550 556 04

 

PD 681 Operator Interface

 

General Information

The PD 681 is a P‑NET slave module, which has been designed as a general-purpose ope­rator input and display module. Other P-NET devices, such as Controllers, Distributed Pro­cess Intelligence modules (DPIs), and PCs can write to the display and read any inputs from the keyboard. The front face of the Operator Interface is completely sealed (IP65), and is therefore suitable for use in any industrial environment. The compact design and outstanding environmental characteristics make it highly suitable as a means for local operator interven­tion in machine, process control and mobile applications.

 

Features

·           Sealed Construction

·           28 Key Membrane click-switch Keyboard

·           Backlit Graphics LCD Display

·           User definable overlay

·           Two keyboard mounted LED indicators

·           Acoustic Alarm

·           P-NET communication via 4 wire P-NET and Light-Link

·           Low power consumption

·           Digital I/O channel

 

Display

The display is a fast graphics LCD (33 by 200 pixels) using Supertwist technology, providing a wide viewing angle. For displaying characters, the display can be configured for two or four lines, over a viewing area of 120 mm * 19.2 mm. An LED backlight is incorporated, and the display is covered by non-reflecting glass.

 


Keyboard

The keyboard consists of a membrane click-switch foil, having metal domes. It has 28 avail­able keys. Key functions depend entirely upon the type of application, and may be defined by the user program running in a controller, DPI or PC. The unique design includes a self-adhe­sive keyboard overlay, which offers the ability to customize the unit, in order to provide the ideal operator/instrumentation interface.

 

Audio/Visual Indicators

The PD 681 has two keyboard mounted LEDs and a built in beeper, which can all be used to indicate events requiring operator intervention. The indicators can be controlled via P‑NET.

 

Digital I/O

The unit is provided with one digital I/O for connection to an external signal.

 

Communication Interfaces

The PD 681 is equipped with a P-NET interface, enabling connection to the electrical RS 485/ 4-Wire P-NET or the optical Light-Link P-NET. Signals on either port type are reflected simultaneously on the other. Connection via Light-Link (e.g. from an M36 cluster), requires the unit to be separately powered. Connection via RS485/4-Wire (from a cluster or another part of the system) uses the available conductors to provide power.

 

PD 681 Block Schematic

 

 

 

Wiring Diagram

 

 

 

Channel Structure

The PD 681 consists of 3 channels as shown in the table view.

 

Channel No.

Channel Name

Channel Description

0

Service

General module settings and info.

1

Display

Interface with Display/Keyboard

2

Digital_IO

External I/O

 

 

Electrical Specifications

Power supply

 

 

Power supply DC:         

Nom.

min.

max.

24.0 V

18.0 V

32.0 V

Ripple:

max.

5%

 

 

 

Power consumption @ 24Vdc

Max.

1.5 W

 

 

 

Digital Input

 

 

Input voltage at ON:

3 V

Input voltage at OFF:

9 V

Input hysteresis:  

min.

0.3 V

Input current at ON:

max.

3.4 mA

Input frequency:

max.

200 Hz

 

 

 

Digital Output

 

 

Load current at ON (Sink only)

max.

80 mA

 

Mechanical Details

Temperature

 

 

Operating temperature

-25 °C - 70 °C

Storage temperature

-40 °C - 85 °C

 

 

 

Humidity

 

 

Relative humidity:

max.  95%

 

 

 

EMC

 

 

EN 61000-6-2, EN 61000-6-3

 

 

 

 

 

Vibration

 

 

Test method: IEC 60068-2-6

 

 

Frequency range:

2-100 Hz

Frequency / amplitude:

2-10 Hz :     +/- 5.0 mm

 

10-100 Hz:  +/- 2g

Sweep rate:         

max. 1 octave/min

Number of axes:

3 mutually perpendicular

 

 

Sealing

 

IP65 @ front panel mounting

 

Housing

 

Black NORYL GFN

 

Dimensions: (in mm):

 

 

 

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Ordering Information