory setting
Setting range
Remarks
247
1s
0.1~100s
---
248
0.5 s
0.1~100 s
---
249
9999
0~60Hz, 9999 (Note 4)
---
250
9999
0~10Hz, 9999 (Note 4)
---
<Setting>
• Set the frequency to switch inverter operation to bypass operation. Inverter operation is performed
from a start until P.249 is reached, and when the output frequency is at or above P.249, inverter
operation is automatically switched to bypass operation. If set 9999 to P.249, without automatic
switchover.
• If the value of P.250 is not 9999, valid during automatic switchover operation (Pr.249
≠9999). When
the frequency command decreases below (Pr.249 - Pr.250) 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.
• If the value of P.250 is 9999, valid during automatic switchover operation (Pr.249
≠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.
The wiring diagram:
The following is the representative wriing diagram of switching the commercial power-supply
operation. P.80 = 37, P.81 = 38, P.40 = 10, P.85 = 9.
NFB
R
S
T
M
MC1
MC2
MC1
DC24V
STF
M1
M0
SD
SO
SE
K1
K3
K2
10
5
2
U
V
W
MC2
DC24V
A
B
C
Please pay attention to the capacity of the output terminals.The terminals which used are according to
different settings for P.40 and P.85 (output terminal function selection).When the output terminal
function select 10, connect the relay which drive the commercial power-supply operation.When the
output terminal function select 9, connect the relay which drive the inverter operation.When the
external input terminal function select 37, selected the switching inverter to commercial
power-supply operation.When the external input terminal function select 38, hand switching signal
CS.
