1224

Dimensions are shown for

reference purposes only.

Dimensions are in inches over

(millimeters) unless otherwise

specified.

Specifications and availability

subject to change.

P&B

Catalog 1308242

Issued 3-03

www.tycoelectronics.com

Technical support:

Refer to inside back cover.

Initial Dielectric Strength

Between Open Contacts: 500V rms, 60 Hz.

Between All Other Conductors: 500V rms, 60 Hz.

Mid-Priced CMOS IC Time Delay Relay

•

Choice of timing modes

– Delay on operate

– Delay on release

– Delay on dropout (no input required during timing)

– Interval on

•

Knob or resistor adjustable types

•

10A output relay with DPDT contacts

•

Various models time from 0.1 to 180 sec.

File E22575

File LR15734

Contact Data @ 25

Arrangements: 2 Form C (DPDT).

Material: Silver-cadmium oxide alloy.

Rating: 10A @ 30VDC or 277VAC, resistive; 1/2 HP @ 250VAC; 1/3 HP @

120VAC.

Expected Mechanical Life: 10 million operations.

Expected Electrical Life: 100,000 operations, min., at rated load.

Input Data @ 25

Voltage: 24 & 120VAC and 12 & 24VDC.

Power Requirement: AC Types: Typically less than 3 VA.

DC Types: Typically less than 3 W.

Initiate Time: Delay on dropout timers must have input voltage applied for

a minimum of three seconds for dropout function to be

guaranteed.

Transient Protection: Yes.

Reverse Voltage Protection: Yes.

Environmental Data

Temperature Range: Storage: -55

°C to +85°C.

Operating: -10

°C to +55°C.

Mechanical Data

Termination: 8- or 11-pin octal style plug.

Enclosure: White plastic case. Knob adjustable types have dial scale for

reference only.

Sockets: Models with 8-pin base fit either 27E122 or 27E891 (snap-on)

screw terminal sockets. 11-pin types fit either 27E123 or

27E892 (snap-on) screw terminal sockets.

Weight: 6 oz. (170g) approximately.

Timing Modes

Delay on operate – Delay period begins when input voltage is applied. At

the end of the delay period, the relay will operate and will not release until

input voltage is removed. Reset occurs when input voltage is reapplied.

Delay on release – Input voltage must be applied continuously to operate

the internal relay. When the control switch is closed, the relay energizes.

When the control switch is opened, timing begins. When timing is

complete, the relay will de-energize. Time may be reset to zero during

timing by closing the control switch.

Delay on dropout – The relay operates immediately upon application of

input voltage. Timing begins when input voltage is removed. When timing

is complete, the relay will de-energize. Reset occurs when input voltage is

reapplied.

Interval on (with control switch) – Input voltage must be applied

continuously to operate the internal relay. The relay energizes and timing

begins when the external switch is closed. At the end of the time delay

period the relay will de-energize. Reset is accomplished by opening and

reclosing the control switch.

Timing Specifications

Timing Ranges: From 0.1 to 180 sec.

Timing Adjustment: External resistor and knob adjustable.

Tolerance (for AC units add

Knob Adj. Types:–0, +20% of max. specified at high end of timing range;

min. specified, or less, at low end.

Fixed Types:

±5%.

Res. Adj. Types:

±5% at high end of timing range; min. specified, or less,

at low end.

Delta Time (for AC units add

Repeatability (for AC units add

Release Time: 60 ms, typ.; 100 ms, max.

Recycle Time: 60 ms, typ.; 100 ms, max.

Input Voltages & Limits @ 25

°C

TIME

INPUT

VOLTAGE

ON

OFF

N.O. RELAY

CONTACTS

ON

OFF

CONTROL

SWITCH

ON

OFF

ON

OFF

N.O. RELAY

CONTACTS

TIME

TIME

TIME

INPUT

VOLTAGE

ON

OFF

N.O. RELAY

CONTACTS

ON

OFF

CONTROL

SWITCH

ON

OFF

ON

OFF

N.O. RELAY

CONTACTS

➛

➛

➛

➛

Voltage

Nominal

Minimum

Maximum

Type

Voltage

Voltage

Voltage

AC

24

20

28

120

105

130

DC

12

11

13

24

20

32

Note: DC voltage must be filtered (5% p-p ripple max. at nom. voltage).

AC models will operate on 50 or 60 Hz.

Users should thoroughly review the technical data before selecting a product part

number. It is recommended that user also seek out the pertinent approvals files of

the agencies/laboratories and review them to ensure the product meets the

requirements for a given application.