7
1
1
Parameter Description
Parameter Description
Parameter
Factory setting
Setting range
Remarks
247
1s
0.1~100s
---
248
0.5 s
0.1~100 s
---
249
99999
0~60Hz, 99999
---
250
99999
0~10Hz, 99999
---
<Setting>
•
P.249 is used to switch the frequency from inverter operation to commercial power supply operation.
Between starting and P.249 inverter operation, an output frequency greater than P.249 will
automatically change the inverter operation to commercial power supply operation. When P.249 is
set to 99999, there is no automatic switchover.
•When
P.250 99999, automatic switchover is valid during the operation (P.249 99999). After the
inverter operation is switched bypass operation, if the frequency command is lower than
(P.249–P.250), the operation will be switched to inverter operation and run by the frequency of the
frequency command. Inverter activation when the inverter start command (STF/STR) is turned off,
the operation is also switched to the inverter operation.
•When
P.250=99999, it is valid during automatic switchover operation (P.249 99999). When the
inverter start command (STF/STR) is turned off after the operation is changed from inverter
operation to commercial power supply operation, the operation will be changed to the inverter
operation and the motor will decelerate until it stops.
Examples for the commercial power supply frequency switchover function:
The following diagram is the representative wiring diagram for altering the commercial
power-supply operation.
P.80
= 37,
P.81
= 38,
P.40
= 10,
P.85
= 9.
Please pay attention to the capacity of the output terminals. The terminals are used according to the
different settings for P.40 and P.85 (output terminal function selection).When the output terminal
function selects 10, connect the relay driving the commercial power-supply operation. When the
output terminal function selects 9, connect the relay driving the inverter operation. When the external
input terminal function selects 37, switch the inverter to commercial power-supply operation. When
the external input terminal function selects 38, manually switch the signal CS.
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