2
Part name and functions
⑪
⑫
⑬
①
②
③ ④ ⑤ ⑥ ⑦
⑭
⑧
⑨
⑩
⑪
⑫
①
②
③ ④ ⑤ ⑥ ⑦
⑭
LT4S
INHIBIT
START
RESET
0 V
1
3
4
2
12-24 V d.c.
LT4S
INHIBIT
START
RESET
0 V
1
3
4
2
12-24 V d.c.
LT4S
RESET
0 V
2
4
START
3
INHIBT
1
● Contactless input
(when the sensor output is NPN open
collector output)
● Contact input
●Contactless input
(when the sensor output is NPN voltage output)
* LT4S model is non-voltage input type (NPN input)
* Each input terminal is not isolated from the power terminal
* When you set CONT to 1c in function setting mode,
OUT1 operates as instantaneous output.
* When you set O-MD to S-D in function setting mode,
OUT1 operates as
output, and OUT2 operates as
output.
Input connection
No
Name
Usage
①
PV display
• displays time value in POND / PINT / SOND / SINT /
SOFD / S.OND / S.INT/ S.ODR operation modes
• displays set value and time value in PFKF / PFKN / TWON /
TWOF / S-D / SFKF / SNFN / SNFF / S.FKN operation modes
• displays setting items in function setting mode
②
SV display
• displays set value in POND / PINT / SOND / SINT /
SOFD / S.OND / S.INT / S.ODR operation modes
• displays set value and time value in PFKF / PFKN / TWON /
TWOF / S-D / SFKF / SNFN / SNFF / S.FKN operation modes
③
MODE KEY
enters and quits function setting mode
(automaticaly saves function set value during termination)
④
SHIFT KEY
enters set value change mode and shifts the set value digits
⑤
DOWN KEY
reduces set value in function setting mode and set value
change mode
⑥
UP KEY
increases set value in function setting mode and set value
change mode
⑦
RESET KEY
initializes time value and output status
⑧
START input indicator
illuminates when external START signal is applied
⑨
INHIBIT input indicator
illuminates when external INHIBIT signal is applied
⑩
RESET input indicator
illuminates when external RESET signal is applied
⑪
LOCK set indicator
illuminates when LOCK is set
⑫
timer operation indicator flashes during timing operation
⑬
O1 output indicator
illuminates during OUT1 output operation
⑭
O2 output indicator
illuminates during OUT2 output operation
In LT4S models, it illuminates during OUT output operation
Dimension and panel cutout
Connection diagram
3.50
5.00
51.20
56.20
14.50
11.10
4
4.60
48.00
4
8.00
●LT4
●LT4 (STAR-DELTA)
●LT4S
sensor
sensor
POWER
(-)
(+)
OUT1
OUT2
POWER
(-)
(+)
POWER
(-)
(+)
OUT
INHIBIT
START
RESET
■LT4
■LT4S
60 min.
60 min.
15
15
45
45
+0.6
-0.0
+0.6 -0.0
● Dimension
[Unit :㎜]
● Panel cutout
