GU641A Controller Operation Manual
8
3. Panel Operation
The operation panel consists of 3 sections: LCD display indicating measurement parameters, LED
indicator for common failure, and push buttons for Genset and selection of control modes.
LCD can display 3-row data in the same time. LCD also has a backlight so that the operator can clearly
read information day or night. After pressing any button the backlight will automatically turn off after a
preset time.
The LCD display and its control push buttons provide a friendly operational interface for the operator to
easily control the Genset, read information and parameter setting.
3.1 Control buttons and LED
Function Description
Tag
Scroll Button
Scroll menu for parameters display / enter into or exit parameters setting by
pressing and holding this button for 2sec.
MUTE / Lamp Test Button
When failure occurs, alarm buzzer sounds. Pressing mute button will mute the
sound. LCD displays mute icon. Press it again will clean mute function, buzzer
continues to sound. Press and hold this button for 2sec, all LEDs illuminate
simultaneously.
AUTO Mode Button / LED /
“
+
”
Value Increase
The push button is used for selecting
“
auto mode
”
. When the controller is running
in AUTO mode, the LED above the button is illuminated. The activation and
deactivation of the
“
remote start signal input
”
and
“
Mains Failure
”
controls the
starting and stopping of the Genset.
When in parameters setting mode, this button is used to increase value / scroll
down menu.
MAN Mode Button / LED /
“
-
”
Value Decrease
The push button is used for selecting
“
manual mode
”
. When the controller is
running in MANUAL mode, the LED above the push button is illuminated. The Start
and Stop push buttons control the starting of the Genset.
When in parameters setting mode, this button is used to decrease value / scroll up
menu.
TEST Mode Button / LED /
“
√
”
Confirm Parameters Configure
The push button is used for selecting
“
test mode
”
. When controller is running in
TEST mode, the LED above the push button is illuminated, the controller starts the
generator simulating Mains failure and the activation of
“
remote start signal
”
.
When in parameters setting mode, this button is used to enter into submenu /
confirm modification.
START Button / LED / Return
The push button is used for manually start the Genset. When controller is running
in MANUAL mode, press this button to start the generator.
When in parameters setting mode, this button is used to return.
