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Operation and Installation Manual

2013 Cervis, Inc.

20.0 IN4D Option

20.1 Description

The IN4D card provides a four (4) digital input interface when connected to the TM70 receiver.

The card is connected as a single-card using the receiver P16 connector. The IN4D can also be

used as a multi-digital input card using the INCAN option as an alternative.

The IN4D is a four digital-to-analog signal converter. Each of the four digital signals — IN1, IN2,

IN3, and IN4 — are converted to a 0 – 3V analog signal. See Figure 38.

Digital inputs IN1, IN2, IN3, and IN4 use the following voltages with reference to Connector 13,

Pin 6 (GND):

• 0 to 4V = deactivated 0 logic state

• 8 to 28V = activated 1 logic state

Figure 38. IN4D Digital-to-Analog Card Connector 13, Pins 1 through 6

CAUTION

Do not apply voltages greater than 28V. Input voltages greater

than 28V will damage the IN4D card.

The IN4D can provide a voltage of 12 to 20volts that can be used directly from Connector 13:Pin

1 as shown in .

Figure 39. IN4D 12 to 20V Voltage Source

+VI

IN1

IN2

IN3

IN4

GND

IN4D

+VI

IN1

IN2

IN3

IN4

GND

IN4D

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Cervis TM70 Installationshandbuch Seite 69