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Thread: VFD Newbie questions

  1. #21
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    Quote Originally Posted by myspark View Post
    You are joking .
    This not how we run business. This working relationship is ok if you are a regular customer of Bob's Butcher shop.
    I don't want my better judgment become clouded just because of my relationship with supplier.
    I wasn’t. It’s your choice. My opinion.
    Tom
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  2. #22
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    RTFM

    I am doing...

    Regarding control wiring,
    0.3mm^ - 0.75mm^ , according to Google equates to ~ 18awg - 22awg...?

    What do most of you use for your control wire within the drive enclosure?
    I'm assuming you'd be using 600v rated wire...

  3. #23
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    Quote Originally Posted by sw_ross View Post
    I am doing...

    Regarding control wiring,
    0.3mm^ - 0.75mm^ , according to Google equates to ~ 18awg - 22awg...?

    What do most of you use for your control wire within the drive enclosure?
    I'm assuming you'd be using 600v rated wire...
    Usually we used 1mm^2. Some customers specified 1.5mm^2 for control wiring. That would be 17 AWG and 16 AWG. If could get these.
    The difference in cost would normally be insignificant but then we mostly supplied fairly large VFDs.

  4. #24
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    Quote Originally Posted by sw_ross View Post
    I am doing...

    Regarding control wiring,
    0.3mm^ - 0.75mm^ , according to Google equates to ~ 18awg - 22awg...?

    What do most of you use for your control wire within the drive enclosure?
    I'm assuming you'd be using 600v rated wire...
    Often control wiring can be class 2 circuit.
    I live for today, I'm just a day behind.

  5. #25
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    control wiring question

    Name:  VFDControlwiring.jpg
Views: 50
Size:  131.5 KB

    Given this information in the manual;

    1) If i wanted to jog the motor either forward or reverse, I would wire up 2 pushbuttons (non-latching), using SD as common and STF for forward and STR for reverse? (no voltage input allowed)

    2) If i wanted to use a pot. to control motor speed, I would use terminals 1, 2, & 3? Does the drive supply the 0-10v?


    Thanks for helping!

  6. #26
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    Quote Originally Posted by sw_ross View Post
    Name:  VFDControlwiring.jpg
Views: 50
Size:  131.5 KB

    Given this information in the manual;

    1) If i wanted to jog the motor either forward or reverse, I would wire up 2 pushbuttons (non-latching), using SD as common and STF for forward and STR for reverse? (no voltage input allowed)

    2) If i wanted to use a pot. to control motor speed, I would use terminals 1, 2, & 3? Does the drive supply the 0-10v?


    Thanks for helping!
    That would work, but usually there is another input you can assign to JOG with a preset speed.

    Yes, Yes.
    Tom
    TBLO

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    Quote Originally Posted by ptonsparky View Post
    That would work, but usually there is another input you can assign to JOG with a preset speed.

    Yes, Yes.
    Terminals can be reprogrammed for other functions according to one of the notes, what is printed there is the default settings.
    I live for today, I'm just a day behind.

  8. #28
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    Quote Originally Posted by sw_ross View Post
    Name:  VFDControlwiring.jpg
Views: 50
Size:  131.5 KB

    Given this information in the manual;

    1) If i wanted to jog the motor either forward or reverse, I would wire up 2 pushbuttons (non-latching), using SD as common and STF for forward and STR for reverse? (no voltage input allowed)"No voltage input allowed" means do not use an external voltage source, voltage for this circuit is supplied by the drive, but yes if you don't change any the functions from default, any signal on those two terminals will run the motor at whatever speed is selected. Many times drives have FWD and REV inputs as well as a "Run" or other "enable" input. On those you would need a direction input as well as a run input before the drive will be active.

    2) If i wanted to use a pot. to control motor speed, I would use terminals 1, 2, & 3? Does the drive supply the 0-10v?


    Thanks for helping!
    Actually the terminals on the drive should be labeled 10, 2 and 5, 0-10V is another control scheme and is between terminals 2 and 4 when used along with 4-20mA being a possible control scheme. Some of these functions also may be changeable in the parameter settings, but what is printed there is likely the default settings.

    Control voltage for the speed pot comes from the drive though, all you need to do is connect it to those terminals.
    I live for today, I'm just a day behind.

  9. #29
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    Thanks

  10. #30
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    Yup, 10,2,5
    Tom
    TBLO

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