Hydronix Ethernet Adapter, Руководство пользователя

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Chapter 2 Connecting with Sensors
Hydronix Ethernet Adapter User Guide HD0333 Rev 2.1.0 17
Figure 4: Maximum number of sensor connections dependent upon ambient temperature
NOTE: Operation above these limits may cause premature failure of the unit.
1.2.2 Location of the Power Injector Module (EPI01)
The Power Injector Module (EPI01) should ideally be located in the computer room or
network cabinet close to the router. Identify which drop cable runs to the sensor location,
and using a short patch cable insert the Power Injector into that cable, connecting the port
labelled IN to the router output and the port labelled OUT to the drop cable. Connect a
240V or 110V mains supply to the Power Injector.
Note: The Power Injector Module can supply sufficient power for up to three Hydronix
sensors (or 4 Hydro-Probe II sensors). If more sensors are to be connected to the network,
then a separate power supply local to the sensors should be used instead of the Power
over Ethernet solution.
2 Connections
2.1
Wiring Connections
2.1.1 Ethernet Adapter sensor connections:
Ethernet Adapter Terminal
Signal
Description
MIL Spec pin
number on sensor
Wire Colour in
standard Hydronix
0090A cable
1 24V + input
2 0V input
3 24V + to sensor A Red
4 0V to sensor B Black
5 RS485 B G Black
6 RS485 A F White
The white and black are from one twisted pair and the red and black from another.
HydroProbe II
0
1
2
3
4
5
0 10 20 30 40 50 60 70 80
Maxim um Air Tem perature
N
u
m
b
e
r o
f S
e
n
s
o
rs