Thermo King UT-1200, Manual

Page: 37 / 169

37
Operating Instructions for
Standard HMI Control Panel
SR-3 Truck HMI Controller
Description
SR-3 Truck HMI Controller
The SR-3 Standard Truck HMI (Human/Machine
Interface) Control Panel is supplied as standard
equipment on SR-3 Single Temperature Truck
applications. It is used to operate the unit and
display some unit information. The SR-3 Standard
Truck HMI Control Panel communicates with the
base controller via the CAN (Controller Area
Network) bus. It is connected to the base
controller via CAN Connector J14 on the base
controller. The SR-3 Standard Truck HMI Control
Panel is typically located in the vehicle driver's
compartment. It may be located in the truck
dashboard using a DIN mounting ring or under the
dashboard using an under dash mounting kit.
Figure 10: SR-3 Truck HMI Controller
• The SR-3 Standard Truck HMI Control Panel
consists of a display and nine touch-sensitive
keys.
• The display is capable of showing numbers
and lighting several icons. It does not display
text, thereby making it suitable for use with
any language.
• Amber indicator LED's are located next to
each of the four function keys below the
display. The LED will light when that function
is active.
• A red indicator LED is located between the
ON Key and OFF Key. This indicator will
glow if Alarm Code 91 Check Electric Ready
Input occurs. It will also glow if a 15 pin
Thermo King data cable is connected to the
serial port on the back of the controller (DPD).
Controller Features
• Displays Box Temperature and Setpoint in
Fahrenheit or Celsius
• Displays Engine Running and Motor Running
Hourmeters
• Changes Setpoint
• Selects and Indicates CYCLE-SENTRY or
Continuous Mode Operation
• Selects and Indicates High Speed Lock-Out
Operation
• Initiates and Indicates a Defrost Cycle
• Indicates an Alarm Condition Exists, Displays
and Clears Alarms
• Initiates and Indicates a Pretrip Test
• Sends a Start of Trip to the ServiceWatch data
logger.
• Changes Display Brightness
• Shows HMI Control Panel Serial Number and
Software Revision.
Display
The display presents information to the operator.
This information includes setpoint and box
temperature, hourmeter readings, alarms and
several icons as shown below. All display
segments and icons are shown in Figure 11.
Figure 11: Display
The upper row of numbers can display the Box
Temperature, Engine Run Time Hourmeter or
Alarm Code(s).
The lower row of numbers can display the
Setpoint, Electric Run Time Hourmeter or Total
Number of Alarms.