Figure 1.2 Hand-Held Communicator (HHC)
1.2.3 Overload Protection
The motor model offers the selection of overload classes 2 through 23.
The SAMMS-LV device offers more accurate motor protection than traditional thermal overload and most electronic motor protection devices. This prolongs motor life by eliminating nuisance tripping for multiple restarts, and allowing for proper cool down time when the motor winding temperature reaches a critically high value.
1.2.4 Programming Control Circuits
The SAMMS-LV device allows you to modify its configuration by programming the microprocessor. The SAMMS-LV device replaces conventional timers, overload relays, pushbuttons, and selector switches.
SAMMS-LVE is preloaded with seven across-the-line control circuits, and the desired control circuit can be selected using the Hand-Held Communicator (HHC.) Alternatively, a custom across-the-line circuit may be downloaded from a PC.
A library of more than 70 typical control circuits exists for use with SAMMS-LVX to meet applications ranging from simple
across-the-line starters to complicated reduced-voltage start- ers. With optional software, the specified control circuit can be loaded either from the library or from a modified version into the microprocessor’s memory, in the factory or on site, using an IBM®-PC compatible computer. If you would like to learn more about this software package, refer to SAMMS Custom Soft- ware Manual, Bulletin CP 3291.
Highly specialized control circuits can be developed and exist- ing circuits can be modified using an optional IBM-PC compat- ible software package. This software uses conventional engi- neering symbols along with pull-down menus and a mouse to draw ladder diagrams. When you have finished drawing the diagram, the software translates the diagram into microproces- sor machine code and downloads it into the SAMMS-LV device’s memory.
1.2.5 Using the Standardized Control Panel
The SAMMS-LV device can be used for local and/or remote control. The SAMMS-LVE device provides two light bars, while the SAMMS-LVX model provides three light bars. Each model includes six pushbuttons with lights and tactile feedback. These light bars and pushbuttons are programmed for the various functions of the control circuit used.
The test/reset button is used to test and reset the overload function and to test the front panel lights.
Diagnostics
Eight diagnostic LEDs, located on the front panel, provide information about conditions affecting the motor.
Statistical Data about the Motor
The microprocessor’s memory stores statistical data about the motor and displays this data on the Hand-Held Communicator (HHC).
Real-Time Metering Data
The Hand-Held Communicator displays real-time metering data.
Local Displaying of Motor and Circuit Data
The HHC and the eight (8) diagnostic LEDs display motor and control circuit data. The eight (8) diagnostic LEDs are located on the front panel of the device.
Communicating with Other Devices
The SAMMS-LV device communicates with other devices via the ACCESS system. When connected to the ACCESS system, the SAMMS-LV device provides two-way communication with the Power Monitor™ display and monitoring unit, an IBM PC- compatible computer running the Power Monitor PC™ com- munications and supervisory software or another supervisory device. This ability allows you to control and monitor motors from a centralized location. You can have remote access to all SAMMS-LV data such as diagnostics, statistical data, real-time metering, and controller status. If you would like to learn more about the ACCESS system, refer to Installing the ACCESS System (manual no. SG-6028).
