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Page 86 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FCO1
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Communications Installation
Communications Installation
Wiring Guidelines
the RJ-11 cable maximum length is 3 meters
RS-485 maximum length is 1,200 meters (4,000 feet)
use 24 AWG (minimum)
use good quality communication grade (shielded twisted pairs) cable that is
recommended for RS-485 for port 2 (Belden 9842)
run the communication cable separately from power and control cables (do not tie
wrap your RS-232 or RS-485 cable to the power cable or have them in the same
conduit)
use shielded cable and connect to ground at one end only
follow proper grounding guidelines for all devices on the bus
Ports 1 and 2
Ports 1 and 2: RS-232 RJ-11 Jack and RS-485 Locations
The RJ-11 jack and the RS-485 port are inside the enclosure of the unit.
Port Wall Mount
1 RS-232 port (RJ-11 modular telephone jack) is on the motherboard and is
generally used with a laptop computer or modem.
2 Connections for the RS-485 port are on the terminal block.
Note: Improper wiring and incorrect choice of cables are the two most common
causes of communication problems.
L2/N L1
TB1
TB3
TB2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
RELAY 5
RELAY 6
2
1
mA INPUT
SHIELD
SYNC
1
2
4 - 20 mA
OUTPUTS
TS-3
SHIELD
1
2
DISCRETE
INPUTS
RS485
B
A
COM
RJ-11 Jack
RS-485 Port
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