Advanced Motor Management
Available on Dialog Plus

Overload Protection
Increased accuracy is accomplished electronically with an I2t algorithm. Thermal memory accurately models motor operating temperature. Ambient insensitivity is inherent in the electronic design.

Overload
Selectable trip classes - 10, 15, 20, and 30 - meet the requirements of a wide range of applications. A programmable trip setting eliminates the need for heater elements and simplifies start-up while reducing your inventory investment.

Protecting Your Investment
As little as 4% supply voltage unbalance can cause a 20% current unbalance. This can result in a 25% increase in motor temperature, which may lead to premature motor failure.

Rockwell Automation understands the shortcomings of traditional voltage unbalance protection, which can de-energize motor operation. The Allen-Bradley SMC Dialog Plus controllers incorporate a Dynamic Phase Rebalance feature that compensates for voltage unbalance by automatically adjusting the voltage output to balance the three-phase currents drawn by the motor.

Advanced Diagnostics
Fault diagnostic capabilities built into the SMC Dialog Plus controllers help you pinpoint a problem for easy troubleshooting and quick re-starting.

• Line Fault
• Power Loss
• Voltage Unbalance
• Phase Reversal
• Undervoltage
• Overvoltage
• Overtemperature
• Open Gate
• Overload
• Excessive Starts per Hour
• Jam - a motor jam is generally an indication of a mechanical problem. Quick detection can prevent equipment damage and unnecessary downtime.
• Stall- when a motor stalls during the starting process, it can take more than 20 seconds before the overload trips. Quick detection can reduce motor heating and allow for a quick restart once the problem is corrected.
• Underload- the operating current of a motor can provide detailed information about equipment performance. For instance, a sudden drop in more current can signal condition such as pump cavitation, tool breakage or belt breakage.

Network Communication
Integrating intelligent motor management into your automation architecture is enhanced with the SMC Dialog Plus controller. Communication capabilities may increase reliability by reducing the total number of components and terminations per system. The SMC Dialog Plus controller delivers enhanced control through the ability to access parameter settings and provides faults diagnostics, metering and remote start-stop control.

The SMC Dialog Plus controller is simple to program with organized, descriptive, application-specific parameters. It can be configured using the Allen-Bradley Windows-based DriveToolsTM programming software - compatible with several Allen-Bradley AC and DC digital drive products. The built-in LCD display provides parameter identification using clear, informative text so you can program your controller without referring to a manual.

Metering
Power monitoring parameters include:

• Three-phase current
• Three-phase voltage
• Power in kW
• Power usage in kWH
• Power factor
• Motor thermal capacity usage
• Elapsed time

Note: The motor thermal capacity usage allows the user to monitor the amount of overload thermal capacity usage before the SMC Dialog Plus controller’s built-in electronic overload trips.

Note: In bypass configurations, the current sensing and power factor measurement capability of the SMC Dialog Plus controller is disabled. Three-phase current measurement, kW, kWH, and motor thermal capacity usage can still be maintained with the use of the Bulletin 825 Converter Module.
Note: The usage of an SMC Controller on a generator and line power requires the use of a Bulletin 825 Converter Module.

Built-in SCANport Communication
A serial interface port is provided as standard, which allows connection to a Bulletin 1201 Human Interface Module or a variety of Bulletin 1203 Communication Modules. This includes Allen-Bradley Remote I/O, DeviceNet network and RS 232/422/485-DF1.

LCD Display
The SMC Dialog Plus controller’s two-line 16-character backlit LCD display provides parameter identification using clear, informative text. Controller set up can be performed quickly and easily without the use of a reference manual. Parameters are arranged in an organized four-level menu structure for ease of programming and fast access to parameters.

Keypad Programming
Programming of parameters is accomplished through a five-button keypad on the front of the SMC Dialog Plus controller. The five buttons include up and down arrows, an Enter button, a Select button, and an Escape button. The user needs only to enter the correct sequence of keystrokes for programming the SMC Dialog Plus controller.

Auxiliary Contacts
Three hard contacts are furnished as standard with the SMC Dialog Plus controller. The first two contacts are programmable for Normal/Up-to-speed. The third is programmable for Normal/Fault.

Cat. Nos. listed in blue type are available on the Easy Ship Program. Orders for multiple quantities may increase lead-time. Consult your Allen-Bradley distributor for details.