LRWMANUAL 0918
KAM CONTROLS, INC.
10
I N S TA L L AT I O N c o n t i n u e d
POWER (–)
GND
POWER (+)
24-30 VDC
DENSITY IN
From mass flow or densitometer.
GND
4-20 mA (–)
Current output, source powered. Set to requisite percent water at factory.
4-20 mA (+)
DIG OUT (–)
Alarm or relay (digital contact closure / max 50 W)
DIG OUT (+)
RS232
Console port – communication interface for calibration, connection to PLC
RS485
Modbus interface
All wiring and maintenance on the KAM LRW must be done in accordance with regional and classification
requirements. It is the user's responsibility to understand these requirements.
It is also recommended that the LRW be wired with flexible wiring/conduit with additional slack/length in the
wire to accommodate insertion, removal, and testing.
To avoid repeatedly opening electronics enclosure during diagnostics, it is recommended operators permanently
wire an RS232 connection to the instrument with corresponding 9-pin connection at junction box for PC
connection.
Operators should take all possible precautions to avoid any moisture from entering the electronics enclosure.
The enclosure should not be left open in inclement weather or for long periods of time, especially during
operation, as condensation will accumulate. All conduits should be sealed and secured in accordance with re-
gional and classification requirements, and unused 3/4" NPT openings should be sealed with provided plug. Do
not power wash the unit.
If necessary, disconnect LCD connector in order to access wiring terminals. The LRW supplies power for the
loop. Make sure the device that receives data from the LRW does not have a power source of its own switched
on. Also, the LOOP+ and LOOP- are isolated inputs from the chassis/earth. Do not connect either to a common
ground. Use an isolator if necessary.
INPUTS/OUTPUTS/SERIAL
