Geokon GeoNet 8900 Series Quick Start Manual page 6

RS-485
FIGURE 4: Terminal Connections
To prevent a short circuit, do not allow bare leads to touch each other during or after wiring.
RS-485 (Addressable Node)
Position Color Description
485+ WHITE RS-485 Data +
485− GREEN RS-485 Data −
12V RED 12 Volt Bus
GND BLACK Bus Ground
SHD BARE Analog Ground (shield)
TABLE 3: Node Wiring
2.2.2 MAKING 10-PIN CABLE CONNECTIONS
To connect a device using a 10-pin connection:
1. Remove the cover from the 10-pin connector.
2. Align the grooves on the sensor connector (male), with the connector on the Node (female).
3. Push the connector into place and twist the outer ring of the male connector until it locks.
2.2.3 NOTES CONCERNING MULTI-CHANNEL AND ADDRESSABLE NODES
■
For ease of wiring, sensor cables should be inserted into the cable glands on Multi-Channel
Nodes from left to right
■
Sensors should be wired into the channels of a Node in sequence starting with channel 1
■
Do not wire sensors into the '
■
Multi-Channel Nodes and Addressable Nodes stop trying to read an empty channel after
two attempts. The node will read all channels at the top of every hour; it will resume
sampling when it detects a sensor.
2.2.4 SEAL THE NODES
Seal the Nodes using the instructions in Section 1.2.3 above.
Important! Make sure the cover seals tightly and evenly.
WARNING: Single channel enclosure lids are square but are not symmetrical. They are
specifically oriented; improper installation could strip the threads and/or allow moisture to enter
the enclosure.
2.2.5 RECORD NODE AND SENSOR SERIAL NUMBERS
Record the serial numbers of the Nodes and of the sensors attached to the Nodes.
For Multi-Channel Nodes, also note the channel to which each sensor has been connected.
MODEL 8900 SERIES GEONET WIRELESS DATA HOSTING SYSTEM | QUICK START GUIDE | 6
Vibrating Wire
Position Color
VW+ RED
VW− BLACK
TH+ WHITE
TH− GREEN
SHD BARE
' and ' ' terminal blocks on a Multi-Channel Node.
485 IN 485 OUT
Vibrating Wire MCN
VW Single/Multi-Channel Node
Description
Vibrating Wire +
Vibrating Wire −
Thermistor +
Thermistor −
Analog Ground (shield)
4:
3: