Endress+Hauser ZAD 423 Manuale utente

Controller

ZAD 423

for Silopilot FMM

Operating Instructions

BA 161F/00/en/09.97

Software version 1.0

Part No. 017273-1000

Hauser+Endress

Nothing beats know-how

Quick Guide

Basic calibration

Step Calibration

field H Entry ●+

●–

❍H

❍S

Example Remarks

Set counting interval

1❍+

❍–

●H8

❍S

Number

corresponding

to counting

step of

connected

Silopilot FMM

0= 1dm

1= 5cm

2= 1cm

3= 1in

4 = 1/10 ft

0 = counting

step

1dm

For counting step

see nameplate

Silopilot FMM

"Zähleinheit" or

"Zählung (unit)"

Empty calibration

2❍+

❍–

●H1

❍S

Height E

from flange to

zero point of

measurement

(empty silo)

in m

for steps of

1cm

5cm

1dm

in in

for steps of

1in

in ft

for steps of

1/10 ft

18.7 (m)

Full calibration

3❍+

❍–

●H2

❍S

Height F

from

zero point of

measurement

(empty silo)

to maximum

height

in m

for step of

1cm

5cm

1dm

in in

for step of

1in

in ft

for step of

1/10 ft

17.2 (m)

For display:

4❍+

❍–

●H0

❍S

LEVEL

40.0

##.#

Reset

measured value

5❍

❍

●Press Pushbutton S min. 3 s

Silopilot starts

measurement

Wait for Silopilot

sensing weight to descend 12.3 Level

is shown

100 %

Quick guide ZAD 423

Table of Contents

1 Software changes . . . . . . . . 2

2 Notes on Safety . . . . . . . . . 3

2.1 General information . . . . . . . . . 3

2.2 Special notes on safety . . . . . . . 4

3 Introduction . . . . . . . . . . 5

3.1 Application . . . . . . . . . . . . 5

3.2 Measuring system . . . . . . . . . 5

3.3 Operating principle . . . . . . . . . 6

4 Installation . . . . . . . . . . . 7

4.1 Planning . . . . . . . . . . . . . 7

4.2 Mounting . . . . . . . . . . . . . 8

5 Electrical Connection . . . . . . 9

5.1 Connecting the Silopilot FMM to

the ZAD 423 Controller . . . . . . . . 10

5.2 Disabling the start-up line (Stop) . . . . 10

5.3 Analogue output signal, current output . 11

5.4 Test output . . . . . . . . . . . . 11

5.5 Limit signal output . . . . . . . . . 11

5.6 Power supply . . . . . . . . . . . 11

6 Start-Up . . . . . . . . . . . 13

6.1 Initial procedures . . . . . . . . . . 13

6.2 General information on settings . . . . 13

6.3 Basic settings . . . . . . . . . . . 16

6.4 Silopilot design . . . . . . . . . . . 18

6.5 Analogue output signal . . . . . . . . 19

6.6 Limit signals . . . . . . . . . . . . 20

6.7 Time switch (Timer) . . . . . . . . . 23

6.8 Display of the measured value . . . . . 24

7 Maintenance . . . . . . . . . 25

8 Trouble-shooting, repairs . . . . 25

8.1 Trouble-shooting table . . . . . . . . 25

8.2 Spare parts . . . . . . . . . . . . 26

8.3 Replacing parts . . . . . . . . . . 26

8.4 Checking . . . . . . . . . . . . . 28

8.5 Returning for repair . . . . . . . . . 29

8.6 Disposal . . . . . . . . . . . . . 29

9 Technical Data . . . . . . . . 31

10 Index . . . . . . . . . . . . 33

ZAD 423 Table of Contents

Endress+Hauser 1

1 Software changes

Version, Date Revisions Changes

1.0 04.04.1997 new

1 Software changes ZAD 423

2 Endress+Hauser

2 Notes on Safety

2.1 General information

In order to highlight safety-relevant or alternative operating procedures in the manual,

the following conventions have been used, each indicated by a corresponding icon.

Icons for

notes on safety

Explosion protection

Electrical symbols

Icon Significance

Note!

A note highlights actions or procedures which, if not performed correctly,

may indirectly affect operation or may lead to an instrument response

which is not planned.

Caution!

Caution highlights actions or procedures which, if not performed correctly,

may lead to personal injury or incorrect functioning of the instrument.

Warning!

A warning highlights actions or procedures which, if not performed correctly,

will lead to serious personal injury, a safety hazard or destruction of the instrument.

Device certified for use in explosion hazardous area

If the device has this symbol embossed on its nameplate it can be installed in an explosion

hazardous area.

Explosion hazardous area

Symbol used in drawings in these operating instructions to indicate explosion hazardous

areas.

— Devices located in and wiring entering explosion hazardous areas must conform with

the stated type of protection.

Safe area (non-explosion hazardous area)

Symbol used in drawings in these operating instructions to indicate non-explosion

hazardous areas.

— Devices located in safe areas still require a certificate if their outputs run into

explosion hazardous areas.

Direct voltage

A terminal to which or from which a direct current or voltage may be applied or supplied.

Alternating voltage

A terminal to which or from which an alternating (sine-wave) current or voltage may be

applied or supplied.

Grounded terminal

A grounded terminal, which as far as the operator is concerned, is already grounded

by means of an earth grounding system.

Protective grounding

A terminal which must be connected to earth ground prior to making any other connection

to the equipment.

Equipotential connection

A connection must be made to the plant grounding system which may be of type

e.g. equipotential line or neutral star according to national or company practice.

