LEAKAGE LOCATION DETECTOR
Buzzer Stop Reset
Length
Leak Point
AD-AS-1LDM
1
LEAKAGE LOCATION DETECTOR
Buzzer Stop Reset
Length
Leak Point
AD-AS-1LDM
GND
TRー
TR＋
5-5-2 Abnormal Water Leakage Location Data Output
In the case of abnormal water leakage location data output, an indication of “E01” is added on the LED. (Refer
to Attached Drawing 4.)
This may result from the causes described below. Check the facilities.
1) Detector: Wiring and/or connection between external analog input devices are broken.
2)
The input resistance for the external analog input devices is more than 500 Ω.
If there is no problem with the items above, the detector may be out of order. Contact the manufacturer.
5-6 RS485 Communication (Modbus/RTU) Connection
The connection terminal block that communicates with the host system is as follows. (
Refer to Drawing
9)
Drawing 8.
RS485 connection terminal block
+ Terminal: SD / RD + (hot side)
- Terminal: SD / RD + (cold side)
S terminal: GND
Note) Each + terminal and - terminal are internally connected.
To facilitate the connection of multiple units, two pairs of terminals were equipped.
Drawing 9.
RS485 wiring image
-5-
S
RS485
S
RS485
