Honeywell DR4300 manual Digital Inputs Optional, Digital Input Wiring

Installation

2.5.3 Digital Inputs (Optional)

Introduction

If the recorder hardware supports optional digital inputs, the inputs are wired to the terminal block on the digital input board mounted on stand-offs on the printed circuit assembly for the pen channel.

Procedure

Refer to Figure 2-12while following the procedure in Table 2-10to install digital input wiring.

Table 2-10 Digital Input Wiring

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 2-9and Figure 2-10.

1Open the recorder door. Loosen the captive screw in the chart plate and swing the plate out.

2Locate the terminal block, P3D, on the optional digital input printed circuit assembly mounted on stand-offs above the printed circuit assembly (PCA) for the pen channel. The PCA on the right inside the recorder is for pen 1; if there is a second pen, its PCA is on the left. (See Figure 2-12.)

3Run the input wires through the appropriate conduit hole (see Figure 2-7and Figure 2-8). DO NOT bundle them with the power wires.

4Strip 1/4-inch maximum of insulation from the end of each wire and form end to fit under a screw connection.

5Insert the wires under the appropriate screws for the input number (labeled on assembly). Tighten the screws to secure the wires.

6If the recorder has two pens, repeat Steps 2 through 5 to wire the input for the second pen channel.

12/03 DR4300 Circular Chart Recorder Product Manual 33