instruction manual apu hard alarm output contacts · introduction instruction manual apu hard alarm...

Instruction manual APUHard alarm output contacts

Instruction manual APU Hard alarm output contacts Page 1

Instruction manual APU Hard alarm output contacts

January 2010

Part no.: 4416.579

Rev. 3

Enraf BV

PO Box 812

2600 AV Delft

Netherlands

Tel. : +31 15 2701 100

Fax : +31 15 2701 111

E-mail : [email protected]

Website : http://www.honeywellenraf.com

Copyright 1995 - 2010 Enraf BV All rights reserved.

Reproduction in any form without the prior consent of Enraf BV is not allowed. This manual is for information

only. The contents, descriptions and specifications are subject to change without notice. Enraf BV accepts no

responsibility for any errors that may appear in this manual.

The warranty terms and conditions applicable in the country of purchase in respect to Enraf BV products are

available from the supplier. Please retain them with your proof of purchase.

Preface


Preface

This manual is intended for the technicians involved in the commissioning and service of the Enraf series

873 SmartRadar option hardware alarm contacts.

A description preceding the technical procedures gives the technical information necessary to understand its

functioning. It is recommended to read this chapter prior to performing any of the procedures.

For commissioning and installation of the 873 SmartRadar, please refer to the Instruction manual

873 SmartRadar and Installation guides of the 873 SmartRadar Control Unit & Antenna Unit.

Refer also to the list of related documents in the Appendix.

Safety and prevention of damage

Refer to the chapter Safety in the Instruction manual of the 873 SmartRadar for the safety aspects of the

instrument and for personal safety and the safety conventions.

Legal aspects

The commissioning of and troubleshooting to the instrument may only be conducted by qualified engineers,

trained by Enraf and with knowledge of safety regulations for working in hazardous areas.

The information in this manual is the copyright property of Enraf BV, Netherlands.

Enraf BV disclaims any responsibility for personal injury or damage to equipment caused by:

· Deviation from any of the prescribed procedures;

· Execution of activities that are not prescribed;

· Neglect of the safety regulations for handling tools and use of electricity.

Additional information

Please do not hesitate to contact Enraf or its representative if you require any additional information.

Table of contents

Page 4

Table of contents

Preface........................................................................................................................................................3

1 Introduction .................................................................................................................................................5

2 Commissioning............................................................................................................................................6

2.1 Changing contact wiring from NC to NO ............................................................................................6

2.2 Control setting for relay output contacts.............................................................................................7

3 Operation ....................................................................................................................................................8

4 Troubleshooting ..........................................................................................................................................9

Appendix Related documents ................................................................................................................10

Index .........................................................................................................................................................11

Introduction


1 Introduction

The Enraf 873 SmartRadar is a radar based level gauge.

It is designed to measure accurately and reliable the product level

in large storage tanks.

One of the optional functions in the SmartRadar is the hard alarm

output contacts.

The APU board is then equipped with two alarm relays. The alarm

relays can be used as level alarm output or as digital output.

The relays are of the SPDT type and are standard wired as

normally closed (NC). If the normally open (NO) contact is required, the wiring at the APU board has to be

changed from NC to NO (refer to figure 1.1).

Operation of the relays

· Relays as hard alarm output contact:

Both relays can be linked to one of the four level alarms (HA, HH, LA, LL) which can be

programmed in the 873 SmartRadar.

For instance, relay 1 (RL1, contacts at terminal 5 and 6) operates on the high high level

alarm setting (item HH). The linking is realised by software (item settings). The action on

alarm condition (energized or de-energized) can also be obtained via software (item setting).

· Relay as digital output:

Another way of operating the relays is "remote controlled". One item controls both relays.

This item has to be issued by the host or via the 847 PET (Portable Enraf Terminal).

Commissioning

Page 6

2 Commissioning

For information how to program items, refer to the instruction manual 873 SmartRadar or to the Instruction

manual 847 Portable Enraf Terminal.

For the connection of the external circuit wiring, refer to the Installation guide 873 SmartRadar Control Unit &

Antenna Unit.

2.1 Changing contact wiring from NC to NO

Refer to figure 2.1. If the alarm contact wiring has to be changed from normally closed to normally open, then

proceed as follows:

1 Switch off supply of the Control Unit;

2 Open cover of electronic compartment;

3 Remove PCB retaining screw and slide locking latch on the XPU 2 board to the right and remove

XPU 2 board;

4 On the APU board, change over the wiring at terminal strips CN2 and CN3 from NC to NO;

5 Replace XPU 2 board, slide locking latch to the left and place PCB retaining screw;

6 Close electronic compartment cover;

7 Apply mains power.

Commissioning


2.2 Control setting for relay output contacts

Item AX needs to be set (checked) for the proper operation of the alarm relays on the APU board.

