ATI
Q45C2 2E Conductivity System
Part 4 – Configuration
O & M Manual
Revision K (01/07)
- 22 -
Two sets of SPDT relay contacts are provided on the power supply board. None
of the relay contacts are powered. The user must supply the proper power to the
contacts. For applications that require the same switched operating voltage as
the Q45 (115 or 230 V), power may be jumpered from the power input terminals
at
TB5.
Relay wiring is connected at
TB3
as shown below. Note that the relay
contact markings are shown in the NORMAL mode. Programming a relay for
“Failsafe” operation reverses the NO and NC positions in this diagram.
Figure 3-4 Relay Contacts (ATI-0712)
3.4 Sensor
Wiring
The sensor cable can be quickly connected to the Q45 terminal
strip by matching the wire colors on the cable to the color
designations on the label in the monitor. A junction box is also
available to provide a break point for long sensor cable runs. Route
signal cable away from AC power lines, adjustable frequency
drives, motors, or other noisy electrical signal lines. Do not run
sensor or signal cables in conduit that contains AC power lines or
motor leads.
3.5
Direct Sensor Connection
Sensor connections are made in accordance with Figure 3-2. The
sensor cable can be routed into the enclosure through one of cord-
grips supplied with the unit. Routing sensor wiring through conduit
is only recommended if a junction box is to be used. Some loose
cable is needed near the installation point so that the sensor can be
inserted and removed easily from the flowcell.
