Time delay relays and solid state timers use solid state electronic devices to provide a time delay. They may have displays, pots or other means of operator interface. They may also have electromechanical or solid state outputs.   The number of time ranges on relays and timers are single or multiple:   Single time ranges may be fixed or programmable. Multiple time ranges can be programmed for multiple ranges. A minimum and maximum time...
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Q & A on Time Delay Relays

We asked our users for their input on Time Delay Relays. Here are the results of 59 users familiar with Time Delay Relays.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice |

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing time delay relay design?
6 answers
Answers:
Power Contractors with in built time delay will add to uniqueness. Presently both had to be mounted separately resulting in space constraint.
~Sanjay A Adbol A, Manufacturer, Mumbai, India
PC programmability, digital displays and controls
~Jon R, Engineer, Clearwater, FL
Electronic control of timing intervals
~Wayne H, Builder/Contractor, Washington, DC
Low ESR capacitors in power supplies
~Kurt M, Design Engineer, Acton, MA
Low cost I/O
~Bob H, Engineer, N Andover, MA
Solid state.
~Engineer, Atlacomulco, Mexico

Q:
From your perspective, which companies are creating the most innovative time delay relays?
10 answers
Answers:
A nitrous oxide gas racing company seems to be making the best one, but very expensive.
~Hal C, Owner of welding/ fab business, Houston, TX
To date in India we are using local makes only.
~Sanjay A Adbol A, Manufacturer, Mumbai, India
Dare Electronics - custom manufacturer
~Kurt M, Design Engineer, Acton, MA
I like the Allen Bradley HR700
~General Corporate Mgmt, Findlay, OH
OMRON, ARTECHE, SIEMENS, ABB
~Engineering, Design, Quezon City, Philippines
ABB Schneider Electric
~Bob H, Engineer, N Andover, MA
Omron, carlogavazzi
~Engineering, Process/Production, ShenZhen, China
Schneider Electric
~Neal B., Engineer, Houston, TX
Telemecanique
~Engineer, Atlacomulco, Mexico
Koyo, Fuji
~Wayne H, Builder/Contractor, Washington, DC

Applications and UseTop

Q:
What are some of the applications you have used time delay relays for?
18 answers
Answers:
Under voltage ride-through circuits for 480V motor starters. Temporary bypass of shutdown signal or permissive start signal for motor starter control circuits.
~Neal B., Engineer, Houston, TX
In simple applications they did not have the need for PLC type controls but needed time-on, time-off, pulse, etc type controls.
~Jon R, Engineer, Clearwater, FL
Reduced tension starter for large AC motor. Measuring output response of electronics devices. Alarm systems.
~Engineer, Atlacomulco, Mexico
We are using time delay relay for "A" Batch Centrifugal Machine used to extract final sugar from massecuite.
~Sanjay A Adbol A, Manufacturer, Mumbai, India
Delay start to reduce inrush current, momentary toggle solutions with hard switched inputs.
~Wayne H, Builder/Contractor, Washington, DC
To control a pump motors run time to fill a tank on a float switch.
~General Corporate Mgmt, Findlay, OH
Compressor off after a couple seconds after electric valve off
~Marketing/Sales, Kawasaki, Japan
Used for fuel control on a top fuel harley dragster
~Hal C, Owner of welding/ fab business, Houston, TX
2 speed motor control of large fans Alarm system
~Bob H, Engineer, N Andover, MA
Door circuits,Pumpcircuits,Elevator circuits.
~Engineering, Faculty/Staff/Student, Stonewall, MS
Hardwired safety circuits in control systems
~Engineering, Other, Modderfontein, South Africa
Ventilation control, heat press timers
~Engineering, Design, Worthing, Great Britain
Inrush current limiting
~Kurt M, Design Engineer, Acton, MA
Industrial applications
~Lisboa, Portugal
Protection Relays
~Engineering, Design, Quezon City, Philippines
Control system
~Engineering, Design, Ahmedabad, India
On our panel
~Engineering, Process/Production, ShenZhen, China
555circuits
~Engineering, Faculty/Staff/Student, Uae, United Arab Emirates

Q:
Please share with us any “non-standard” applications that time delay relays have been used for.
4 answers
Answers:
Our use is limited to Centrifugal Machine Application only.
~Sanjay A Adbol A, Manufacturer, Mumbai, India
Limiting current inrush in an airborne application.
~Kurt M, Design Engineer, Acton, MA
Pellet loader containers in plastic process.
~Engineer, Atlacomulco, Mexico
Top fuel harley racing
~Hal C, Owner of welding/ fab business, Houston, TX

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of time delay relays?
1 answers
Answers:
See #9
~Jon R, Engineer, Clearwater, FL

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
10 answers
Answers:
A affordable digital product would be nice if it was affordable, also one where I didn't have to use another control relay would also be nice.
~General Corporate Mgmt, Findlay, OH
Off-delay or on-delay with both timed and non-timed contacts with variable time adjustment.
~Neal B., Engineer, Houston, TX
Simple control, less expensive options, reliability, wide time range options.
~Wayne H, Builder/Contractor, Washington, DC
Short time rise. Multi ranges. Small size. Print card montage.
~Engineer, Atlacomulco, Mexico
Digital with easy delay change capability, vibration resistant
~Hal C, Owner of welding/ fab business, Houston, TX
More military grade selection / 400Hz AC operation
~Kurt M, Design Engineer, Acton, MA
Delay have function about process function in
~Engineering, Process/Production, ShenZhen, China
Simple and legible controls
~Jon R, Engineer, Clearwater, FL
As mentioned in point 5
~Sanjay A Adbol A, Manufacturer, Mumbai, India
Smaller Foot Print
~Bob H, Engineer, N Andover, MA

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using time delay relays?
5 answers
Answers:
Do some research first, many different choices out there.
~Hal C, Owner of welding/ fab business, Houston, TX
Make sure you know all of your operating conditions
~Kurt M, Design Engineer, Acton, MA
Talk to a technical person at a manufacturer.
~Neal B., Engineer, Houston, TX
Read the fine print
~Jon R, Engineer, Clearwater, FL
Do your research
~Bob H, Engineer, N Andover, MA

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of time delay relays?
5 answers
Answers:
Take time to fully understand the operation of the TDR including failure modes.
~Bob H, Engineer, N Andover, MA
Allow plenty of time adjustment when ordering material for prototyping.
~Kurt M, Design Engineer, Acton, MA
Know the difference between delay off and delay on!
~Jon R, Engineer, Clearwater, FL
Know what the parameters of the device are.
~Hal C, Owner of welding/ fab business, Houston, TX
Obtain instruction booklet on line.
~Neal B., Engineer, Houston, TX


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