Note!

Caution!

Warning!

ZAD 423 2 Notes on Safety

Endress+Hauser 3

2.2 Special notes on safety

Approved usage The ZAD 423 controller is used to control the Silopilot FMM level measuring device,

to show level on the digital display, to convert the level into an analogue output signal

and to supply limit signals.

The electrical components are specifically designed for this application.

Installation,

commissioning,

operation

The controller has been designed to operate safely in accordance with current

technical and safety and EU standards. If installed incorrectly or used for applications

for which it is not intended, however, it is possible that application-related dangers

may arise, e.g. product overflow or damage to the Silopilot due to incorrect calibration.

For this reason, the instrument must be installed, connected, commissioned,

operated, maintained and repaired according to the instructions in this manual.

Personnel must be authorised and suitably qualified. Modifications or repairs to the

equipment which are not expressly approved in this manual or by the bodies

responsible for compliance may void the user's authority to operate the equipment.

Explosion hazardous

areas All local standards must be complied with when using the Silopilot in explosion

hazardous areas.

•Ensure that all personnel are suitably qualified.

•All technical and safety specifications must be complied with at the measuring point.

2 Notes on Safety ZAD 423

4 Endress+Hauser

3 Introduction

3.1 Application

Controller for level measurement with the Silopilot FMM 760 or FMM 460

electromechanical level sensor:

•Automatic and manual output of start pulses for the Silopilot which can also be

switched off, e.g. during filling

•Digital display of silo level

•Conversion of the digital measured value into a standard analogue output signal

- for remote display of level

or - inverted -

- for remote display of free space between the surface and silo roof

•Output of two limit signals

3.2 Measuring system

The measuring system consists of:

•Silopilot FMM 760 or FMM 460

•Controller ZAD 423 with

- integrated time switch,

- digital display,

- analogue output,

- limit switch

•Connected peripherals, such as

- signalling systems,

- registration units, etc.

Silopilot FMM Power supply

Controller

ZAD 423

Fig.1

Measuring system

ZAD 423 3 Introduction

Endress+Hauser 5

3.3 Operating principle

Start-up The integrated time switch (timer) for automatic start-up of the Silopilot can be

adjusted in ten minute intervals, ranging from every 10 minutes to 24 hours.

The timer can also be switched off, e.g. during filling, to prevent the sensor weight

from being buried.

The Silopilot can also be started manually from the ZAD 423 controller.

Level measurement The controller is set to the units of distance (= counting steps) with which the Silopilot

measures the distance to the surface of the solid (e.g. cm, dm , in, 1/10 ft).

The controller receives a reset pulse from the Silopilot every time measurement begins.

It then counts the number of pulses transmitted by the Silopilot. At the end of the

measurement cycle, the level in the silo is shown on the digital display of the ZAD 423

controller in the units required (e.g. m, in, ft).

Output signal The analogue signal (0/4 ... 20 mA) is derived from the digital measurement signal

at the end of the measurement cycle. It can be inverted and set to indicate either the

level of material or the free space remaining in the silo.

On a fault, the output signal can be selected to

- fall to –10 % (MIN. = –2 mA / +2,4 mA),

- rise to 110 % (MAX. = 22 mA),

- remain unchanged (HOLD).

Limit signals The integrated relay with potential-free changeover contact can be set to energise

when a freely selectable height has been reached and to de-energise at another

(two-point control) or else to switch at a limit point.

The relay switching status is shown by an LED.

The relay de-energises on a fault (power failure, defective cable, breakdown of

Silopilot).

3 Introduction ZAD 423

6 Endress+Hauser

4 Installation

4.1 Planning

The ZAD 423 controller must be installed in a control room or else in a protective

housing. (This must be outside the explosion hazardous area if the Silopilot FMM is

used in a dust explosion hazardous area.)

The instrument is in Minipac form for single or row-mounting on a symmetrical rail

to EN 50022-35x7.5 or EN 50022-35x15.

A protective housing with ingress protection IP 55 is available for mounting in the

open; see accessories.

Note the permissible ambient temperature, which is dependent on the type of

mounting.

Avoid aggressive atmospheres and excessive humidity which can cause corrosion

to contacts or condensation on the printed circuit board.

See dimensional sketch for dimensions and minimum intervals.

min. 25 mm

100 mm 111 mm

2 mm 75 mm

113 mm (121 mm)

Standard rail EN 50022-35x7.5 / (35x15)

37.5 mm

Fig.2

Dimensional drawing

and

minimum distance between

two rows of instruments

Dimensions in mm

100 mm = 3.94 in

ZAD 423 4 Installation

Endress+Hauser 7

4.2 Mounting

Instrument identification Before installing, check to see if you have the correct instrument.

Information about the product is given on the nameplate.

Compare the product designation with that given in the product structure.

Mounting

on the standard rail See Fig. below

For disposing of packaging see Section 8.6 "Disposal".

ZAD 423 Controller

Certificates, Approvals

A Standard - without special certificate

Y Other

Version

0 Minipac housing 100 mm, with terminal strips

9 Other

Power Supply

A 180 V ... 253 V, 50/60 Hz

B 90 V ... 140 V, 50/60 Hz

C 38 V ... 53 V, 50/60 Hz

D 21 V ... 28 V, 50/60 Hz

Y Other

Product designation

ZAD 423-

Fig. 3

Product structure

Fig.4

Mounting

1.place against standard rail

2.tilt front downwards

and clip in at back

4 Installation ZAD 423

8 Endress+Hauser

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