Matrix-orbital LK202-25 Legacy Bedienungsanleitung PDF herunterladen (Seite 8)

LK202-25 rev 3 8

2. Connections

2.1 Connector Pinout

Refer to the diagram below for this chapter.

Keypad

Connector

Power

connector

General

Purpose

Outputs

RS-232

pin 1

+5 gnd

pin 1

pin 5

Figure 2-1 Electrical Connections

The LK202-25 has four connectors:

Connector Function

14 pin dual header General purpose outputs (6) (see section 2.2)

4 pin power (5.0 VDC) and I

C communications (see section 2.1.1)

10 pin header Keypad (see section 3.4.12)

DB-9F RS-232/power (see section 2.1.1.1)

2.1.1 Power and I

C Connections

Power is applied via pins 1 and 4 as shown in Figure 2-1. Power requirement is +5 VDC ±0.25V. Power

may also be supplied via the RS-232 connector as described in the next section.

Warning:

§ Do not apply any power with reversed polarization.

§ Do not apply any voltage other than the specified voltage.

§ Do not use any cables other than the cables supplied by Matrix Orbital,

unless you are aware of the modifications required.

Connector pinout is as follows:

1 2 3 4

Figure 2-2 Power connector

Pin 1 +5.0 VDC (+7 to +15 VDC with wide voltage option)

Pin 2 SCL (I

C clock)

Pin 3 SDA (I

C data)

Pin 4 Ground

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 36 37

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Matrix-orbital LK202-25 Legacy Bedienungsanleitung Seite 8