motor-driven pumps sigma/ 1 sigma/ 2 sigma/ 3
TRANSCRIPT
Motor-driven pumps
Sigma/ 1 Sigma/ 2 Sigma/ 3
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Control Type Features
Stroke length adjustment from 0 - 100% Digitally accurate stroking rate via keypad LC display Two-stage level switch input Flow monitor input External control via Pulse Control External control via 0/4-20mA signal
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Extended control options, e.g. free combination of mA/frequency ratio
Real stroke length measurement Easy pump calibration
Direct setting gph or lph Warning when leaving the calibrated range (+/- 10%)
New relay types: Warning, switch-off, power
Analog output for capacity Timer + program design software Profibus DP Programmable via PC
New Features Control Type
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Large illuminated LC display Quick change of display information
e.g. gph or stroke frequency Display of stroke length in % Optical indication of operation status (3 LED´s)
Display
i
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Removable power cord Retrofit relays:
Warning Switch-off Power Fault indicating relay Pacing relay
Relay combinations: Fault indication + pacing Switch-off + pacing
Diaphragm failure detector
Modular Design
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Speed Control
Microprocessor controller with an optimum combination of speed control and Stop/Go
operation offers an extensive control range with selective fine tuning
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Sigma/ 1 from 5 to 32 gph,
Sigma/ 2 from 15 to 111 gph,
Sigma/ 3 from 45 to 264 gph.
Three performance ranges –
one unified technical concept
based on the economical modular principle
Three performance ranges
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The overlapping pump performance ranges cover an extraordinarily wide spectrum.
The modular principle:
Many of the components employed in the Sigma range are identical and can be used throughout the series = simplified spare parts management less stockholding
Identical operating systems for all three pumps in the Sigma series = less training of users less danger of misuse more effective and safer function monitoring
THREEFOLD SIMPLICITY
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Sigma/ 1
Base can be turned90°
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Microprocessor control
optimum combination of speed control and digital stroking frequency.
easy-to-use operating menu
Display of all functions via the back-lit LCD display.
Proven precision
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frequency
display
open programming menustart /stopchange display info
relay; Profibus
external signals
ON / OFF
mains cable
Sigma Control VersionIntegrated operation panel
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Maximum safety:
the dual DEVELOPAN® diaphragm with sensor in the inter-diaphragm cavity guarantees effective protection even in the event of a diaphragm rupture.
Continous working with safety diaphragm
No process interruption
Dual DEVELOPAN® diaphragm with sensor
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push rod
return spring
worm gearuptake fork
eccentricmotor flange
stroke lengthadjustment
innerhousing
Plastichousing
Design and functionDrive
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Sigma pumps control types
multiple easy external control
Two-stageLevel switch
External Signals1. Potentially free contacts2. mA3. Profibus DP
Flow-monitor
Relay options:fault indicating, warning,switch-off; pacingmA output signal forCapacity in gphProfibus DP
“Pause” Remote ON/OFF Auxiliary frequency independently switchable frequency
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Sigma Control Version - integrated frequency inverter
feedback signal from stroke sensor
InternalControl
Contact signalsmA signals
Control of thestroke number
1 stroke is performed with the same speed as with a frequency of 60 strokes / min.:1 stroke/s, i.e. the stroke volume stay constant
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Sigma Control VersionControl of the stroke number
Pump with integrated stroke sensor Stroke sensor gives a feedback signal
for every sucessfully performed stroke The real speed is equal to the control signal
and the theoretically calculated stroke number Speed = Desired stroke number = Desired volume The frequency is varied under load until the
stroking rate equals to the theoretically calculated value
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Sigma’s PROFIBUS® interface
enables full integration of meteringtechnology into a PROFIBUS® processor control system.
Sigma with professional PROFIBUS®-DP functionality
Minimum installation costs – maximum operating safety
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Profibus DP
Probe Level
Sensor/Actor Level