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DR4300 Circular Chart Recorder
DR4300 Circular Chart Recorder Product Manual 12/03
38
Insulation of output wires
The insulation of wires connected to the relay output terminals shall be rated for the highest voltage
involved. Extra Low Voltage (ELV) wiring (input, current output, and low voltage control/alarm circuits)
shall be separated from HAZARDOUS LIVE (>30 Vac, 42.4 Vpeak or 60 Vdc) wiring per Table 2-6.
Procedure
Follow the procedure in Table 2-13 to wire the discrete outputs.
Refer to Figure 2-14 for wiring electromechanical and solid state relays.
Refer to Figure 2-15 for wiring open collector outputs.
Refer to Table 2-12 to see the output function of each terminal with the available output algorithms and
options.
Table 2-13 Relay Output Wiring - 1 or 2 Pen Models
Step Action
ATTENTION To avoid damaging the recorder, be sure that you install the power wires into the
correct screw terminals as shown in Figure 2-9 and Figure 2-10.
1
Turn off the power to the recorder.
2
Open the recorder door. Loosen the captive screw in the chart plate and swing the plate out.
3
Locate terminal blocks TB3* and TB4* on the bottom right edge of the printed circuit assembly
(PCA) for pen 1 or pen 2.
4
Run the output wires through the appropriate conduit hole (see Figure 2-7 and Figure 2-8). DO
NOT bundle them with input wires.
5
Strip 1/4-inch maximum of insulation from the end of each wire and form end to fit under a
screw connection.
6
Insert the wires under the appropriate screws for the applicable relay output as shown in the
figures. Tighten the screws to secure the wires.
*TB3 is output 2.
TB4 is output 1.