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VISCOTHERM Home Page >> Products

Product Overview
Rotodiffs
Pump Units
Electronics, incl. CVC600
CVC600 Downloads

 

Product Overview

General Overview
Drive systems
For more than 30 years, VISCOTHERM AG has taken separation technology forward through continuous innovation with its ROTODIFF® decanter centrifuge drives. This development is typified by exceptional flexibility of the equipment, adaptation to widely varying operational conditions.

Fundamentals
The typical feature of all VISCOTHERM drive systems is their exceptional adaptability to widely varying operational conditions. The fundamental criteria are variable scroll speed and bowl rotation speed (option). These two parameters are among the most important in the decanter centrifuge technology.

Bowl speed variations of the decanter have decisive bearing on:

  • the separation speed (g-force)
  • the separation efficiency

Differential speed changes of the scroll have decisive bearing on:

  • the direct impact on solids delivery and hence solids throughput
  • solids residence time
  • solids filling level in the bowl

These parameters directly influence the volume of solids which can be separated, the dry content of the solids and hence also the total performance of a decanter centrifuge.

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Rotodiffs

 Max. continuous Pressure
   Torque at 250 bar
ROTODIFF
      Displacement
Roller Piston
        Max. bowl speed
Hydromotors
          Max. diff. speed
           Weight
Units::
 bar  Nm  lit/rev  rpm  rpm   kg (lbs)
 1060 S017-L 250 708 0.171 6500 193 27 (60)  
 1060 S-L 250 851 0.214 6500 154 27 (60)  
 1060 D-L 250 1703 0.482 6500 77 30 (67)  
 1071 S06-GV 250 2500 0.627 4500 125 70 (155)  
 1071 S-GVE 250 3717 0.932 4500 134 70 (155)  
 1071 S-GVL 250 3717 0.934 4500 192 70 (155)  
 1071 D15 250 6207 1.560 4500 21 80 (178)  
 1071 D 250 7434 1.868 4500 18 80 (178)  
 1071 D-GV 250 7434 1.868 4500 42 80 (178)  
 1071 D-GVE 250 7434 1.868 4500 67 80 (178)  
 1071 D-GVL 250 7434 1.868 4500 96 80 (178)  
 1080 D 250 14000 3.500 3500 23 170 (378)  
 1080 D-GVE 250 14000 3.500 3500 36 170 (378)  
 1080 D-GVL 250 14000 3.500 3500 51 170 (378)  
 1080 T 250 21000 5.250 3500 15 215 (478)  
 1080 T GVE 250 21000 5.250 3500 24 215 (478)  
 1080 T GVL 250 21000 5.250 3500 34 215 (478)  
 1120 D66 250 26570 6.680 3000 30 350 (778)  
 1120 D 250 21000 8.300 3000 24 215 (478)  
 1120 D-GVL 250 26570 8.300 3000 58 350 (778)  
 1120 T 250 49500 12.450 3000 16 440 (978)  
 1120 T-GVL 250 49500 12.450 3000 38 440 (978)  
 1120 Q/VA 250 66040 16.600 3000 12 500 (1111)  
 1120 Q-GVL/VA 250 66040 16.600 3000 29 500 (1111)  

 

 Max. continuous Pressure
   Torque at 250 bar
ROTODIFF
      Displacement
Step Piston
        Max. bowl speed
Hydromotors
          Max. diff. speed
           Weight
Units::
 bar  Nm  lit/rev  rpm  rpm   kg (lbs)
 2060 S-L 250 1990 0.500 6500 66 31 (69)  
 2060 D-L 250 3980 1.000 6500 33 36 (80)  
 2071 S-L 250 5400 1.357 4500 42 72 (160)  
 2071 S-GVE 250 5400 1.357 4500 92 72 (160)  
 2071 S-GVL 250 5400 1.357 4500 133 72 (160)  
 2071 D-L 250 10800 2.714 4500 21 82 (182)  
 2071 D-GVE 250 10800 2.714 4500 46 82 (182)  
 2071 D-GVL 250 10800 2.714 4500 66 82 (182)  
 2080 D-GVE 250 21187 5.325 3500 23 170 (378)  
 2080 D-GVL 250 21187 5.325 3500 34 170 (378)  
 2120 S-GVL 250 24166 5.975 3000 80 280 (622)  
 2120 D-GVL 250 47555 11.950 3000 40 360 (800)  
 2150 S-L 250 100000 25.130 3000 20 n/a  


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Pump Units

VISCOTHERM designs and builds pump units to match the required Rotodiff®. The pump units are driven by an electric motor, which in turn drives the hydraulic pump.

