Dot-x SERIES Dokumentacja Pobierz pdf (Strona 22)

DOTX-45 Dissolved Oxygen System Part 5 – Sensor Assembly

DOTX-45 21 -

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 DOTX-45, 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 4-4 Relay Contacts

4.4 Sensor Wiring

The sensor cable can be quickly connected to the DOTX-45 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.

4.5 Direct Sensor Connection

Sensor connections are made in accordance with Figure 4-1. 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.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 68 69

Brak uwag

Dot-x SERIES Dokumentacja Strona 22