User avatar
DaveEV
Forum Supporter
Posts: 6239
Joined: Fri Apr 23, 2010 3:51 pm
Location: San Diego

Re: Mods for the Blink EVSE ! (was Fix)

Mon Jun 03, 2019 11:47 pm

Valdemar wrote:The contactor on my Blink has trouble closing lately, rattling loudly, making contact finally but sometimes not. I want to try to replace it but unsure what coil voltage I should get as there is no letter that designates the coil on the part.

Per Eaton catalog some of the coil types:
C25DNF240A - 110-120V ac
C25DNF240B - 208-240V ac
C25DNF240T - 24V ac
C25DNF2401T - 24V DC

I suspect it is the "B" 208-240V coil as there is no neutral coming in and use of lower voltages or DC seems unlikely, anyone can confirm?
Yes, that's the one you want. I had to replace the contactor on mine a while back as one of the contactor's contacts started overheating.

PS - Anyone want to buy a Blink EVSE? Works perfectly now at 30A now that the contactor's been replaced and the handle doesn't show any signs of the overheating due to poor crimps that others have reported.

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Mods for the Blink EVSE ! (was Fix)

Tue Jun 04, 2019 9:05 am

DaveEV wrote:
Valdemar wrote:The contactor on my Blink has trouble closing lately, rattling loudly, making contact finally but sometimes not. I want to try to replace it but unsure what coil voltage I should get as there is no letter that designates the coil on the part.

Per Eaton catalog some of the coil types:
C25DNF240A - 110-120V ac
C25DNF240B - 208-240V ac
C25DNF240T - 24V ac
C25DNF2401T - 24V DC

I suspect it is the "B" 208-240V coil as there is no neutral coming in and use of lower voltages or DC seems unlikely, anyone can confirm?
Yes, that's the one you want. I had to replace the contactor on mine a while back as one of the contactor's contacts started overheating.

PS - Anyone want to buy a Blink EVSE? Works perfectly now at 30A now that the contactor's been replaced and the handle doesn't show any signs of the overheating due to poor crimps that others have reported.
Thanks! I popped the front cover from the contactor yesterday and the contacts looked good, no signs of overheating. I guess replacing the contactor would be the easiest first attempt and they can be had for $20-30 on eBay, so that's what I'll try first if the problem persists. Not sure if it can be taken apart, it may just need a good cleaning. Of course the real fix would be to get a new EVSE, but I'm not ready to invest into one given there is a good chance we will not be getting another EV when the Leaf is retired in a couple of years. The Blink served me well so far, no major issues, I need to power cycle it to fix the frozen screen like once a year, apart from that it has been rock solid, for 16A charging anyway.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

GlennD
Posts: 1493
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 May 2013
Leaf Number: 410357
Location: Anaheim

Re: Mods for the Blink EVSE ! (was Fix)

Tue Jun 04, 2019 8:56 pm

I have never seen a real life unit. I have just purchased cables on eBay. I think that setting the un=its t0 24A helped a lot. I received a cable with appalling Crimps that was unburned.

On the contsctor side it the contacts look clean than I would not replace it. Instead I would meter the contacts. There is no point in replacing a good unit,
:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e
White Ioniq limited.It sits just fine

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 12:03 am

GlennD wrote: On the contsctor side it the contacts look clean than I would not replace it. Instead I would meter the contacts. There is no point in replacing a good unit,
That's what I think too. What it likely means then I'd have to take the thing apart and replace the smaller relay on the PCB, which is more work :(

Image
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

GlennD
Posts: 1493
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 May 2013
Leaf Number: 410357
Location: Anaheim

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 1:50 pm

heck across the contactor coil to see if it has voltage first. I use keying relays on the DIY openEVSE boards and I have never had one fail. The non-DIY version has a built in solid state driver.
:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e
White Ioniq limited.It sits just fine

GlennD
Posts: 1493
Joined: Sun Dec 18, 2011 7:14 pm
Delivery Date: 20 May 2013
Leaf Number: 410357
Location: Anaheim

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 1:58 pm

s understand it earlier in this thread there is instructions on making the unit dumb. you might want to kill its intelligence first and see what happens.
:
2013 Pearl White SL Premium
Traded for a Cirrus White 2014 Mercedes B (totaled)
2016 Urano Gray eGolf SEL w/ drive assist
Loved the VW but it sat too low for my old body
Back to a Cirrus White 2017 B250e
White Ioniq limited.It sits just fine

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 2:04 pm

GlennD wrote:heck across the contactor coil to see if it has voltage first. I use keying relays on the DIY openEVSE boards and I have never had one fail. The non-DIY version has a built in solid state driver.
There is definitely voltage across the coil as the contactor is trying to close when this happens. If anything I should measure current as the small relay contacts may have developed high resistance due to arcing. As I mentioned it is very intermittent, it may not happen for weeks, then suddenly it is stuttering for several times in a row, then it is fine again. Hard to troubleshoot properly. Some debris came out when I blew compressed air into the contactor, that could have been it. The "smarts" are working, it is the "dumbs" that are not.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

User avatar
Nubo
Posts: 5461
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 2:37 pm

Valdemar wrote:
GlennD wrote:heck across the contactor coil to see if it has voltage first. I use keying relays on the DIY openEVSE boards and I have never had one fail. The non-DIY version has a built in solid state driver.
There is definitely voltage across the coil as the contactor is trying to close when this happens. If anything I should measure current as the small relay contacts may have developed high resistance due to arcing. As I mentioned it is very intermittent, it may not happen for weeks, then suddenly it is stuttering for several times in a row, then it is fine again. Hard to troubleshoot properly. Some debris came out when I blew compressed air into the contactor, that could have been it. The "smarts" are working, it is the "dumbs" that are not.
Replacing the relay would seem like the surest path to reliability.
I noticed you're still working with polymers.

User avatar
davewill
Posts: 5081
Joined: Thu Mar 17, 2011 6:04 pm
Location: San Diego, CA, US

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 7:41 pm

Valdemar wrote: There is definitely voltage across the coil as the contactor is trying to close when this happens. If anything I should measure current as the small relay contacts may have developed high resistance due to arcing. As I mentioned it is very intermittent, it may not happen for weeks, then suddenly it is stuttering for several times in a row, then it is fine again. Hard to troubleshoot properly. Some debris came out when I blew compressed air into the contactor, that could have been it. The "smarts" are working, it is the "dumbs" that are not.
You might have fixed it. I'd be tempted to wait for it to fail again, before replacing parts. My Blink is still going strong. I had to replace the cord and handle a few years back, but it's been charging my RAV4EV @ 30a for years with no complaints. I open it up every now and then to be sure the connections inside are ok. It's going to be charging my Model 3 once it gets here. The Rav will be using an OpenEVSE I bought from GlennD a few years back.

It's kind of trippy to log into my Blink account and see 8 years of charging history collected.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Mods for the Blink EVSE ! (was Fix)

Wed Jun 05, 2019 8:40 pm

Yup, I'm gong to wait until it happens again, hopefully never :) My wi-fi module stopped working a while back, no charging history for me.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

Return to “Blink”