Connect with us

Need help with SSR Wiring

Discussion in 'General Electronics Discussion' started by rcx_6000, May 19, 2016.

Scroll to continue with content
  1. rcx_6000

    rcx_6000

    12
    0
    Dec 31, 2015
    Wiring up a Solid State Relay on a common ground system to use a higher voltage on the starter. Just want to confirm I wiring this right before I start putting this together. Thanks.
    Turbine_10.jpg
     
  2. Minder

    Minder

    3,058
    651
    Apr 24, 2015
    Looks like it should work. Without knowing further details.
    M.
     
  3. dorke

    dorke

    2,342
    665
    Jun 20, 2015
    What SSR are you using?
    What kind of motor?
    What is written above "7.2v"?
    What diode do you plan to use?
     
  4. davenn

    davenn Moderator

    13,785
    1,936
    Sep 5, 2009
    ECU Signal ;)
     
  5. hevans1944

    hevans1944 Hop - AC8NS

    4,581
    2,142
    Jun 21, 2012
    I would have drawn this in a different color, but I suppose as long as it isn't drawn in yellow I can live with it. Looks like it will work. Same caveat as @Minder.
     
    davenn likes this.
  6. rcx_6000

    rcx_6000

    12
    0
    Dec 31, 2015
    Got a gas turbine that was designed with a 12v electrical system. I replaced it with a 7.2v xicoy setup so I got a 40a 220vdc ssr to run the starter off a 12v battery instead of using a regular relay. Using the starter connection from the ecu to drive the ssr. Because the starter, ecu, and glow plug use the engine as a ground I wanted to make sure the wiring is right before I wire it. Using a 30a 200v schottky diode on the motor I think.
     
  7. dorke

    dorke

    2,342
    665
    Jun 20, 2015
    Do you know what is the staring current ?
    Is your SSR (which is it?) input /output isolated?
     
  8. rcx_6000

    rcx_6000

    12
    0
    Dec 31, 2015
    The starting current is about 18 amps but both of the negative sides on the input and output on the SSR would be connected because of the common ground on the starter and the ecu
     
  9. rcx_6000

    rcx_6000

    12
    0
    Dec 31, 2015
    SSR Specs
    Product Model MGR-1DD220D40
    Control Mode DC-DC
    Load Current 40A
    Load Voltage 5-220VDC
    Control Voltage 3-32VDC
    Control Current DC3-25mA
    On voltage ≤1.5V
    Off Leakage Current ≤2mA
    On-off Time ≤10ms
    Dielectric Strength 2500VAC
    Insulation Resistance 1000M/500VDC

    And the diode is different, I at work so I went off memory.

    Diode Type: Schottky
    Diode Configuration: Dual common cathode
    Voltage (Vrrm): 60V
    Current (If average): 30A
    Forward voltage (Vf max): 850mV
    Current (Ifs max): 200A
    Operating temperature range: -65 ℃ ~ +150 ℃
    Package: TO-247AD
    Pins: 3
    SVHC: no SVHC
    Reverse Recovery Current (Irrm): 1A
    Closed Type: TO-247AD
    Current(If @ Vf): 15A
    Current (Ifsm): 200A
    Junction Temperature (Tj minimum): -65 ℃
    Junction Temperature (Tj maximum): 150 ℃
    Surface Mount Devices: Through Hole
    State time (IFSM measurement): 8.3ms
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-