Double electronic PWM A+B regulator for Sauer-Danfoss Series 90 pumps
DESCRIPTION
The electronic regulator MDE-V90 can control two Sauer-Danfoss pumps series 90 with option KA or KP.
The input signals can come from two 1kOhm potentiometers supplied directly by +5V regulator output (or by supply voltage in ratiometric version).
To verify the interruption of a wire or the a potentiometer failure it is recommended to connect, in series to each potentiometer, two resistors, each with a value of about 10% of the potentiometer's value to limit the range of the command signal between 0.5V and 4.5V.
MDE-V90 regulator can also control directly an optional safety valve (dump valve) every time a pump is activated.
The two channels for the two pumps, in the "double" version, are completely independent (except the ENABLE signal which is the same for both pumps).
INPUTS
- n° 2 analog input, 2.5V in rest position, with range from 0V÷ 5V (recommended 0.5V ÷ 4.5V with range control);
or range 25%-50%-75% of supply voltage (ratiometric version - Danfoss signal).
- n° 1 ON/OFF input to enable outputs (unique for the two pumps).
OUTPUTS
- n° 2 couples of 200Hz PWM outputs to command the two proportional coils of the pump series 90;
- n° 1 ON/OFF output for an optional DUMP VALVE, supplied when at least one pump is activated;
- n° 1 +5V stabilized output to supply potentiometers (maximum output current = 50 mA).
MAIN FEATURES
- Indipendent minimum and maximum currents calibration for each PWM output signal;
- The validity of analog input signal range, dead band and useful programmable range can be controlled to ensure a
greater safety during the operations;
- A power output for the dump valve is activated every time a proportional output is switched on (for this output is
possible to set a switch off delay to prevent pressure peaks on the hydraulic circuit);
- Two LEDs provide informations on the operativity of the regulator and help in troubleshooting indicating the fault type
with a fixed number of flashes;
- Unique supply voltage from 10 to 30 Vdc;
- 24 pins fast socket connector IP68;
- A serial port with proprietary protocol can be used for calibration using a programming keyboard PRG2 (only current
calibration) or a Personal Computer (with special serial adapter AIS and Sepsim Windows® software) for complete
control of operational parameters;
- a "single" version of the regulator is also available to command a single pump.
Double electronic PWM A+B regulator for Sauer-Danfoss series 90 pumps
CONNECTIONS
male connector 24 pins (view from side pin)
programming connector
ORDERING CODES
24 pins flying female connector kit with crimping contacts, caps, rubber protection and programming connector
Code: PCVF241
Serial programming keyboard PRG2
Code: PPRG2
Serial interface adapter (AIS) for communication with PC (software Sepsim for Windows® included)
Code: PISP
TECHNICAL CHARACTERISTICS