Installation manual

Overview
S1A53838 09/2011 47
Selecting Local or Remote mode
Switching between local and remote mode is achieved with the LOC/REM key on the drive’s embedded display
terminal or with F4 key on the graphic display option.
The LOC/REM key can be disabled by setting parameter [Loc/rem key] (F732) to 1 (see page 80
).
When parameter [Switch rem/Local]
(F295) is set to 1 (factory setting), a bumpless tranfer of motor operation
is achieved when switching from remote to local mode (see page 78).
For example, if the bumpless transfert feature is active and if the motor is running at full speed with the drive in
remote mode, the motor will still run at full speed after the drive is transferred to local mode.
Conversely, when switching from local to remote mode, the run and speed command is not transferred to the
remote mode. Upon entering the remote mode, the drive will operate on the run and speed command set by the
remote source even if it was received before entering or while in the local mode.
The diagram below is an example timing diagram.
Switching Between Local and Remote Mode
DANGER
UNINTENDED EQUIPMENT OPERATION
z Know the state of the frequency and run commands from the remote source before exiting the local mode.
z Upon entering the remote mode, the drive will respond to the most recent command from the remote source,
even if it was received before entering or while in the local mode.
Failure to follow these instructions will result in death or serious injury.
Remote mode
Local mode
ON
OFF
LOC
REM
Key
Output Frequency
Local Run Command
Remote Run Command
Run Status
ON
OFF
The remote run command and
frequency command are transferred
to the local mode when the
LOC/REM key is pressed.
In this example, the run command
and frequency command from
the remote mode are copied to
the local mode, and the motor
continues to run.
Local mode
Remote mode
ON
OFF
LOC
REM
Key
Output Frequency
Local Run Command
Remote Run Command
Run Status
ON
OFF
When switching from the local
mode to the remote mode, the run
command and frequency
command are determined by
the setting in the remote mode.
In this example, when the
LOC/REM button is pressed, the
motor in started.
This is due to the application of a
remote run command when
the drive exits the local mode and
enters the remote mode.
Set frequency
at remote mode