276

Time Delay Relays

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TIME DELAY RELAYS

The largest selection of time delay relays known since 1968 for its reliable designs that provide long service lives with low maintenance costs. Versatile

multifunction time delay relays give you the option of choosing among functions and time delay ranges to ensure that you receive the perfect timer to ﬁt your

needs. Electromechanical relay-output time delay relays are available with a number of different functions and assure isolation between input and output, as

well as no voltage drop across output contact. Solid-state time delay relays have no moving parts to arc and wear out over time, giving them a lifespan of up

to 100x that of a relay-output timer. In addition, all solid state time delay relays are fully encapsulated to protect against shock, vibration, humidity, etc.

Timer Function Guide .........................................................................278

Multifunction

TRDU Series ....................................................................................... 279

TRU Series.......................................................................................... 282

ASQU / ASTU Series .......................................................................... 284

DSQU / DSTU Series .......................................................................... 286

Dedicated

On Delay

T10 SERIES ......................................................................................... 288

Delay-on-Make

ERDM Series ...................................................................................... 289

HRDM Series...................................................................................... 291

KRDM Series ...................................................................................... 293

KRPS Series........................................................................................ 295

KSD1 Series ....................................................................................... 298

KSDU Series ....................................................................................... 300

KSPS Series........................................................................................ 302

MSM Series ....................................................................................... 305

ORM Series ........................................................................................ 307

PRLM Series ....................................................................................... 309

TDM / TDMH / TDML Series ............................................................. 311

TDU / TDUH / TDUL Series ................................................................ 313

TH1 Series .......................................................................................... 315

THD1B410.5S ..................................................................................... 317

TMV8000 / TSU2000 Series .............................................................. 319

TRM Series......................................................................................... 321

TS1 Series .......................................................................................... 323

TSD1 Series........................................................................................ 325

Delay-on-Make, Normally Closed

TS441165 ........................................................................................... 327

Delay-on-Break

HRDB Series ....................................................................................... 329

HRPS / HRIS Series ............................................................................ 331

KRDB Series ....................................................................................... 333

KSDB Series ....................................................................................... 335

ORB Series ......................................................................................... 337

TDB / TDBH / TDBL Series ................................................................. 339

TDUB Series ....................................................................................... 341

THDB Series ....................................................................................... 343

TRB Series .......................................................................................... 345

TSB Series .......................................................................................... 347

TSDB Series ....................................................................................... 349

Single Shot

HRDS Series ....................................................................................... 351

HSPZA22SL ........................................................................................ 353

KRDS Series ....................................................................................... 355

KSDS Series ....................................................................................... 357

ORS Series ......................................................................................... 359

PRS65 ................................................................................................. 361

TDS / TDSH / TDSL Series ................................................................. 362

TDUS Series ....................................................................................... 364

THC / THS Series ............................................................................... 366

THDS Series ....................................................................................... 368

TRS Series .......................................................................................... 370

TSDS Series ....................................................................................... 372

TSS Series .......................................................................................... 374

TIME DELAY RELAYS

277

Time Delay Relays

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Application Guide, visit

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Interval

ERDI Series......................................................................................... 376

HRDI Series ........................................................................................ 378

KRDI Series ........................................................................................ 380

KSD2 Series ....................................................................................... 382

KSPU Series ....................................................................................... 384

TDI / TDIH / TDIL Series..................................................................... 386

TDUI / TDUIH / TDUIL Series ............................................................. 388

THD2 Series ....................................................................................... 390

THD7 Series ....................................................................................... 392

TS2 / TS6 Series ................................................................................ 394

TSD2 Series........................................................................................ 396

TSD6 Series........................................................................................ 398

TSD7 Series........................................................................................ 400

Retriggerable Single Shot

KRD9 Series ....................................................................................... 402

TSD94110SB ...................................................................................... 404

Recyle

ERD3425A .......................................................................................... 405

ESDR Series ....................................................................................... 407

HRDR Series ....................................................................................... 410

KRD3 Series ....................................................................................... 412

KRDR Series ....................................................................................... 414

KSD3 Series ....................................................................................... 416

KSDR Series ....................................................................................... 418

KSPD Series ....................................................................................... 420

RS Series ............................................................................................ 422

TDR Series.......................................................................................... 424

THD3C42A0 ........................................................................................ 426

TSD3411S........................................................................................... 428

TSDR Series ....................................................................................... 430

Percentage

PTHF4900DK....................................................................................... 432

Dual Function

TDMB Series ...................................................................................... 434

ESD52233 ........................................................................................... 436

KRPD Series ....................................................................................... 438

HVAC

CT Series ............................................................................................ 440

T2D120A15M ..................................................................................... 442

TA Series ............................................................................................ 444

TAC1 Series ........................................................................................ 446

TL Series............................................................................................. 448

TSA141300 ......................................................................................... 450

Coin Vending

HRV Series ......................................................................................... 451

TIME DELAY RELAYS

Time Delay Relays

Function Selection Guide

Selection Questions

1) The timing starts when the initiate (starting) contacts are:

A) Closed B) Opened

2) What is the status of the output (or load) during timing?

A) On B) Off C) On/Off

3) Will the load de-energize (or remain de-energized) if the

initiate (starting) contacts are opened during timing?

A) Yes B) No

THE FIVE MOST USED FUNCTIONS

Understanding Time Diagrams

Time diagrams are used to show the relative operation of

switches, controls, and loads as time progresses. Time begins

at the ﬁrst vertical boundary. There may be a line indicating the

start of the operation or it may just begin with the transition

of the device that starts the operation. Each row in the time

diagram represents a separate component. These rows will be

labeled with the name of the device or its terminal connection

numbers. In a bistable or digital system, the switches, controls,

or loads can only be ON or OFF. The time lines are drawn to

represent these two possible conditions. Vertical lines are used

to deﬁne important starting or ending points in the operation.

The example to the right is the most common type of time

diagram in use in North America. It shows the energizing of

loads, and the closing of switches and contacts by an ascending

vertical transition of the time line. Opening switches or contacts

or de-energizing loads are represented by descending

vertical transitions.

TIME DIAGRAM

Example:

Input

Applied

Off

Initiate Switch

Closed

Open

Output

(Normally Open)

Energized

De-energized

DELAY-ON-BREAK (RELEASE)

V = Voltage R = Reset S1 = Initiate Switch TD = Time Delay

t = Incomplete Time Delay L = Load = Undeﬁned Time

International Timing Function Symbols

= Delay-on-Make; ON-delay

= Delay-on-Break; OFF-delay

= Delay-on-Make and Break; ON and OFF-delay

= Interval; Impulse-ON

= Trailing Edge Interval; Impulse-OFF

= Single Shot; Pulse Former

= Flasher - ON Time First; Recycling Equal Times - ON First

= Flasher - OFF Time First; Recycling Equal Times - OFF First

= Recycling - Unequal Times; Pulse Generator

= Recycling - Unequal Times Starting with ON or OFF

= Delay-on-Make and Interval; Single Pulse Generator

Selecting a Timer’s Function

Selecting one of the ﬁve most common timing functions can be as easy as answering three questions on the chart below. If you

have trouble answering these questions, try drawing a connection diagram that shows how the timer and load are connected.

Time diagrams and written descriptions of the ﬁve most popular functions, plus other common functions. Instantaneous contacts,

accumulation, pause timing functions, and ﬂashing LED’s are included in some units to expand the versatility of the timer. These

expanded operations are explained on the product’s catalog page. Time diagrams are used on these pages along with text and

international symbols for functions.

TIMER FUNCTION GUIDE

278

TIME DELAY RELAYS