The Siemens Motor Regulator (SIMOREG) is a state of the art, microprocessor based DC drive controller. This drive controller converts a three-phase, 50/60 Hz supply voltage into six pulse adjustable voltage to operate a DC motor. Output armature voltage varies directly with speed reference to provide constant torque operation from zero speed to base speed. Above base speed, the motor shunt field current may be decreased to further increase speed and provide a constant horsepower output up to maximum speed.
The SIMOREG drive controller is designed to provide precise motor speed control over a wide range of machine parameters and load conditions. This software based controller will serve well as a packaged drive or as part of a drive system.
Horsepower ranges include 1-250HP at 230VAC, 2-1750HP at 460VAC input and 1500HP and higher at 600/650V AC input. All HP ratings are available as regenerative or non-regenerative drive controllers. Listed below are standard features, a partial list of adjustments, display parameters, service conditions, diagnostics, and protection features. Consult the aotewell Section for additional information.
SIMOREG converters are fully-digital compact converters for connection to a three phase AC line to provide armature and field supplies for DC variable-speed motors with rated currents from 5 to 850 amps. Continuous currents up to 3600 amps, 6 pulse, and 7200 amps, 12 pulse, are possible through the use of high power SIMOREG tripler designs. The SIMOREG converters are available for both single and four quadrant applications.
SIMOREG converters are extremely compact. Ratings up to 510 amps are available in either Power Module designs, (no contactor or fuses), or as complete Base Drive designs. Above 510 amps only complete Base Drive designs are offered.
The modular design provides a high level of service friendliness as the individual components are easily accessible. The electronic box, that contains the basic electronics as well as supplementary boards can be easily swung out and removed to gain full access to the power circuits. The drive software is provided in a plug-in EPROM module which can be easily replaced if required.
External signals (binary input/output, analog input/output, pulse tachometer, etc.) are normally connected to terminals provided on the power interface board where two ribbon cables make the interconnection between this board and the main microprocessor board in the electronic box. As an option, shielded cables up to 2 meters long can be used in conjunction with external terminal modules to move the connections outside the converter in a cubicle.
SIMOREG converters can be easily parameterized using three optional methods. The first uses the three keys and five 7-segment displays located on the microprocessor board. The second method uses a supplementary operator panel that fits in the SIMOREG cover. This operator panel provides clear English text descriptions on a 2 line 16 character display along with keys that allow the parameters to be changed and the drive to be operated. The third method uses an RS232 serial port on the microprocessor board to interface with a conventional PC. Using start-up software included with the drive, the PC can be used for start-up, maintenance, and for trouble shooting. Among other things the PC software allows all parameters to be up or down loaded from PC files. For single quadrant converters, the armature is supplied using a fully controlled three phase bridge, and for four quadrant converters, using two fully controlled three phase bridges connected in a circulating current free back to back configuration. For converters rated 15 to 850 amps, the power section for both armature and field uses isolated thyristor modules which makes the heatsink electrically isolated from the power source and at ground potential.
All connecting terminals are accessible from the front with the power connections at the top and the control connections at the bottom. For ratings between 850 and 4500 amps, the power section consists of tripler modules each containing 3 thyristors. The structure includes the connections to configure the tripler modules as three phase bridges with up to three bridges in parallel.
This manual is intended to provide the user a quick and simple procedure to get a basic SIMOREG drive connected and running in a short time. Although the SIMOREG offers many features and a high level of configurability, many applications can be met using the built-in default settings. In order to get the SIMOREG up and running it is only necessary to make the required wiring connections and set a few application dependent parameters.
SIMOREG 6RA24 Siemens DC Drive Description and Standard Features
The SIMOREG drive controller includes the following standard features: (Refer to the Technical Information Section for additional details.)
Designed to meet the requirements of NEMA, IEEE, NEC, UL Listed and CSA Certified through 510A.
6 Pulse SCR (Silicon Controlled Rectifier) Bridge Microprocessor Control Board with 16 bit 38 Mhz high performance multi- tasking microprocessor
User interface keypad and digital display
Power and interface control board Individual pulse transformers per SCR
R/C snubbers across each SCR
Current transformers for current
Plug-in wiring harness between boards
Shunt field excitation circuitry with field current loss protection and field economizing circuit
Terminal blocks for incoming/outgoing
Fully rated contactor
High speed AC power fuses
460/230: 115V AC control power transformer
Power supply transformer
Digitally fired burst type SCR gate pulses
1400PRV rated thyristors are standard
Built-in AID converter accepts external reference sources
Digital and analog tachometer generator feedback
Serial communication via RS232 or RS485 serial ports
General purpose P-I-D loop for additional regulation modes
Freely programmable blocks for mathematical functions
Software programming package to aid in start up
Peer to Peer Link
Tachometer to Voltage Feedback switching
Four layer parameter
5 Binary and analog outputs
Priority access code protection
Jog and thread speed presets
Tapered current limit
IR compensation for voltage feedback drives
Motor armature current rating
Motor field current rating
Self turning routine automatically adjusts each SIMOREG drive controller to optimum performance upon command
Overspeed with tachometer feedback
CEMF crossover voltage (for field weakened speed ranges)
Tachometer loss and overspeed
Field current loss
12t motor overload
Line tolerance monitoring
Phase sequence monitoring
dv/dt Protection on the SCR’s
SCR type high speed AC line fuses
DC output fuse on regenerative units
Heat sink thermostat on fan cooled units
There are more than 120 diagnostic messages for troubleshooting, including fault and warning indication and memory retention of the last four faults. Some of the diagnostics include:
Line voltage out of tolerance
Line frequency unstable/out of tolerance
SCR failure detection and identification
Loss of speed or voltage feedback
8 Channel data storage
Standard Displays include
RMS AC phase to phase voltage
All parameter setpoints
Field current reference
Altitude: 3300 feet above sea level without derating (1000 meters)