SSAC TDMB Series Data Sheet

TDMB SeriesTimer - Delay-on-Make/Delay-on-Break

Connection:

L1 N/L2

8-pin octal SPDT

The TDMB combines both delay-on-make and
delay-on-break functions into one plug-in package.
Selection of the time period is accomplished with
dual switches, one for the on delay and the other
for the off delay. SPDT or DPDT output options
provide isolated, 10A switching capability.

Operation (Delay-on-Make/Delay-on-Break):

Input voltage must be applied at all times. The output
relay is de-energized. Upon closure of the initiate switch,
the green LED glows and the delay-on-make time delay
(T1) begins. At the end of T1, the output relay energizes
and the red LED glows. When the initiate switch opens,
the green LED turns OFF and the delay-on-break time
delay (T2) begins. At the end of T2, the output relay de­energizes and the red LED turns OFF.
Reset: Removing input voltage resets time delay and
output. Opening the initiate switch during the delay-on­make delay, resets T1. Closing the initiate switch during
the delay-on-break delay, resets T2.

For more information see:
Appendix A, pages 156-164 for function descriptions

and diagrams.

Appendix B, page 165, Figure 8 for dimensional drawing.

Digi-Set Binary Switch Operation:

Features

• Switch settable time delays from

0.1s - 10,230s in 3 ranges

• ±2% setting accuracy

• ±0.1% repeat accuracy

• 10A, SPDT or DPDT output contacts
Approvals:

Auxiliary Products:

• Panel mount kit: P / N : BZ 1

• 11-pin socket: P/N: NDS-11

• Octal 8-pin socket: P/N: NDS-8

• Hold-down clips (sold in pairs):

P/N: PSC8 (NDS-8)
P/N: PSC11 (NDS-11)

Available Models:

TDMB411
TDMB411D
TDMB413D

If desired part number is not listed, please call us to
see if it is technically possible to build.

TDMB422
TDMB422D
TDMB622

11-pin DPDT
(P/N ends with D)

L1 N/L2

Relay contacts are isolated.

Order Table:

TDMB

X
Input Voltage

─A - 24 to 240VAC/DC
─D - 12 to 48VDC
─1 - 12VDC*
─2 - 24VAC
─3 - 24VDC
─4 - 120VAC
─5 - 110VDC
─6 - 230VAC

*No control status LED for 12VDC

X

Delay-on-Make

─1 - 0.1 - 102.3s in

0.1s increments
─2 - 1 - 1023s in 1s

increments

─3 - 10 - 10230s in

10s increments

X

Delay-on-Break

0.1s increments

increments

10s increments

Specications

Time Delay

Type ...................................Microcontroller circuitry

Range** ................................0.1 - 102.3s in 0.1s increments

1 - 1023s in 1s increments
10 - 10,230s in 10s increments

Repeat Accuracy ........................±0.1% or 20ms, whichever is greater

Setting Accuracy ........................≤ ±2% or 50ms, whichever is greater

Reset Time ..............................≤ 150ms

Time Delay vs Temp. & Voltage ...........≤ ±2%

Control LED Indicator. . . . . . . . . . . . . . . . . . . . Green; on when the initiate switch is closed

Input

Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 or 24VDC; 24, 120, or 230VAC;

24 to 240VAC/DC; 12 to 48VDC

Tolerance 12VDC & 24VDC/AC .......-15% - 20%

110 to 230VAC/DC .......-20% - 10%

AC Line Frequency / DC Ripple ...........50/60 Hz / ≤ 10%

Power Consumption .....................AC ≤ 2VA; DC ≤ 2W

Output

Type ...................................Electromechanical relay

Form ...................................SPDT or DPDT

94

─1 - 0.1 - 102.3s in

─2 - 1 - 1023s in 1s

─3 - 10 - 10230s in

X

Type Plug/Output Form

─Blank - Octal plug (8-pin) SPDT
─D - 11-pin plug DPDT

Rating .................................10A resistive @ 120/240VAC & 28VDC;

1/3 hp @ 230VAC

Life ....................................Mechanical - 1 x107; Electrical - 1 x 10

Max. Switching Voltage ..................250VAC

Relay LED Indicator .....................Red; on when output relay energizes

(not included on 12VDC units)

