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Siemens SIMOREG 6RA70 DC Drives
  

DC-Master is known the world over for its outstanding quality, reliability, and most of all performance. With features such as feed forward control on all of the inner control loops and a 83ns instruction time made possible by its powerful co-processor system the SIMOREG 6RA70 DC-Master stands unchallenged on its performance from every end of the globe.
SIMOREG 6RA70 DC Drive Controller complete: (Digital Type)
Designed to meet the requirements of NEMA, IEEE, NEC, UL Listed and CSA
6 Pulse SCR (Silicon Controlled Rectifier) Bridge, 1 quad or 4 quad
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 (comb fire VA rating)
R/C snubbers across each SCR
Current transformers for current regulator feedback
Run/Ready light
• Plug-in wiring harness between boards
• Shunt field excitation circuitry with field current loss protection and field economizing (if required for motor heating, programmable) 
 
Terminal blocks for incoming/outgoing wiring connections
High speed AC Silicon SCR rated power fuses
115VAC phase non-critical control power transformer
Power supply transformer
Digitally fired burst type SCR gate pulses
1600PIV rated thyristors are standard
Built-in A/D converter accepts external reference sources
Digital and analog tachometer generator feedback or Voltage feedback speed loop selection
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
Adjustments
Priority access code protection
Minimum speed
Maximum speed
Linear acceleration
Linear deceleration
S-Curve rounding
Jog and thread speed presets
Current Limit
Tapered current limit
IR compensation for voltage feedback drive application
Motor armature current rating
Motor field current rating
Self turning routine automatically adjust each SIMOREG drive controller to optimum performance matching to motor malfunctions
Motor Over speed
CEMF crossover voltage (for field weakened speed ranges)
Protection
Overspeed
Field current loss
12t motor overload
Instantaneous overcurrent
Line tolerance monitoring
Phase sequence monitoring
Phase loss
dv/dt Protection on the SCRs
SCR type high speed AC line fuses
DC output fuse on regenerative units
Heat sink thermostat
Isolated electronics
Diagnostics
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
Phase loss
Motor stalled
SCR failure detection and identification
Loss of speed of voltage feedback
Current overload
EEPROM/Microprocessor
Quick Stop
8 Channel data storage
Standard LCD Display includes:
Speed reference
Operating speed
Current reference
Actual speed
Gating angle
CEMF
Armature voltage
CEMF/Speed
RMS AC phase to phase voltage
All parameter set points (1-941 as apply)
Torque direction
Operating time
Field current reference/field current actual
SIMOREG 6RA70 Siemens DC Master Variable Speed DC Drive