I was given an old magnetek 503 VFD by a friend that's an electrician. He teaches the electrical classes at a college, he didn't seem to recall anything besides its and old VFD they got somehow and they have no need for it. He seemed to think it was possibly part of a donation from someone.
Anyway here's my question. I could kind of tell looking at it it was kind of old, the rear heatsink was caked with some sort of black crud, the fan bearing seemed to be failing. It has some sort of inspection mark on it dated mid 1995 (not sure that was the place that made it or installation, etc). It's made for 3 phase 480V he said he saw no reason 120 single wouldn't run it. I also tried using a variac and transformer to boost 110 to 480 single phase. I'm still having the same issue with it though.
When I power it up I hear the electronic inrush type sound, about 8-10 sec later the control panel/LCD come on.
LCD says CPF00 which according to the manual has many meanings.
Fault: Transmission error or control function hardware fault (including internal RAM, external RAM or PROM.)
Description: Transmission between the GPD 503 and remote operator is not established within 5 seconds after the power supply is turned on. (Displayed on remote operator.)
It's displaying error so display seems to work, I see no blown caps, fuse, etc inside of it. I see one fairly large IC dated 1986. It also has a pair of removable ICs like the really old PC bios used. I reseated these chips to no success. I'm thinking because it's so old maybe something is corrupt. It shows the error so i'm thinking at least some RAM and the firmware must be intact. It takes about twice as long for it to come up so i'm wondering if maybe even at 480v single phase it's not charging the caps, and PSU fast enough.
I know I could ask my friend if in one of the labs they have if they have access to or some way to create 3 phase to test it and see if my last guess was correct.
Want to see what people think if it's related to input power or a failure of something in the drive. I'm really tempted to just part it out because even if works on 3 phase 480 I don't think i'd have any use for that.
Anyway here's my question. I could kind of tell looking at it it was kind of old, the rear heatsink was caked with some sort of black crud, the fan bearing seemed to be failing. It has some sort of inspection mark on it dated mid 1995 (not sure that was the place that made it or installation, etc). It's made for 3 phase 480V he said he saw no reason 120 single wouldn't run it. I also tried using a variac and transformer to boost 110 to 480 single phase. I'm still having the same issue with it though.
When I power it up I hear the electronic inrush type sound, about 8-10 sec later the control panel/LCD come on.
LCD says CPF00 which according to the manual has many meanings.
Fault: Transmission error or control function hardware fault (including internal RAM, external RAM or PROM.)
Description: Transmission between the GPD 503 and remote operator is not established within 5 seconds after the power supply is turned on. (Displayed on remote operator.)
It's displaying error so display seems to work, I see no blown caps, fuse, etc inside of it. I see one fairly large IC dated 1986. It also has a pair of removable ICs like the really old PC bios used. I reseated these chips to no success. I'm thinking because it's so old maybe something is corrupt. It shows the error so i'm thinking at least some RAM and the firmware must be intact. It takes about twice as long for it to come up so i'm wondering if maybe even at 480v single phase it's not charging the caps, and PSU fast enough.
I know I could ask my friend if in one of the labs they have if they have access to or some way to create 3 phase to test it and see if my last guess was correct.
Want to see what people think if it's related to input power or a failure of something in the drive. I'm really tempted to just part it out because even if works on 3 phase 480 I don't think i'd have any use for that.