How Do Heater Contactors and SSRs Control Heating Elements?

  • Thread starter Thread starter ismat143
  • Start date Start date
  • Tags Tags
    Heater
AI Thread Summary
Heater control is achieved through contactors and solid-state relays (SSRs), with SSRs regulating output via pulses from a PID controller. When 440 volts is applied to L1, L2, and L3, the K3 contactor activates automatically. The voltage at terminals 4, 5, and 6 corresponds to the 440V line voltage, while terminals 7, 8, and 9 receive pulsed 440V. The discussion emphasizes the importance of understanding how heating elements are turned on and off based on these voltage inputs. Proper circuit configuration is crucial for effective heating control.
ismat143
Messages
10
Reaction score
0
1.jpg


1.If i apply voltage 440volts at L1,L2,L3 the K3 (contactor) will get on automatically?
2.How this SSR work and what should be the voltage at 4,5,6 and 7,8,9(X1 terminals)?

The main thing i want to ask is how this heating 1 and heating 2 gets ON and OFF and at what voltage?

Thank you.
 
Engineering news on Phys.org
Welcome to PF ismat. It looks like the heaters are being controlled by SSR (which is a silicon controlled rectifier, I think) and its ouput is controlled by pluses supplied to the + and - terminals. These pulses could be coming from a PID controller. And K3 appears to be contacts for a relay. Are there other parts of the circuit you are not showing?

The voltage at 4,5,6 is just your 440V line voltage. The voltage at 7.8.9 will be pulsed 440V.
 
Thread 'Weird near-field phenomenon I get in my EM simulation'

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
View full post »

Thread 'EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity)'

Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
View full post »

Similar threads

Building a Safe and Efficient Induction Heater Circuit: Tips and Tricks
Replies
7
Views
6K
What Are Effective Methods to Control a Nichrome Coil Heater?
Replies
16
Views
4K
Converting a household space heater to DC
Replies
8
Views
3K
Is Induction Heating More Efficient Than Resistive Heating for Water?
Replies
5
Views
4K
Relays - Controlling voltage flowing for heater elements to maintain temperature
Replies
5
Views
2K
My IEC Contactor Coil keeps overheating
Replies
2
Views
4K
Resistive heating power AC vs rectified AC/DC
Replies
10
Views
4K
How Do Solar Panels Perform Under Different Loads and Light Intensities?
Replies
28
Views
4K
How Do You Calculate Frequency and Power for an Induction Heater?
Replies
3
Views
3K
Will This Transformer Setup Work for Heater Control?
Replies
10
Views
5K

Hot Threads

Recent Insights

Back
Top