Protection

Insulation Resistance .....................≥ 100M

Polarity ................................DC units are reverse polarity protected

Isolation Voltage ........................≥ 1500V RMS input to output

Mechanical

Mounting ..............................Plug-in socket

Dimensions .............................3.2 x 2.4 x 1.8 in. (81.3 x 60.7 x 45.2 mm)

Termination ............................Octal 8-pin plug-in, magnal 11-pin plug-in

Environmental

Operating / Storage Temperature .........-20° to 60°C / -30° to 85°C

Weight .................................≅ 6 oz (170 g)

** For CE approved applications, power must be removed from the unit when a switch
position is changed.

5

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Appendix A - Timer Functions

Selecting a Timer’s Function

Selecting one of the ve 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
ve most popular functions, plus other common functions. Instantaneous contacts, accumulation, pause timing functions, and ashing 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.

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

Understanding Time Diagrams

Time diagrams are used to show the relative operation of switches,
controls, and loads as time progresses. Time begins at the rst 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
dene 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.

THE FIVE MOST USED FUNCTIONS

TIME DIAGRAM

Example:

Input Applied

Off

Initiate Closed

Switch Open

Output Energized

(Normally De-energized

Open)

R = Reset TD = Time Delay S1 = Initiate Switch

Undened time

Delay-on-Break (Release)

t = Incomplete Time Delay

156

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Accumulating
Delay-on-Make (Operate)

Appendix A - Timer Functions

INTERNATIONAL TIMING FUNCTION SYMBOLS

= Delay-on-Make; ON-delay

= Delay-on-Break; OFF-delay

= Delay-on-Make & 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

®

Delay-on-Make: (ProgramaCube

(ON-delay, Delay on Operate, On Delay, Operate Delay, Delay On, Prepurge Delay)
OPERATION: Upon application of input voltage, the time delay begins. The output (relay or solid state)
is de-energized before and during the time delay. At the end of the time delay, the output energizes
and remains energized until input voltage is removed.
RESET: Removing input voltage resets the time delay and output.
See: HRPS, KRPS, KSPS, KSPU, NHPS, NHPU, TDM, TRDU

Function M)

Extra Functions Included in Some Delay-on-Make (DOM) Timers:

®

Accumulating Time Delay Feature: (ProgramaCube

Some DOM timers allow the time delay to be stopped and held and then resumed by opening and closing
an external switch. The total time delay, TD is the sum of the accumulated partial time delays, “t”.
See: KRPD, KRPS, HRPS, NHPS, KSPD, KSPS, TRDU

Function AM)

= 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 & Interval; Single Pulse Generator

Delay-on-Make (ON-delay)

Instantaneous Contacts:

Some DOM timers have a set of instantaneous contacts in addition to the delayed contacts. Instantaneous
contacts energize when input voltage is applied and remain until voltage is removed.

Delay-on-Make, Normally Closed Output:

All relay output delay-on-make timers with normally closed contacts include this function. (See Delay­on-Make NC Contacts) This function is also available in solid-state output timers. The solid-state output
energizes when input voltage is applied. The time delay begins when an optional initiate switch S1 is closed
(timing starts when voltage is applied if S1 is not used). The output de-energizes at the end of the time delay.
Reset: Opening S1 resets the time delay and the output immediately energizes (or remains energized).
Removing input voltage resets the time delay and de-energizes the output.
See: KSD4, THD4, TS4, TSD4

®

Interval: (ProgramaCube

(Impulse-ON, Single Pulse on Operate, On Interval, Interval On, Pulse Shaping, Bypass Timing)
OPERATION: Upon application of input voltage, the time delay begins. The output (relay or solid
state) energizes during the time delay. At the end of time delay the output de-energizes and remains
de-energized until input voltage is removed.
RESET: Removing input voltage resets the time delay and output.
See: HRPS, KRPS, KSPS, KSPU, NHPS, NHPU, TDI, TSD2

Function I)

Extra Functions Included on Some Interval Timers:

Instantaneous Contacts:

Some Interval timers have a set of intantaneous contacts in addition to the delayed contacts.
Intantaneous contacts energize when input voltage is applied and remain until voltage is removed.

Delay-on-Make (Normally Closed)

Interval (Impulse ON)

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Legend

V = Voltage NO = Normally Open Contact
R = Reset NC = Normally Closed Contact
TD = Time Delay t = Incomplete (Partial) Time Delay
S1 = Initiate Switch

L = Load

= Undened time

157