Fluid-components-international FLT93 Nuclear Manuel d'utilisateur télécharger pdf (Page 17)

FLT

Series FlexSwitch

INSTALLATION

Fluid Components International LLC 17

Wiring Output Signal Terminals

Two output signals are provided on the control circuit at P1. The signal voltage at positions 1 and 2 represents the process change. The

signal voltage at positions 3 and 4 is proportional to the temperature at the sensing element. See Figures 2-5 through 2-7. See also Chapter

3 for the physical layout of the control circuit.

Caution: Do not ground terminal 2 of P1. (Terminal 2 is the negative lead of the process signal.) This terminal is 9 volts above the

control circuit ground. The peripheral using this signal must have a differential input.

These voltages can be used by other peripherals with a minimum load of 100K ohms. The terminal block can be wired with between gauge

26 and 18 wire (22 gauge wire is normally used). The maximum recommended length of wire is 1000 feet. Shielding is required on any

length of cable. The shield must be terminated at position 4 on P1.

Early versions of the FLT93 require a connecting harness that was supplied with each instrument. The harness can be ordered if it is missing.

The FCI part number is 015664-01. Newer versions of the FLT93 require a supplied terminal plug.

Figure 2-7 Auxilliary Relay Board Wiring Diagram

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 57 58

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Fluid-components-international FLT93 Nuclear Manuel d'utilisateur Page 17