Hach-Lange 3400 sc - Manual (Page 16)

12
Installation
Figure 9: Quick-connect Fitting pin assignment
3.2 Using the Digital Gateway
The digital gateway is designed to provide a digital interface to the controller. The
non-sensor end is wired to the controller as shown in
"Connecting the Sensor to an sc
Controller" on page 11 .
3.2.1 Wiring the sc Sensor to the Digital Gateway
1. Route the cable from the sensor through the strain relief in the digital gateway then
properly terminate the wire ends.
Note: Do not tighten the strain relief until the digital gateway is wired and the two halves are
threaded securely together.
2. Insert the wires as shown in Table 5: "Wiring the Digital Gateway" and Figure 10:
"Wiring and Assembling the Digital Gateway" .
3. Make sure the O-ring is properly installed between the two halves of the digital
gateway and thread the two halves together. Hand tighten.
4. Tighten the strain relief to secure the sensor cable.
5. Connect the digital gateway to the controller.
Number Designation Wire Color
1 +12 VDC Brown
2 Circuit Common Black
3 Data (+) Blue
4 Data (–) White
5 Shield Shield (grey wire in existing quick-disconnect fitting)
6 Groove
1
2
3
4
5
6
Table 5: Wiring the Digital Gateway
Sensor (wire color) Sensor Signal Digital Gateway Sensor Wire connector
Clear Shield J1-1
Clear w/shrink wrap Shield J1-1
Red Drive J1-2
White Temp – J1-3
Blue Temp + J1-4
Black Sense J1-5