Hitachi SJ700-2 Unattended start protection USP function, Remote control function UP and DWN

Related code

C101: Up/Down memory mode selection

C001 to C008: Terminal [1] to [8] functions

(Example 3) Power supply

FW

USP

RS Alarm

Output frequency

Description

USP: Unattended start protection

Related code

C001 to C008: Terminal [1] to [8] functions

Chapter 4 Explanation of Functions

4.2.50 Unattended start protection (USP) function

The unattended start protection function allows you to make the inverter trip with error code "E13" displayed if the inverter power is turned on when an operation command has been turned on.

You can recover the inverter from tripping by performing the reset operation or turning the operation command off. (See example 1.)

If the inverter is recovered from tripping with the operation command left turned on, the inverter will start operation immediately after recovery. (See example 2.)

The inverter can operate normally when an operation command is turned on after the inverter power is turned on. (See example 3.)

To use this function, assign function "13" (USP) to one of the terminal [1] to [8] functions (C001 to C008). The following charts show examples of the timing of the unattended start protection operation:

(Example 1)

Power supply

FW

USP

RS

Alarm

Output frequency

(Example 2)

Power supply

FW

USP

RS

Alarm

Output frequency

Item

Terminal [1] to [8] functions

Function code C001 to C008

Data

13

4.2.51 Remote control function (UP and DWN)

The remote control function allows you to change the inverter output frequency by operating the UP and DWN terminals (intelligent input terminals).

To use this function, assign functions "27" (UP) and "28" (DWN) to two of the terminal [1] to [8] functions (C001 to C008).

-This function is only effective for multispeed operation when "01 (terminal)" or "02 (oprater)" has been specified for the frequency source setting (A001). If "01" (control circuit terminal block) has been specified, this function is only effective when the analog command holding function (AHD) is enabled. (see 4.2.56) This function is ineffective when the external analog input has been specified for the frequency source setting (A001). This function cannot be used to set frequencies for jogging operation.

When the UP or DWN terminal is on, the 1st, 2nd, and 3rd acceleration/deceleration time follows the settings of "F002", "F003/F202", "F203/F302", and "F303". To switch between the 1st, 2nd, and 3rd controls, assign function "08" (SET) and "17" (SET3) to intelligent input terminals, and turn on and off the SET and SET3 terminals for switching.

You can store the frequency settings adjusted using the remote control function (UP and DWN signals). Set 01 (enable) on C101 to store the frequency settings.

You can also clear the stored frequency settings. Assign function "29" (UDC) to an intelligent input terminal, and turn on or off the UDC terminal to clear or store, respectively, the frequency settings adjusted with the UP and DWN signals. In this case 0Hz is set as initial value.

Item	Function code	Data	Description
Terminal function	C001 to C008	27	UP: Remote control UP function
		28	DWN: Remote control DOWN function
		29	DWN: Remote control data clearing
Up/Down memory mode	C101	00	Disabling the storage of frequency settings
selection		01	Enabling the storage of frequency settings (*1)

*1 Do not operate the UP or DWN terminal after the inverter power is shut off. Otherwise, the frequency settings may not be stored correctly.

Operation command (FW or RV)

UP

DWN

Output frequency

Turning on the UP and DWN terminals at the same time disables acceleration and deceleration.

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