23
Product types
DIN 48 SIZE
DIGITAL TIMER LT4H-W
Timers
Features
1. Wide time range
The operation time range covers from
0.01 sec. to 999 hours.
The individual setting can be performed
on each of the timers.
99.99s 99min59s 99h59min
999.9s 999min 999.9h
9999s 9999h
2. Bright and Easy-to-Read Display
A brand new bright 2-color back-lit LCD
display. The screen is easy-to-read in
any location, makes checking and set-
ting procedures a cinch.
3. Simple Operation
Seesaw buttons make setting and oper-
ation simple and easy.
4. Short Body of only 64.5 mm 2.54
inch (screw terminal type) or 70.1 mm
2.76 inch (pin type)
With a short body, it is easy to install
even in shallow control panels.
5. Conforms to IP66’s Weather
Resistant Standards
The water-proof front panel keeps out
water and dirt for reliable operation even
in poor environments.
6. Screw terminal and Pin Type are
Both Standard
The two terminal types are standard to
support either through-panel installation
or embedded installation.
7. Changeable Panel Cover
A black panel cover is also available to
meet your design requirements.
8. Conforms With EMC and Low
Voltage Directives
Conforms with EMC directives
(EN50081-2/EN50082-2) and low-volt-
age directives (VDE0435/Part 2021) for
CE certification vital for use in Europe.
9. EE-PROM Power Failure Memory
EE-PROM memory retains setting and
time data. Eliminates the need for bat-
tery replacement.
8 Pin type 11 Pin type Screw terminal
type
Time range Operation mode Output Operation voltage Power down insurance Terminal Part No.
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)
100-240 V AC
Available
8 pin LT4HW8-AC240V
11 pin LT4HW-AC240V
Screw LT4HW-AC240VS
24 V AC
8 pin LT4HW8-AC24V
11 pin LT4HW-AC24V
Screw LT4HW-AC24VS
12-24 V DC
8 pin LT4HW8-DC24V
11 pin LT4HW-DC24V
Screw LT4HW-DC24VS
Transistor
(1 a)
100-240 V AC
8 pin LT4HWT8-AC240V
11 pin LT4HWT-AC240V
Screw LT4HWT-AC240VS
24 V AC
8 pin LT4HWT8-AC24V
11 pin LT4HWT-AC24V
Screw LT4HWT-AC24VS
12-24 V DC
8 pin LT4HWT8-DC24V
11 pin LT4HWT-DC24V
Screw LT4HWT-DC24VS
UL File No.: E122222
CSA File No.: LR39291
24
Part names
Specifications
Item Ralay output type
AC type
100 to 240 V AC / 24 V AC
50/60 Hz common
Max. 10 V A 5 A, 250 V AC
99.99s, 999.9s, 9999s, 99min59s, 999.9min, 99h59min, 999.9h, 9999h (selected by DIP switch)
Addition (UP)/Subtraction (DOWN)
(2 directions selectable by DIP switch)
Pulse input: Delayed one shot, OFF-start flicker or ON-start flicker
Integrating input: Delayed one shot, OFF-start flicker or ON-start flicker
Min. input signal width: 1 ms, 20 ms (2 directions by selected by DIP switch)
Min. input signal width: 20 ms
Open collector input Input impedance: Max. 1 kΩ; Residual voltage: Max. 2V
Open impedance: 100 kΩor less, Max. energized voltage: 40 V DC
7-segment LCD, Elapsed value (backlight red LED), Setting value (backlight yellow LED)
EE-PROM (Min. 105overwriting)
± (0.005% + 50 ms) in case of power on start
± (0.005% + 20 ms) in case of reset or input signal start
(at fixed power off time)
Timed-out 1 Form C
100 mΩ(at 1 A 6 V DC)
Ag alloy/Au flash
2.0 ×107ope. (Except for switch operation parts)
1.0 ×105ope. (At rated control voltage)
85 to 110 % of rated operating voltage
2,000 Vrms for 1 min: Between live and dead metal parts
2,000 Vrms for 1 min: Between input and output
2,000 Vrms for 1 min: Between live and dead metal parts
2,000 Vrms for 1 min: Between input and output
1,000 Vrms for 1 min: Between contacts
Between live and dead metal parts
Min. 100 MΩ: Between input and output
Between contacts
Min. 100 MΩ: Between live and dead metal parts
Between input and output
Max. 0.5 s
10 to 55 Hz: 1 cycle/ min single amplitude of 0.35 mm .014 inch (10 min on 3 axes)
10 to 55 Hz: 1 cycle/ min single amplitude of 0.75 mm .030 inch (1 h on 3 axes)
Timed-out 1 Form A (Open collector)
—
—
—
1.0 ×107ope. (At rated control voltage)
12 to 24 V DC
—
Max. 3 W
100 to 240V AC
50/60 Hz common
Max. 10 V A 100 mA, 30 V DC
12 to 24 V DC
—
Max. 3 W
DC type Transistor output type
AC type DC type
Rating
Time
accuracy
(max.)
