Neptune-Plus | Emmeci Elettronica – Design and manufacture of electronic boards and systems

Neptune-Plus - New programmable driver with over-boost

Drivers


General features

Neptune-Plus - Neptune-Plus

The NEPTUNE-PLUS driver has been designed to solve many problems related to the intervention speed of electromechanical actuators or electro-powered 24VDC (solenoid valves, electric brakes, solenoids, etc.).
Using the NEPTUNE-PLUS is possible to significantly reduce the response (activation time) of the actuators connected to it, allowing an increase of the working speed. The reduction of the activation time is obtained by the sending of an instantaneous overvoltage, which makes it possible to magnetize the actuator in a shorter time than would be obtainable at the nominal voltage of 24VDC. The use of an instantaneous overvoltage allows to increase the performance of the actuator without causing overheating or damage.

The driver with over-boost NEPTUNE-PLUS is equipped with 9 inputs:

  • inputs I1-I6 can be combined with 2 outputs with user-programmable funcionts
  • inputs I7-I9 can be used to manage special functions (qualifications, disabling, encoder connection)

Trought the serial port (RS485) and PC IBM compatible with Windows™ XP or higher operating system and NeptunePlus-Com software, which can not only determine which conditions cause the activation of outputs, but also set the activation times and enable any memory functions (start / stop function), useful, for example, for driving brake-clutch assemblies.

Through NEPTUNE-PLUS it is therefore possible to perform numerous functions that normally require an increase in the complexity of the control panel such as:

  • Significant reduction of the time required to switch the actuator from the rest condition to the working position (in the case of solenoid valves the time is reduced by 30-50%)
  • of an actuator activation functions with the simultaneous presence of several control signals
  • Control of an actuator with very precise timing and strictly constant, even in the presence of irregular duration control signals
  • Possibility of controlling the actuator not in a continuous manner, but fragmented (with working time and user-programmable pause), for the entire duration of the control signal. This function, in the field of dispensing adhesives, allows to obtain a considerable saving on the amount of the deposited adhesive, with great advantages both in economic and environmental terms.
  • Command brake / clutch groups with reduction of the switching time between the condition of braking and the clutch engagement.
  • Possibility of management also on variable speed lines thanks to the presence of the encoder input.

The NEPTUNE-PLUS comes with software NeptunePlus-Com that allows you to set all operation parameters via PC with an RS485 serial port (see USB – RS485 adapter to add the RS485 serial port on PCs that do not have them).

The NEPTUNE-PLUS is equipped with self-diagnostic functions that reveal any abnormalities on the load (disconnected, overload) and on the internal temperature of the driver (overheating) that increase the reliability and help the identification of working conditions altered.

Compared to other systems, the NEPTUNE-PLUS driver offers several advantages:

Ease of Installation both new installations and for existing ones:

  • The NEPTUNE-PLUS cardScre is inserted along the cables that connect the actuator to the control system (PLC, cam-controller etc.) Without requiring special precautions.
  • For its operation needs only supply voltage to 24VDC, thanks to the internal converter that generates the overvoltage excitation.

of the actuators Safeguarding: The overvoltage pulse has a duration of a few msec, so you avoid the overheating of the controlled coils, with the possibility of damage, typical of systems in which the actuators are powered at voltages higher than the nominal one.

Programmability of the pulse duration overvoltage (over-boost), the activation time of the outputs and functions related to the activation of the outputs (combination of inputs, storage functions, etc.). They are also programmable conditions that signal anomalies.

Simplicity: setup, installation and verification of operation, thanks to the use of free software NeptunePlus-Com for systems with Windows™ XP or higher operating system.

Technical details

Characteristic of the NEPTUNE-PLUS board

DIMENSION (Lenght x H. x Depht.) 45 x 101 x 120mm
FIXING DIN Guide
CONNECTIONS Screw terminal for cable Ø max. 1,5mm
POWER SUPPLY 22-26Vcc
EFFICIENCY OF DC-DC CONVERTER >80%
SERIAL COMUNICATION PORT RS485 ModBus protocol

Input characteristic

PILOT INPUTS I1-I8 PNP logic, voltage 10-30 Vcc with input resistor 10 kΩ
PILOT INPUTS I9 (encoder) PNP logic, voltage 10-30 Vcc with input resistor 3,2 kΩ
MAXIMUM FREQUENCY OF THE ENCODER INPUT ≥ 100 KHz
TYPE OF ENCODER Incremental with a PNP or push-pull(1) output
ENCODER PULSE COUNTING MODE On the falling edge of the signal
DUTY-CICLE SIGNAL ENCODER INPUTS 20% ≤ Duty-cicle ≤ 80%
DELAY BETWEEN ENCODER INPUT VARIATION AND OUTPUT MANAGEMENT START ≤ 10 µsec
DELAY BETWEEN INPUT VARIATION AND OUTPUT ACTIVATION ≤ 200 µsec

Outputs characteristic

POWER OUTPUTS AVAILABLE 2
TYPE OF POWER OUTPUTS In PNP logic with internal transitory suppressor
OVER-BOOST VOLTAGE DURATION Programmable from 0,1 to 100,0 msec
TIMING DURATION TOLERANCE ± 100 µs (timer mode)
± 1 pulses (encoder mode)
MAX. OUTPUT CURRENT FOR EACH CHANNEL ≅ 2,5A (2)
MAX. OUTPUT POWER FOR EACH CHANNEL 20W
TYPE OF ALARM OUTPUTS In PNP logic 50 mA max. rated output voltage 24Vcc

(1) The minimum requirements of the NEPTUNE-PLUS are the presence of a free encoder output (or able to supply a current of at least five amps) in PNP logic or push-pull. The negative of the encoder supply must be in common with the one power supply the NEPTUNE-PLUS.

(2) This value indicates the peak current used by the driver to enter “over-current block/short-circuit” mode (with simultaneous activation of output “FAULT”). This current refers to value measured on the load applied between terminals +OUT and -OUT of each output during the entire activation phase (boost +24Vcc). This current control works only if the negative terminal of the load is taken from terminal -OUT; it is not working if it is taken from the negative terminal of the NEPTUNE-PLUS supply.

F.A.Q.

What are the products drivers from Emmeci Electronics?

The drivers are electronic cards specially designed to activate a host of devices normally used in industrial automation, such as solenoid valves, electromagnets, brake-clutch assemblies, etc.
All Emmeci Electronics drivers are also equipped with the over-boost function, which allows to make faster the activation of the connected device. With Emmeci driver is possible, for example, make faster the operation of the guns for hot or cold glue, allowing the deposition of adhesive points very small even on high-speed lines.

What is the overboost?

It’s a function, present in all the products drivers from Emmeci Electronics, which makes faster the device controlled by the driver. For more information read the previous FAQ.

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