Item Name Description

W2= Protection level 2 Enter protection level 2

AX.0.1= Relay mode 12 ASCII characters; default setting: ME - - - - - - - - - -.

With this item control settings are given to the relays.

Item AX is an indexed item consisting of two elements:

element 1 for relay 1;

element 2 for relay 2.

The construction of each element is:

Pos.: Description: Selection:

1 Mounted M relays are mounted

- relays are not mounted

2 Energized E normally energized

D normally de-energized

3 Remote control R relay set-up for remote control

(via item RN)

- relay set-up for level alarm

4 General APU failure G relay activated if general APU failure

- relay not activated if general APU failure

5 Level failure F relay activated if level failure

- relay not activated if level failure

6 Blocked B relay activated if level blocked

- relay not activated if level blocked

7 Out of range O relay activated if level out of range

- relay not activated if level out of range

8 Last valid level L relay activated if last valid level

- relay not activated if last valid level

9 Reduced accuracy R relay activated if reduced accuracy

- relay not activated if reduced accuracy

10 Warning W relay activated if warning

- relay not activated if warning

11,12 Alarm HH relay linked to HH level alarm setting

HA relay linked to HA level alarm setting

LA relay linked to LA level alarm setting

LL relay linked to LL level alarm setting

- - relay not linked to one of the level alarm

settings

EX Exit Exit protection level 2.

Note:

Item AX is an indexed item. Therefore, to program relay 1, give: AX.0.1="desired setting" and to program

relay 2, give: AX.1.1="desired setting". To read the relay mode setting of both relays, give: AX.0.2.

Operation

Page 8

3 Operation

The alarm relays can be remotely controlled by the host.

Item RN controls the relays:


RN Relay command 8 ASCII characters: (C1, T1, T2, T3, C2, T4, T5, T6).

C1, T1, T2, T3: for relay output 1;

C2, T4, T5, T6: for relay output 2.

Command / data item; not protected. C1 (C2): Relay 1 (2) command:

A Activate relay 1 (2)

D De-activate relay 1 (2)

K Alarm acknowledge

- Don't change

T1, T2, T3 (T4, T5, T6): Relay 1 (2) time data field:

000 - 999: Time setting in seconds for 'Activate' command

only. If the time field is set to 000, the relay is

continuously activated.

For the other commands, dummy values must

be specified (e.g. RN=K000-000).

The 'Acknowledge' command can only be given when the relay is

programmed for level alarm operation (item AX, pos. 3 set on "-"). The

other commands can only be given as the relay is set for remote control

(item AX, pos. 3 set on "R").

The actual relay status can be checked by data item RX (relay status):


RX Relay status 2 ASCII characters (B0, B1) status information from resp. Relay 1 and

Relay 2. Data item; read only. The characters are the same for relay 1

and 2 and their meaning is: B0 (B1): Relay 1 (2) status:

K Acknowledge alarm

D De-activate relay

A Activate relay

T Relay is active with time-setting

F Relay failure

N Relay is not mounted

Troubleshooting


4 Troubleshooting

The 873 SmartRadar is a self diagnostic instrument. Detected errors can be requested by the host, or by the

847 Portable Enraf Terminal.

Item EE (error APU request; indexed item!) contains three codes for alarm relay malfunction. These are:

18001 Relay 1 failure

18002 Relay 2 failure

18003 Relay 1 and relay 2 failure

Note: The relay status and relay error condition is also signalled on the display of the Control Unit with display

format A and display format B.

Appendix

Page 10

Appendix Related documents

Installation guide 873 SmartRadar Control Unit & Antenna Unit

Installation guide SmartRadar Antennas

Instruction manual 873 SmartRadar

Instruction manual 847 PET

Instruction manual Ensite Service Tool

Item documentation Enraf series 854, 873, 877 & 973 gauges

Index


Index

APU board........................................................5, 6

Error APU request ................................................9

Items

AX ..................................................................7

EE ..................................................................9

RN..................................................................8

RX ..................................................................8

NC ....................................................................5, 6

NO....................................................................5, 6

Normally closed................................................5, 6

Normally open ..................................................5, 6

Relay command....................................................8

Relay mode ..........................................................7

Relay status..........................................................8

Safety ...................................................................3

Notes

Page 12

Honeywell Enraf

Delftechpark 39

2628 XJ Delft

The Netherlands

Tel: +31 (0)15-2701 100

Email: [email protected]

www.honeywellenraf.com

4416579 - Revision 3January 2010© 2009 Honeywell International Inc.

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