Shihlin electric SS2 Series, Руководство пользователя

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Parameter Description
Parameter Description
133
5.66 Commercial Power Supply Frequency Operation Function
(P.247~P.250) V/F
P.247 “MC switchover interlock time”
P.248 “Start waiting time”
P.249 “Automatic switchover frequency from inverter to commercial power
supply frequency”
P.250 “Automatic switchover frequency range from commercial power supply to
inverter”
Parameter Factory setting Setting range Remarks
247 1s 0.1~100s ---
248 0.5 s 0.1~100 s ---
249 9999 0~60Hz, 9999 ---
250 9999 0~10Hz, 9999 ---
<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 9999, there is no automatic switchover.
•When P.250≠9999, automatic switchover is valid during the operation (P.249≠9999). 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=9999, it is valid during automatic switchover operation (P.249≠9999). 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.