LEAKAGE LOCATION DETECTOR
Buzzer Stop
Reset
Leak Point
AD-AS-1LDMA
Communication speed terminal setting switch
S
RS485
S
RS485
For maintenance use
(Do not use them.)
Modbus address setting switch
(No. 1 to 15)
Power indicator LED
Alarm indicator LED
Maintenance indicator LED
Buzzer stop switch
Alarm cancel switch
LCD
The items to be displayed are as follows:
Modbus address
Sensor length
Water leakage point
Details of the error
Operational setting switch
Connection terminal board (M3)
Sensitivity fine adjustment VR
* This has already been adjusted before shipment.
Do not change the setting.
* Contact operation
Contact a can be changed to Contact b
by adjusting the setting of the operational
setting switch.
(Refer to Attached Drawing 3.)
4-20 mA
output
Sensor
connection
AD-LS
Alarm
contact
(* Contact 1a)
B
ra
id
e
d
w
ir
e
In
s
u
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te
d
w
ir
e
R
e
s
is
ta
n
c
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w
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C
O
M
N
O
Power source
＊ AC24V or DC24V
＋
―
＋
―
G
ro
u
n
d
in
g
c
o
n
n
e
c
ti
o
n
E
＋
―
H
G
F
E
D
C
B
A
8
7
6
5
4
3
2
1
H
G
F
E
D
C
B
A
8
7
6
5
4
3
2
1
Attached Drawing 2
* For Modbus communication use
* Power source
An AC 24 V input has no polarity.
The + and - symbols apply to a DC 24 V input.
Two terminals to which connections are made are
available at each location. Making connections at
one of the locations will activate the system.
Use the other for connection wiring.
*Modbus RS485
Two terminals to which connections are made are
available at each location. Making connections at
one of the locations will activate the system.
Use the other for connection wiring.
mm
-/-
Approved by
N
am
e
Prepared by
Checked by
Scale
Unit
Prepared on
TATSUTA Electric Wire & Cable Co., Ltd.
Revision date
Prepared by
Checked by
Approved by
Reason for revision
Water Leakage
Location Detector
(AD-AS-1 LDMA)
Explanation of
Individual Parts
Length
2014.12.01
In
su
la
te
d
wi
re
B
ra
d
e
d
wi
re
Resista
n
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wi
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