Contact
Life
Electrical
Mechanical
Operating
conditions
Operating voltage
Frequency
Power consumption
Control capacity (resistive)
Time range
Time counting direction
Operation mode
Signal, Reset, Stop input
Lock input
Input signal
Indication
Power failure memory
method
Operating time fluctuation
Temperature error
Voltage error
Setting error
Contact arrangement
Initial contact resistance
Contact material
Mechanical
Electrical
Operating voltage range
Initial breakdown voltage
Initial insulation resistance
(At 500 V DC)
Operating voltage reset
time Max 65° C (under the flow of nominal operating current at nominal voltage)
Temperature rise
Functional
Destructive
Vibration
resistance Min. 98 m 321.522 ft./s2(4 times on 3 axes)
Min. 294 m 964.567 ft./s2(5 times on 3 axes)
–10° C to 55° C +14° F to +131° F
Max. 85 % RH
860 to 1,060 h Pa
—8-pin/11-pin/screw terminal
IP66 (front panel with rubber gasket)
20 % or less — 20 % or less
Functional
Destructive
Ambient temperature
Ambient humidity
Air pressure
Ripple rate
Connection
Protective construction
Shock
resistance
Fourth digit First digit
T1
Controlled output indicator
Lock indicator
Reset switch
Set/Lock switch
SET/LOCK
RESET
LOCK
OP. T2
T1/T2 Operation display
Display for change-over
TIMER
T1
T2
Set time display
Time units display
Up keys
Down keys
DOWN
UP
h m s
(Subtraction elapsed
time display)
Elapsed time display
LT4H-W
between T1/T2 settings
(Same for 8-pin and screw terminal type)
1
DIP switches
2345678
ON
25
Dimensions (units: mm inch)
• LT4H-W digital timer
Terminal layout and wiring
• 8-Pin type
Relay output type Transistor output type Relay output type Transistor output type
• 11-Pin type
• Dimensions for through-panel installation (with adapter installed)
•
Dimensions for surface mount installations
•
Installation panel cut-out dimensions
The standard panel cut-out dimensions are shown
below. Use the installation frame (ATA4811) and rub-
ber gasket (ATC18002).
• For connected installations
Note 1: The installation panel thickness should be between 1
and 5 mm .039 and .197 inch.
Note 2: For connected installations, the waterproofing ability
between the unit and installation panel is lost.
5.5
7.5
.295
UP
m
DOWN
T1
T2
RESET
SET/LOCK
OP.
LOCK h
T1
T2
TIMER
s
LT4H-W
48
1.890
44.5
1.752 44.5
1.752
7.5
.295
64.5
.217
2.539 5.5 55.6 14.5
.217 2.189 .571
(Same for 8-pin type)
Screw-down terminal type
(through-panel installation)
Screw-down terminal type Pin type
Pin type (through-panel or
surface mount installation)
installation panel
Rubber gasket
ATC18002 (supplied)
SET/LOCK
48
1.890
DOWN
LOCK
TIMER
T1
48
1.890 48
1.890
1.890
50
1.969
RESET
OP.
T2
UP
h m
T1
T2
s
LT4H-W
163.5
2.500
66
2.598 50
1.969 66
2.598
1
TIMER
RESET
SET/LOCK
44.5
1.752
installation frame
ATA4811 (supplied)
48
DOWN
LT4H-W
T1
h
LOCK
T1
T2
OP.
T2
sm
UP
Rubber gasket
ATC18002 (supplied)
installation panel
ATA4811 (supplied)
90
3.543
(11p cap ATA4861
sold separately)
(8p cap AD8013
sold separately)
11-pin type
8-pin type
installation frame
( ) dimension is for 8-pin type.
(90.0)
95.5
(3.543)
3.760
ATA48011
(sold separately)
Device installation rail
(11-pin type ATC18004
sold separately)
DIN rail terminal block
(8-pin type ATC18003
sold separately)
80min.
3.150min.
80min.
3.150min.
