Dayton 1EJE9 DPDT Time Delay Relay Wiring for 208V 3-Phase Heater Fan/Louver Control

45 8

#1 21669632 04 Sep 2013 11:13

Chris LeBlanc Chris LeBlanc

Anonymous

Post #1
21669632 04 Sep 2013 11:13

Hello,

I have a Dayton 1EJE9 (Grainger part number) DPDT time delay relay that I am looking to wire into a heater circuit to control a fan and electric louver. What I want is, when the heaters come on the fan and louvers come one. When the heaters go off, the fan and louvers will stay on for a set period of time.

Wiring the fan and louver in I understand fine. Its the control power that I am having trouble with. In the attached image I will be using function "D", Off Delay. My fan will be wired into terminals 25 & 28 and my louvers will be on terminals 15 & 18. My control power of my heater unit is 208 3phase. So my question is;

Would I use one line of the constant three phase on terminal A1 a ground connection on A2 and line of the switched 3 phase on terminal S? Or would that be incorrect.

I tested this using setup using +24VDC on A1 -24VDC on A2 and switched +24VDC on and off on terminal S and the relay worked as it should for function "D" I just am not an electrician and have little experience with 3 phase power.

Any help would be greatly appreciated.

Thanks,
Chris
ADVERTISEMENT
#2 21669633 06 Sep 2013 14:54

Mark Harrington Mark Harrington

Anonymous

Post #2
21669633 06 Sep 2013 14:54

Need a datasheet

Some diagrams would also be helpfull

Thats the specs below always helps if you upload these as well
Item Time Delay Relay
Type Time Delay
Contact Form DPDT
Base Type DIN Rail
Number of Contacts 2
Function Multifunction
Contact Amp Rating (Resistive) 15
Contact Amp Rating (Inductive) 7
Contact Material Silver Alloy
HP @ 120V 1/2
HP @ 240V 1
Coil Volts 12-240VAC/DC
Coil VA Rating 3
Hz 50/60
Min. Time Setting 0.1 sec.
Max. Time Setting 240 hrs.
Display LED
Standards E49375
Green Environmental Attribute Programmable Timer Enables Reduced Energy Consumption
Green Certification or Other Recognition RoHS Compliant
ADVERTISEMENT
#3 21669634 06 Sep 2013 15:21

Chris LeBlanc Chris LeBlanc

Anonymous

Post #3
21669634 06 Sep 2013 15:21

Thank you. I attached the documents that I have on the relay and a schematic that I put together. As I said, I am not an electrician, so I hope the schematic makes sense. Let me know if I can provide any more information.

Thanks again,
Chris
#4 21669635 06 Sep 2013 16:52

Mark Harrington Mark Harrington

Anonymous

Post #4
21669635 06 Sep 2013 16:52

Cheers Chris that does help alot I can away go now and attempt to provide an reasonable answer
ADVERTISEMENT
#5 21669636 06 Sep 2013 17:05

Mark Harrington Mark Harrington

Anonymous

Post #5
21669636 06 Sep 2013 17:05

Your diagram is correct Chris Cant see any problems with what your doing

The only question i would ask is where is your trigger coming from A mechanical switch ? Or a heater thermostat and is this wired into the heater element as well or does this operate as a separate entity

Example I use a independent thermostat This would be powered by a separate 120vac in your case isolation transformer which produces five/ 12volts volts for CPU control operating a further relay or opt coupled trigger from a 12 volts supply which is the way I would interpret this

Or

If this is conventional stat that is wired to the heater I can see what your doing with the switch so I’m assuming its independent which I sincerely hope it is
#6 21669637 06 Sep 2013 17:15

Mark Harrington Mark Harrington

Anonymous

Post #6
21669637 06 Sep 2013 17:15

See upload for my own suggestion to this as How I would interpret this
#7 21669638 06 Sep 2013 17:16

Mark Harrington Mark Harrington

Anonymous

Post #7
21669638 06 Sep 2013 17:16

Re draw image below "Safest way of doing this no mistakes No electric shocks this way"

S is simply the input Picture this as a gated switch there is no direct conection to the permanant live that is must be fed to the coil contacts to pull in the switch for D function OR SHOULDNT BE HMMM !!

