Design requirement for product B
Target: Output constant current through the equipment
[url removed, login to view] voltage:
1.Output voltage: <DC36V; current:0-20A( with constant current set arbitrarily); The load varies in a wide range (0%--100%); The output precision is 0.1A.
2.Through the panel,the value of output current can be set. We can set displaying one information，such as the current、the voltage、the operating life、the external analog signal.
A: Control the operation and work-stop for the equipment through the terminal. Meanwhile the working signal and the obstacle signal are output.
B: MODBUS communication interface: Control the operation and work-stop for the equipment through the communication interface, set output current, meanwhile reflect working condition signal, current signal, voltage signal, obstacle signal etc…
C: Provide electrical power to external sensor through the DC24V power output interface. The equipment have an analogue input interface（4-20mA）, whose range can be set and display through the panel. Through the communication interface the equipment can access the data.
4.Protection and fault
A: The circuit has some necessary protection functions, such as short circuit、overload、overvoltage、open circuit etc. It also have automatic recovery function after lifting the alarm. Through the panel, display and fault recording associated with the alarm can be observed.
B: The DC output positive and negative port can be changed at a specific time,which can be set through the panel(between 0 and 60 minutes).
Input voltage:AC220V or DC24V
Display mode: LED or LCD
16 freelancers are bidding on average $3492 for this job
Hi I am a power electronics engineer. I have developed similar product. I can provide working prototype and finish product. Input voltage: 20~30Vdc Output voltage:10~36Vdc Current:0-20A Display mode: LCD
Hi Iam a Post graduate in power electronics and having good industrial experience in product design and development. I can help you to finish the work.