45 0
+0.6
1.772 0
+.024
45 0
+0.6
1.772 0
+.024
45 0
+0.6
1.772 0
+.024
A=(48 × n – 2.5)+0.6
0 A=(1.890 × n – .098)+.024
0
A
When n timers are continuously installed, the dimension
(A) is calculated according to the following formula (n:
the number of the timers to be installed):
1 8
6
7
3
2
4 5
Signal
Reset
(–) (+)
Operation
voltage
11
1
Signal
Stop
Lock
Reset
4
2
3
568
9
10
7
COM
NO NC
(+)
Operation
(–) voltage
2
4
3
11
1
10
6
5 7 8
9
Signal
Stop
Lock
Reset
(–) (+)
Operation
voltage
Relay output type Transistor output type
• Screw terminal type
Lock
9
4
7
21
6
3
8
NC
COM
NO
5
10
Signal
Reset
Stop
(+) (–)
Operation
voltage
1 2
6 7
3 4
8 9
5
10
Lock
Signal
Reset
Stop
(–)(+)
voltage
Operation
26
Setting the operation mode, timer range, and time
Setting procedure 1) Setting the operation mode and timer range (Timer T1/Timer T2)
Set the operation mode and timer range with the DIP switches on the side of the unit.
DIP switches
Setting procedure 2) Setting the time
Set the set time with the keys on the front of the unit.
Front display section
DIP switch
Item DIP switch No.
1 2 3
ON ON ON 0.01 s to 99.99 s
OFF OFF OFF 0.1 s to 999.9 s
ON OFF OFF 1 s to 9999 s
OFF ON OFF 0 min 01 s to 99 min 59 s
ON ON OFF 0.1 min to 999.9 min
OFF OFF ON 0 h 01 min to 99 h 59 min
ON OFF ON 0.1 h to 999.9 h
OFF ON ON 1 h to 9999 h
Table 1: Setting the timer range (Timer T1)
Table 2: Setting the timer range (Timer T2)
Timer range
Operation mode Refer to table 1
1
2
3Minimum input reset, signal, and
stop signal width 20 ms 1 ms
4
Time delay direction Addition
Subtraction
5
Timer range Refer to table 2
6
7
8
ONOFF
DIP switch No.
6 7 8
ON ON ON
OFF OFF OFF
ON OFF OFF
OFF ON OFF
ON ON OFF
OFF OFF ON
ON OFF ON
OFF ON ON
Timer range
Note: Set the DIP switches before installing the unit.
* The 8-pin type does not have the stop input, so that the dip
switch can be changed over between reset and signal inputs.
The signal range of the lock input is fixed (minimum 20 ms).
123
DIP switches
45678
ON
QElapsed time display
WSet time display
ET1/T2operation indicator
RT1/T2setting value
selectable indicator
TControlled output
indicator
YLock indicator
UTime units display
IUP keys
Changes the corresponding digit of the set time in the addition direc-
tion (upwards)
ODOWN keys
Changes the corresponding digit of the set time in the subtraction
direction (downwards)
PRESET switch
Resets the elapsed time and the output
{Set/lock switch
Changes over the display between T1/T2settings, sets the opera-
tional mode, checks the operational mode and locks the operation of
each key (such as up, down or reset key).
RESET
UP
11
10
SET/LOCK
DOWN 9
8
6
5
4
3
T2
OP.
LOCK
T1
T2
TIMER
T1
LT4H-W
sh m
2
7
1
Fourth digit First digit
1) Setting or changing the operational mode
1. When the UP or DOWN key at the first digit is pressed with the set/lock switch
pressed, the mode is changed over to the setting mode.
2. The operational mode in the setting mode is changed over sequentially in the left or right direction by pressing the up or down key at the first digit, respectively.
3. The operational mode displayed at present is set by pressing the RESET key, and the display returns to the normal condition.
2) Checking the operational mode
When the UP or DOWN key at the second digit is pressed with the set/lock switch pressed, the operational mode can be checked.
The display returns to the normal condition after indicating the operational mode for about two seconds. (While the display indicates the operational mode for about two
seconds, the other indicators continue to operate normally.)
3) Setting the lock
When the UP or DOWN key at the fourth digit is pressed with the set/lock switch pressed, all keys on the unit are locked.
The timer does not accept any of UP, DOWN and RESET keys.
To release the lock setting, press the UP or DOWN key at the fourth digit again with the set/lock switch pressed.
* Operational mode, adding and subtracting and minimum input signal range cannot be set at T1and T2, respectively.
4) Changing over the T1/T2setting display
The T1/T2 setting display is changed over by pressing the SET/LOCK switch. (This operation gives no effect on the other operations. The set time and elapsed time
(residual time) at T1are linked with those at T2.)
• Changing the set time
1. It is possible to change the set time with the up and down keys even during time delay with the timer. However, be aware of the following points.
