ATI
Q45C2 2E Conductivity System
Part 4 – Configuration
O & M Manual
Revision K (01/07)
- 20 -
AC powered Q45 systems are supplied with 3 cable gland fittings and two ½”
conduit adapters. One of the cable glands has a larger hole in the rubber gland
and should be used for the power cord entry if a flexible power cord will be used
for installation. One of the cable glands with the smaller gland opening should
normally be used for the sensor cable. Cable glands and conduit hubs will screw
into any of the three threaded holes on the bottom of the enclosure.
Connect HOT, NEUTRAL, and GROUND to the matching designations on
terminal strip
TB5
.
The analog outputs from the system are present at terminals TB1 and TB2. The
loop-load limitation in this configuration is 500 Ohms maximum for each output.
Also note that these two outputs are completely isolated from each other to
insure that ground loops do not result from the connection of both outputs to the
same device such as a PLC or DCS.
In the line-powered unit, a ribbon cable connects the power supply assembly with
the microprocessor assembly located in the front section of the enclosure. This
cable can be removed during installation to facilitate wiring if desired. It is best to
unplug only one end. The ribbon cable has a marking stripe on one edge that is
used to indicate proper orientation. The indicator stripe should be on the bottom
edge of the cable when installed as shown in Figure 3-3.
WARNING
Disconnect line power voltage BEFORE connecting
line power wires to Terminal TB5 of the power supply.
The power supply accepts only standard three-wire
single phase power. The power supply is configured
for 115 VAC or 230 VAC operation at the factory at
time of order, and the power supply is labeled as
such. Do NOT connect voltages other than the
labeled requirement to the input.
