Hitachi SJ Series, User Manual

Page: 374 / 786

12-17-13
Chapter 12 Inverter Functions
12.17.6 Performing the Forced Operation
• How to switch to the forced operation mode with
the signal input.
• How to fix an operation mode until the power-off.
• How to enter the operation mode using a
commercial power supply when the inverter cannot
be restarted due to a failure.
• Performing this function enables the inverter to run
in the forced operation mode (Em-Force mode) in
which it operates at a constant speed without
shutting off the inverter output until the power-off.
• Set the [PA-01] forced operation to enabled 01 and
turn on the [EMF] emergency forced operation
terminal (input terminal: 105) to enter the forced
operation mode.
• The command for the forced operation mode is set
with the [PA-02] Em-Force mode frequency setting
and the rotation direction command in the [PA-03]
Em-Force mode.
Parameter Setting
Input Terminal Setting
Output Terminal Setting
• Once the forced operation mode is turned on, the
inverter keeps operating until the power is off.
• When using the forced operation mode, make sure
that the system is safe if the operation continues.
• Enabling the overcurrent retry, overvoltage retry,
undervoltage retry or instantaneous power failure
retry requires a separate setting.
• After the [EMF] emergency forced operation
terminal (input terminal: 105) is turned on, the input
terminal function except for the following are
disabled.
⇒
[COK]: Contactor check signal
Item Parameter Data Description
Em-Force mode
selection
[PA-01]
00 Disabled
01 Enabled
Em-Force mode
frequency setting
[PA-02] 0.00~590.00(Hz)
Set the frequency command in the forced operation
mode.
Rotation direction in
the Em-Force mode
[PA-03]
00 Forward rotation command
01 Reverse rotation command
Item Parameter Data Description
Selecting the input
terminal [CA-01]~
[CA-11]
105
[EMF] emergency forced operation terminal.
OFF: Disabled
ON: Forced operation mode (when [PA-01] = 01)
Item Parameter Data Description
Selecting the output
terminal [CC-01]~
[CC-07]
076
[EMFC] Signal in Em-Force.
OFF: Disabled
ON: In the forced operation mode
Q
A
!