RAM DBS II
Refrigeration Solid State Starter
26
8.0 DBS Control Display Unit - KL4
8.1
Description
The DBS Control/Display Unit is mounted in the door of the controller’s enclosure. All aspects of motor
operation and control can be performed via this interface. The KL4 Control/Display unit is connected to
the DBS control board by cable to its RS-232 port.
DISPLAY
- The backlighted liquid crystal display screen has 2 lines of 20-characters. The display screen
shows the current menu selection, operating mode, associated values, and units of measurements.
MENUS -
Four menus enable the operator to view motor, operating, and historical data for the application,
as well as edit the operating parameters. The menus are MONITOR, SET POINT, SYSTEM SETUP, and
FAULT HISTORY.
NAVIGATION -
Four keypad buttons are used to move through the menus, to edit set point values, and to
acknowledge alarm and trip conditions.
ALARM -
An LED on the face of the KL4 Control/Display unit alerts the operator to an alarm or trip
condition. The LED will blink until the alarm or trip condition is acknowledged.
STATUS CODES -
A status code denoting the operating state of the DBS controller is displayed continually
in the lower left of the display screen. These codes are:
1.
run
= RUN
2.
rdy
= READY
3.
strt
= START
4.
trip
= TRIP
5.
cool
= COOL-DOWN
6.
edit
= EDIT MODE
8.2
Operation
• When power is applied, the display screen will read “RAM Industries.” After the DBS chassis performs
preliminary system diagnostics, “MONITOR MENU” will appear on the display screen.
• During normal operation the MONITOR menu should be selected. From this menu the operator can
acknowledge alarm or trip conditions, monitor the current operating status of the system, and view the
motor operating conditions.
• Press SELECT key to choose an alternate menu.
• Pressing the SELECT key while in any one of a menu’s parameters will cause the display screen to
revert to the title of that menu.
• To view the contents of a menu, press the UP/DOWN keys.
• Pressing the ENTER key while in the any of the main menus, or while viewing parameters in the
MONITOR or FAULT HISTORY menus will have no effect.
8.0 DBS Control Display Unit
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