1) If the set time is changed to less than the elapsed time with the time delay set to the addition direction, time delay will continue until the elapsed time reaches full
scale, returns to zero, and then reaches the new set time. If the set time is changed to a time above the elapsed time, the time delay will continue until the elapsed
time reaches the new set time.
2) If the time delay is set to the subtraction direction, time delay will continue until “0” regardless of the new set time.
2. When the set times at T1and T2are set to 0, the output becomes ON only while the signal input is carried out. However, while the reset input is carried out, the out-
put becomes OFF.
Ex: Setting mode display
Pulse input
OFF-start
Repeating operation
Pulse input
OFF-start
One operation
Pulse input
ON-start
Repeating operation
Integrating input
OFF-start
One operation
Integrating input
ON-start
Repeating operation
OFF-start
Repeating operation
Integrating input
0.01 s to 99.99 s
0.1 s to 999.9 s
1 s to 9999 s
0 min 01 s to 99 min 59 s
0.1 min to 999.9 min
0 h 01 min to 99 h 59 min
0.1 h to 999.9 h
1 h to 9999 h
27
Delayed
one shot
A
: Pulse input
PULSE : Integrating input
INTEGRATION
• The pulse input mode starts the operation when the signal
input turns on.
• For power-on start operation jumper the signal terminal
(8-pin: Qto R, 11-pin: Eto 6and screw: to ).
96
• Each signal input such as signal, reset, stop and lock inputs is applied by a contact closure between the input terminal and
common terminal (8-pin type: terminal Q, 11-pin type: terminal Eand screw terminal: terminal ) respectively.
• The 8-pin type has no step mode. 6
• The integrating input mode is controlled by the total on-time
of the signal input.
• When the elapsed value is cleared by the reset input, the
output is reset.
• For power-on start operation jumper the signal terminal
(8-pin: Qto R, 11-pin: Eto 6and screw: to ).
96
OFF-start/1 operation t1<T1, t2<T2
A
PULSE
Power
Output
Reset
Signal
Stop
T1 T2 ta
ta+tb=T1
tctb td t1
tc+td=T2
T1 t2
supply
OFF-start/1 operation t1<T1, t2<T2
A
INTEGRATION
tb
Stop
Signal
Reset
Output
Power
ta T1tc td te tf tg th
ta+tb=T1
t1
tc+td=T2 tg+th=T2
t2
te+tf=T1
supply
OFF-start
flicker
B
OFF-start/repeating operation t1<T1, t2<T2
B
PULSE
tc
Power
Output
Stop
Reset
Signal
T2T1 T2T1 ta tb td t1 T1 t2
ta+tb=T1 tc+td=T2
supply
OFF-start/repeating operation t1<T1,
t2<T2
B
INTEGRATION
tb
Signal
Reset
Stop
Output ta
Power
T1
tc+td=T2
tetc td tf tg T2T1th t1
ta+tb=T1
t2
tg+th=T2te+tf=T1
supply
ON-start flicker
C
Remarks
and notes
ON-start/repeating operation t1<T1, t2<T2
CPULSE
tc
Signal
Reset
Stop
Output
Power
T2T1 T2T1 tbta
ta+tb=T1
T1 t2t1td
tc+td=T2
supply
ON-start/repeating operation t1<T1,
t2<T2
C
INTEGRATION
tb
Stop
Signal
Reset
Output
Power
ta
tc+td=T2
T1tf tgtc td te t1th T1 T2
ta+tb=T1 tg+th=T2
t2
te+tf=T1
supply
• When the power is turned on, the timer value is cleared.
• Timing operation will start when the signal becomes ON, and
the signal input is ignored during timing operation.
• The timer value is cleared after one operation.
• When the power is turned on, the timer value is not cleared.
(Power failure compensation function)
• The control output is held even if the power is turned off and
turned on again.
• After one operation, the elapsed value is cleared.
• When the power is turned on, the timer value is cleared.
• Timing operation will start when the signal becomes ON, and
the signal input is ignored during timing operation.
• When the power is turned on, the timer value is not cleared.
(Power failure compensation function)
• The control output is held even if the power is turned off and
turned on again.
• When the power is turned on, the timer value is cleared.
• Timing operation will start when the signal becomes ON, and
the signal input is ignored during timing operation.
• When the power is turned on, the timer value is not cleared.
(Power failure compensation function)
• The control output is held even if the power is turned off and
turned on again.
28
DIN SIZE TIMERS COMMON OPTIONS
Note: The socket’s numbering system matches that of the timer terminals.
