4-49
C001-C005: Intelligent input terminal
Relation code
Unattended start protection (USP)
The USP function is designed as a fail safe to prevent
accidental starting of the Inverter if the RUN signal is ON when
the power is restored to the Inverter. When this function worked E13 is displayed. Either resetting the Inverter
or turning the RUN signal OFF can clear the trip
This function is able to disarm when the operation command is turned off. (Example 1)
If the trip is cancelled while the RUN signal is still ON then the inverter will restart automatically.(Example 2)
When the operation command is turned on after the power supply input, the inverter drives normal. (Example 3)
Assign 13(USP) to an intelligent input terminal. Unattended start protection is shown as follows;
UP/DOWN selection(UP/DWN)
The Inverter output frequency can be changed with the UP and DWN
intelligent input terminals.
Assign 27(UP) and 28(DWN) to two of the intelligent input terminals 1-5.
This function is valid only when the frequency command selection A001 is set to 01 or 02. However, when 01
(control terminal) is set, this can only be used for multi-speed operation.
This function will not operate when the external analog frequency command or the jogging operation is used.
Acceleration time operates according to F002, F003/F202, F203 when UP/DWN terminal is ON.
To change 1
st
/2
nd
control, assign 08(SET) to an intelligent input terminal, change with SET terminal.
It is possible for the Inverter to retain the frequency setting value from the UP/DWN terminals. Parameter C101
switches the memory On or OFF. It is also possible to clear the memory and return to the original set frequency.
Assign 29(UDC) to an intelligent input terminal and switch it on to clear the memory.
Function
code
Data
Description
00
This will not memorize the frequency command adjusted with UP/DWN.
When power is turned ON again, set value is returned to the value before it
was adjusted with UP/DWN.
C101
01
This memorizes the frequency command adjusted with UP/DWN.
When power is turned ON again, set value is kept the value after it was
adjusted with UP/DWN.
Chapter 4 Explanation of function
C101 :UP/DOWN
memory
selection
C001-C005: Intelligent input terminal
Relation code
Power supply
FW
USP
RS
Alarm
Output
(Example 1)
Power supply
FW
USP
RS
Alarm
(Example 3)
Output
Output frequency
Operation command
(FW, RV)
UP
DWN
Inverter doesn’t accelerate and
decelerate, if UP, DWN terminal
is turned ON simultaneously.
Output
Power supply
FW
USP
RS
Alarm
(Example 2)