VISCOTHERM
Pump Units
  kW Gear
Pump		 Piston
Pump		  Pump
ccm/rev		  Oil
Tank
(lit)
 C 3 - 6 Z / HP  3    4.1  35
 C 5.5 - 10 Z / HP  5.5    7.0  35
 C 7.5 - 16 Z / HP  7.5    11.3  35
 C 11 - 6 Z / HP  11    15.8  85
 C 15 - 33 Z / HP  15    22.5  85
 C 18.5 - 40 Z / HP  18.5    26.4  85
 C 18.5 - 40 K  18.5    28  100
 C 22 - 65 K  22    45  100
 C 30 - 65 K  30    45  160
 C 37 - 100 K  37    71  160
 C 45 - 100 K  45    71  160
 C 55 - 140 K  55    100  250
 C 75 - 140 K  75    100  250
 C 75 - 180 K  75    125  220


This is a partial list only; it represents a small selection of some of the Pump Units we make. There are other sizes and variations available. For a complete list, or for a specific inquiry please contact VISCOTHERM. These Pump Units are all analog control. All of the above units are available as digital control (designated by a 'B' instead of a 'C') and as electronically controlled (designated by a 'B/C' instead of a 'C').

In addition we design and manufacture Full Hydraulic Pump Units, where the VISCOTHERM Pump Unit drives both the bowl and the scroll!

 

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Electronics & CVC600

VISCOTHERM designs and builds electronic control units to operate and automate its pump units and Rotodiffs, and thereby simplifying the complete process of separation.

The display unit CDC is used with standard pump units starting with the letter B or C, e.g. C7.5-16Z/HP.
The control unit CVC600 is used with electronically controlled pump units, starting with B/C, e.g. B/C55-140K.

 

CVC600

This electronic instrument is used for the continous monitoring of VISCOTHERM hydraulic scroll drives on centrifuges. With the integrated high-performance microprocessor which insures absolute precise measuring and regulation (digitial signal processing). All important operation parameters can be directly adjusted on the CVC unit.
All operation parameters, measurement values and fault indication are transmitted over the integrated Profibus DP Interface to the main control system. With the universal software regulated valve amplifiers different types of pumps (also with position regulation) can be connected directly without changing any hardware. Plug connector terminals insure a quick and trouble free installation or exchange.

  

 

 


Click on the above CVC600 Front Panel for interactive control


Click on the above CVC600 Back Panel for interactive control

 

 

Highlights
Display of:

  • Bowl speed in rpm
  • Differential- or scroll speed in rpm
  • Hydraulic pressure (torque) in bar
  • Additional measurement channels (f.i. oil temperature, ...)
  • Operating hours of Rotodiff, Service interval display

Plaintext display of:

  • Cut-off pressure p2 in bar Feed pump "OFF"
  • Cut-off pressure p3 in bar Bowl drive "OFF"
  • Stationary bowl
  • Indication of faulty situation

Language selection:

  • German, English, French, Portuguese, Spanish, Dutch
    Norwegian, Italian

Process regulation:

  • 9 individual process regulation programs (linear or non linear)
  • For each regulation program individual adjustments of:
    • Base speed Dn
    • Regulation pressure p1
    • Regulation stiffness a (only with linear progr.)
    • Cut-off pressure p2 (Feed pump "OFF")
    • Cut-off pressure p3 (Bowl drive "OFF")
    • Pressure limitation (only with Visualization)
    • Differential speed range (only with Visualization)
    • Characteristic and form of program (only with Visualization

Speed regulation:

  • Regulation of the adjusted set value as well as automatic
    internal leakage compensation

Remote control:

  • Regulation programs can be selected by relay contacts
  • All regulation parameters can be adjusted over Profibus DP

Technical Specifications

Dimensions (W x H x D) 366 x 281 x 140 mm
14.5" x 11.1" x 5.5"
Cut-out dimensions (W x H) 328 x 242 mm
13.0" x 9.6"
Protection class IP65 (NEMA4X) front
IP40 (NEMA1) back
Temperature range 10°C - 40°C
50°F - 104°F
Power supply 90V - 250V / AC
Input frequency 48Hz - 62Hz
Power consumption 75 W
Weight ~5 kg
~11 lbs
Connections Plug connector terminals
Fuses 5x20mm or 6x32mm
System integration Profibus DP



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Downloads

(PDF and ZIP files)
Product flyer CVC600
Operation manual CVC600 (BA 156, 4MB)
Installation in switch cabinet

GSD File
GSD File (german)
GSD File (english)
GSD File (french)
GSD File (spanish)
GSD File (portuguese)
GSD File (italian)

Connecting a SLC500 (AP-001)
Connecting a C7-633 (only measurement), (AP-002)
Sample Projectfiles AP-002.ZIP
Flowdiagram CVC600 changing values by PB (AP-003)
Connecting a C7-633 (AP-004)
Sample Projectfiles AP-004.ZIP
Profibus Troubleshooting (AP-005)
Simatic Step 7 Project Integration (AP-006)

All files and information on this website are made
available without guarantee of any kind.

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All Rights Reserved. Copyright © VISCOTHERM AG, 2009