NAiS LT4H-L User Manual

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1
DIN 48 SIZE
DIGITAL TIMER
LT4H-L
Timers
Features
1. Economically priced in anticipation
of market needs.
• Economically priced to provide
excellent cost performance.
2. Display is a bright reflective-type
LCD.
3. Inherits all of the characteristics of
the LT4H digital timer.
• Seesaw switches ensure easy
operation.
• IP66 environmental protection.
• Shortened body (70.1 mm 2.760 inch
underhead).
4. UL, C-UL rating approved. CE
compliant.
5. Simultaneous release of DIN48
protective cover (soft type).
• Provides protection for surface and
buttons in dusty environments and from
dirty hands and gloves.
48
1.890
48
1.890
64.5
2.539
Part names
Time delay indicator
DOWN
UP
LOCK
RESET
smh
LOCK
RST
OP.
ON
87654321
Elapsed time display
DIP switches
Set time display
Time units display
Up keys
Down keys
Controlled output indicator
Reset indicator
Lock indicator
Reset switch
Lock switch
TIMER
LT4H
(Countdown time display)
Product types
UL File No.: E122222
C-UL File No.: E122222
mm inch
Time rangeProduct name Operating mode Output Operating voltage
Power down
insurance
Terminal type Part number
9.999 s (0.001 s~)
99.99 s (0.01 s~)
999.9 s (0.1 s~)
9999 s (1 s~)
99 min 59 s (1 s~)
999.9 min (0.1 min~)
99 h 59 min (1 min~)
999.9 h (0.1 h~)
DIN48 protective cover (soft type)
LT4H-L
digital timer
Option
Power ON delay (1)
Power ON delay (2)
Signal ON delay
Signal OFF delay
Pulse One-shot
Pulse ON-delay
Signal Flicker
Totalizing ON-delay
(8 modes)
Relay
(1 c)
Transistor
(1 a)
For the LT4H Series
100 to 240 V AC
24 V AC/DC
100 to 240 V AC
24 V AC/DC
12 to 24 V DC
12 to 24 V DC
Available 8 pins
LT4HL8-AC240V
LT4HL8-AC24V
LT4HLT8-AC240V
LT4HLT8-AC24V
LT4HL8-DC24V
LT4HLT8-DC24V
N-TC-48-1
LT4HL 02.1.9 6:25 PM Page 1

NAiS LT4H-L Specifications

General

Brand	NAiS
Model	LT4H-L
Category	Timer
Language	English

Summary

Product Types and Part Names

Product Types Overview

Lists the different product types available for the LT4H digital timer.

Part Names and Indicators

Identifies the names of parts and indicators on the LT4H digital timer.

Specifications

Dimensions and Mounting

Dimensions for Embedded and Front Panel Installation

Provides dimensional drawings for embedded and front panel mounting types.

Panel Cut-out Dimensions

Details the standard panel cut-out dimensions for installation.

Connected Installation Notes

Information regarding connected installations and panel thickness.

Terminal Layouts and Wiring Diagrams

Relay Output Terminal Layout

Diagram of terminal connections for relay output.

Transistor Output Terminal Layout

Diagram of terminal connections for transistor output.

Setting Operation Mode, Time Range, and Time

DIP Switch Settings for Operation Mode and Time Range

Instructions for setting operation mode and time range using DIP switches.

Setting the Time with Keys

Guide to setting the timer's time using the front panel keys.

Changing the Set Time During Operation

Explains how to modify the set time while the timer is active.

Power Failure Memory Functionality

Details the EEPROM used for storing settings during power outages.

Operation Mode Details

Power On Delay (1) Operation

Explanation and time chart for Power ON Delay (1) mode.

Power On Delay (2) Operation

Explanation and time chart for Power ON Delay (2) mode.

Signal On Delay Operation

Explanation and time chart for Signal ON Delay mode.

Signal Off Delay Operation

Explanation and time chart for Signal OFF Delay mode.

Pulse One-shot Operation

Explanation and time chart for Pulse One-shot mode.

Pulse On Delay Operation

Explanation and time chart for Pulse On Delay mode.

Signal Flicker Operation

Explanation and time chart for Signal Flicker mode.

Totalizing On Delay Operation

Explanation and time chart for Totalizing ON Delay mode.

Precautions for Using the LT4H-L

Terminal Wiring Precautions

Important notes and warnings regarding terminal connections and wiring practices.

Input Connection Precautions

Guidelines for safe and correct input signal connections.

Input and Output Signal Precautions

Advice on signal input types and output mode changes.

Usage Conditions and Environmental Precautions

Recommendations for operating environments and avoiding damage.

Operation Precautions for LT4H Timer

Specific operational advice and warnings for the LT4H digital timer.

Self-Diagnosis Function and Error Displays

Information on self-diagnosis and how to interpret error displays.

Common Options for DIN Size Timers

Terminal Sockets and Connectors

Details on available terminal sockets and their wiring.

Mounting Parts and Frames

Information on mounting rails, frames, and gaskets.

Available Accessories

List of accessories like panel covers for customization.

Installation Procedures

Surface Mount Installation

Step-by-step guide for surface mounting the timer.

Flush Mount Installation

Instructions for flush mounting the timer into a panel.

Mounting Cautions and Waterproofing

Important warnings regarding mounting and maintaining waterproofing.

Global Network and Contact Information

European Network Contacts

Contact details for Matsushita Electric Works in Europe.

North and South America Network Contacts

Contact details for Aromat Corporation in North and South America.

Asian Network Contacts

Contact details for Matsushita Electric Works in Asia.

Japan Network Contacts

Contact details for Matsushita Electric Works, Ltd. in Japan.