Datasheet

ManualsBrandsPANASONIC ManualsTime Switches & Multifunction RelaysTime Delay Relay, Timer, 1 potential-free CO contact (relay) 5 varieties of delayed pickup, delayed

LT4H-W

Features

• Wide time range

The operation time range covers from

0.01 sec. to 9999 hours.

The individual setting can be performed

on each of 1 and 2 timers.

99.99s 99min59s 99h59min

999.9s 999.9min 999.9h

9999s 9999h

• Bright and Easy-to-Read Display

A brand new bright 2-color back light

LCD display. The easy-to-read screen

in any location makes checking and

setting procedures a cinch.

• Simple Operation

Seesaw buttons make operating the

unit even easier than before.

• Short Body of only 64.5 mm 2.539

inch (screw terminal type) or 70.1

mm 2.760 inch (pin type)

With a short body, it is easy to install in

even narrow control panels.

• Conforms to IP66’s Weather

Resistant Standards

The water-proof panel keeps out water

and dirt for reliable operation even in

poor environments.

• Screw terminal (M3.5) and Pin Types

are Both Standard Options

The two terminal types are standard

options to support either front panel

installation or embedded installation.

• Changeable Panel Cover

Also offers a black panel cover to meet

your design considerations.

• Compliant with UL, c-UL and CE.

1.890

64.5

2.539

8-pin type 11-pin type Screw terminal

type

UL File No.: E122222

C-UL File No.: E122222

mm inch

Product types

Time range Operating mode Output Operating voltage Power down insurance Terminal type Part number

99.99s

999.9s

9999s

99min59s

999.9min

99h59min

999.9h

9999h

Pulse input:

• Delayed one shot

• OFF-start flicker

• ON-start flicker

Integrating input:

• Delayed one shot

• OFF-start flicker

• ON-start flicker

Relay

(1 c)

100 to 240 V AC

Available

8 pins LT4HW8-AC240V

11 pins LT4HW-AC240V

Screw terminal LT4HW-AC240VS

24 V AC

8 pins LT4HW8-AC24V

11 pins LT4HW-AC24V

Screw terminal LT4HW-AC24VS

12 to 24 V DC

8 pins LT4HW8-DC24V

11 pins LT4HW-DC24V

Screw terminal LT4HW-DC24VS

Transistor

(1 a)

100 to 240 V AC

8 pins LT4HWT8-AC240V

11 pins LT4HWT-AC240V

Screw terminal LT4HWT-AC240VS

24 V AC

8 pins LT4HWT8-AC24V

11 pins LT4HWT-AC24V

Screw terminal LT4HWT-AC24VS

12 to 24 V DC

8 pins LT4HWT8-DC24V

11 pins LT4HWT-DC24V

Screw terminal LT4HWT-DC24VS

* A rubber gasket (ATC18002) and a mounting frame (AT8-DA4) are included.

Part names

DOWN

SET/LOCK

RESET

smh

LOCK

OP.

TIMER

LT4H-W

Fourth digit First digit

Controlled output indicator

Lock indicator

Reset switch

Set/Lock switch

T1/T2 Operation display

Display for change-over

Set time display

Time units display

Up keys

Down keys

(Subtraction elapsed

time display)

Elapsed time display

between T1/T2 settings

(

Same for 8-pin and screw terminal type

)

DIP switches

2345678

DIN 48 SIZE

DIGITAL TIMER

LT4H-W

Digital

Timers

09/2009

Summary of content (8 pages)

PAGE 1
LT4H-W Digital Timers DIN 48 SIZE DIGITAL TIMER LT4H-W UL File No.: E122222 C-UL File No.: E122222 Features 48 1.890 48 1.890 64.5 2.539 mm inch 8-pin type 11-pin type Screw terminal type • Conforms to IP66’s Weather Resistant Standards The water-proof panel keeps out water and dirt for reliable operation even in poor environments. • Screw terminal (M3.
PAGE 2
LT4H-W Type Relay output type Transistor output type AC type DC type AC type DC type 100 to 240 V AC, 24 V AC 12 to 24 V DC 100 to 240V AC, 24V AC 12 to 24 V DC 50/60 Hz common — 50/60 Hz common — Max. 10 V A Max. 3 W Max. 10 V A Max. 3 W 5 A, 250 V AC 100 mA, 30 V DC 99.99s, 999.9s, 9999s, 99min59s, 999.9min, 99h59min, 999.
PAGE 3
LT4H-W (units: mm inch) Tolerance: p1.0 p.039 Dimensions • LT4H-W digital timer Pin type (Flush mount/Surface mount) Digital Timers Screw terminal type (Flush mount) 5.5 .217 48 1.890 64.5 2.539 5.5 .217 55.6 2.189 14.5 .571 TIMER T1 T2 T1 OP. T2 LOCK h m 44.5 1.752 44.5 1.752 s UP RESET SET/LOCK LT4H-W DOWN 7.5 .295 7.5 .
PAGE 4
LT4H-W Setting the operation mode and time range Setting procedure 1) Setting the time range (Timer T1/Timer T2) Set the time range with the DIP switches on the side of the LT4H-W timer. 1 2 3 Time range (Timer T1) *4 Minimum input reset, start, and stop signal width DIP switch No.
PAGE 5
LT4H-W Operation Mode Digital Timers PULSE : Pulse input PULSE PULSE A OFF-start/1 operation t1
PAGE 6
LT4H SERIES CAUTIONS FOR USE (Fig. A) Input contact point or transistor Input terminal 3 2 10 Input terminal 3 2 10 Power supply If independent power circuitry must be used, keep the input contacts or transistors separate from each other, as shown in Fig. B. Reset input Start input Stop input Lock input (Fig.
PAGE 7
Once the wiring to be used is completely installed and prior to installing this timer, confirm that there is complete insulation between the wires connected to the power terminals (2 each) and the wires connected to each input terminal. If the power and input lines are not insulated, a short-circuit may occur inside the timer and result in internal damage.
PAGE 8
R R T R Relay T Timer R Receive output from contact at relay R the unit for such continuous operation, use in conjunction with a relay as shown in the circuit in the diagram below. 7. Acquisition of CE marking Please abide by the conditions below when using in applications that comply with EN61812-1. 1) Overvoltage category III, pollution level 2 2) This timer employs a power supply without a transformer, so the power and input signal terminals are not insulated.