Or you can make this 24 volt out switched from the Micro controlled thermostat Easy to do this or put this together

However I see they dont tell you what S trigger voltage should be ??

NB !!!! Not good check this with manufacturer first !!

Ask "What should S highest voltage(Tigger Voltage be ) and is this directly coupled to the contactor coil Normally this is rated at 24 volts for the contactor coil The trigger voltage may be the same or it may be rated lower

Find this out first if nessary check this on a dc power supply with no connections at all for your heater and louver connections See next diagram
ADVERTISEMENT
#8 21669639 06 Sep 2013 17:31

Mark Harrington Mark Harrington

Anonymous

Post #8
21669639 06 Sep 2013 17:31

Next Diagram showing what I think you must check before proceeding

This is not documented clearly in the PDF datasheet

Beg your pardon it is so 12 to 240 volts into coil max 3VA rated H

owever No mention of what S MAX / MIN volts in should be

Thats a bit disturbing !! In fact is quite worrying that they havent memtioned this

Double check what is S max trigger voltage

And

Important !!

Is S isolated from the coil Should be !! I would have thought to have S isolated its probably Triac controlled So i would use opto coupler device to ensure isolation btw Stat and contactor trigger with direct coupled 12Ovac into coil

May be that if you use 24Vac in then trigger must be 24 vac in

If 120vac in then may be you have to have 120vac S trigger voltage Thats what you MUST check

FIND OUT IN ALL CASES WHAT S SHOULD BE WITH RESPCET TOP DC AND AC INPUT TO CONTACTOR COIL AND IF S IS ISLOLATED
#9 21669640 06 Sep 2013 17:47

Mark Harrington Mark Harrington

Anonymous

Post #9
21669640 06 Sep 2013 17:47

One final point I see no mention of trigger current I would have thought that was important as well Still such is the data made available today Appauling !!

Make a point of pointing this out to them at the same time and mention this too and above all Demand the answers from them
Create an account, log in here. You will receive points by participating in discussions.
Join this discussion.

Install Elektroda application

Didn't find an answer? Ask Artificial Intelligence

*I agree to send the question to OpenAI, Anthropic PBC, Perplexity AI, Inc., Kagi Inc., Google LLC - owners of language models in order to prepare the best response. The companies may monitor and log information entered into the form.

*I agree to publicly display my question and answer. The question and answer will be publicly available to everyone. The process may take a few minutes. Upon completion, you will be redirected to the page with the answer.

Wait...(2min)

Topic summary

The discussion centers on wiring a Dayton 1EJE9 DPDT time delay relay for controlling a 208V 3-phase heater fan and electric louver system using the Off Delay function (function "D"). The user intends for the fan and louvers to activate with the heater and remain on for a set delay after the heater turns off. The relay coil voltage rating is 12-240VAC/DC with a 3VA rating, and the relay contacts are rated for 15A resistive and 7A inductive loads. The main wiring question concerns the correct control power connections: whether to use one line of the constant three-phase supply on terminal A1, ground on A2, and the switched line on terminal S. Testing with 24VDC signals on these terminals showed the relay functioning correctly, but the user seeks confirmation for 208V 3-phase application. Responses emphasize the importance of verifying the trigger voltage and isolation requirements for terminal S, which is not clearly specified in the datasheet. It is recommended to confirm the maximum and minimum trigger voltages for terminal S, whether it is isolated from the coil, and the required trigger current. Suggestions include using an optocoupler or isolation transformer to safely interface the relay coil with the control circuit, especially if the thermostat or trigger source operates at different voltages. The user’s schematic was reviewed and found generally correct, but caution is advised to ensure the trigger input voltage and isolation conform to manufacturer specifications to avoid electrical hazards.
Summary generated by the language model.

Dayton 1EJE9 DPDT Time Delay Relay Wiring for 208V 3-Phase Heater Fan/Louver Control

Didn't find an answer? Ask Artificial Intelligence

Topic summary