TERMINAL SOCKETS (Unit: mm inch, Tolerance: ±1 ±.039)
SOCKETS (Unit: mm inch, Tolerance: ±1 ±.039)
Type
LT4H
LT4H-W
(8-pin type)
LT4H
LT4H-W
(11-pin type)
Appearance
• DIN rail socket (8-pin)
ATC18003
Note: Terminal No.
on the main body
are identifical to
those on the termi-
nal socket.
• DIN rail socket (11-pin)
ATC18004
Note: Terminal No.
on the main body
are identifical to
those on the termi-
nal socket.
Dimensions Terminal wiring
(Top view) Mounting hole dimensions
Type
LT4H
LT4H-W
(8-pin type)
LT4H
LT4H-W
(11-pin type)
Appearance
AT7804
• 8P cap
AD8013
ATA4861
Note: The terminal socket’s numbering system matches that of the timer terminals.
Dimensions Terminal wiring
(Top view) Mounting hole dimensions
—
—
—
Terminal screw, M3.5 M.138
5.5
.217
71
2.795
60
2.362
101010 .394.394.394
UP
51 2.008
40 1.575
2– 4.5
2– .177
17.7
.697
25.3
.996
78
3.071
1.6
.063
35.6
1.402
Stopper
(UP terminal)
φφ
UP
34
1.339
17.7
31 1.6
Terminal screw, M3.5 M.138
(UP terminal)
Stopper
101010 .394.394.394
51 2.008
40 1.575
5.5
.217
71
2.795
60
2.362 78
3.071 35.6
1.402
.697
1.220 .063
2– 4.5
2– .177
φφ
87 1 2
56 4 3
4
110
9
1
1 2 3
78 6 5
71
2.795
13
.512
0.2
40±
.008
1.575±
2-M4 2-M.157
±0.1
51
2.008
between the holes which
areparallel drilled.
The minimum distance
(or 4.2 ±0.1
.165
screw holes
dia. holes)
71
2.795
13
.512
0.2
40±
.008
1.575±
2-M4 2-M.157
±0.1
51
2.008
between the holes which
areparallel drilled.
The minimum distance
(or 4.2 ±0.1
.165
screw holes
dia. holes)
51
2.008 71
2.795
25.3
.996
51
2.008 71
2.795
31
1.220
45 1.05.5 18
1.772 .039.217 .709
45
27
1.772
1.063
12 8 7
3456
8
1
7
6
5
4
3
2
10
8
7
1
3
2
11
5
4
6
9
8.6
.339
32.5
1.280
31.5
1.240
8
.315
(34.6)
(1.362)
26
1.024
3014 1.181.551
φ
φ
φ
φφ
φφ
φ
26
8.6
.339
8
.315
(34.6)
(1.362)
1.024
32.5
1.280
31.5
1.240
3014 1.181.551
φ
φ
φ
φφ
φφ
φ
45 1.772 45
1.772
23.5
.925
31.6
1.244
φ
φ
30
1.181
φ
φ
34.6
1.362
31.6
1.244
φ
φ
30
1.181
φ
φ
34.6
1.362
• 11P cap
• Rear terminal socket
29
Mounting parts
ACCESSORIES
LT4H series
• Panel cover (Black)
• Rubber gasket
• Mounting rails (Applicable for
DIN and IEC standards)
• Mounting frame
• Fastening plate
Applicable for PM4H
and LT4H series
LT4H LT4H-W
ATL58011
The black panel cover is also available so that you can change the
appearance of the panel by changing the panel cover. The color of the
standard panel cover is ash gray.
ATL68011
Applicable for PM4H
and LT4H series
For holding DIN rails
The rubber gasket is enclosed in the PM4H
(screw terminal type) and the LT4H series.
The rubber gasket is enclosed
in the PM4H (screw terminal
type) and the LT4H series.
ATA4806
50.0
1.969
50.0
1.969
1.0
.039
48
1.890
4
.157
26
1.024
48 1.890
68 2.677
Oval hole, 40-5.5x15 40-.217x.591
10
.217
5.5
155
27
1.063
2435 .9451.378
7.5
.295
1.5
.059
15
TSUSHITA
2.75R .108R
1,000
MATSUSHITA
15
±139.37±.039
15
.591.591.591.394 .394 .197.197 .591
10
5
ATA4806
UP
12
.472
50
1.969
M4
M.157
10
10
.394
.394
DOWN
RESET
LOCK
UP
TIMERLT4H
SET/LOCK
RESET
DOWN
UP
TIMERLT4H-W
ATC18002
ATA48011
Length: 1 m
aluminum
ATA4811