h1246 ARCONg.pdf

Building Automation

Industrial Automation

Systems

Hardware

ARCON ®

Arc-Fault Protection System

04/02 AWB46-1246GB

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All brand and product names are trademarks or registered

trademarks of the owner concerned.

1st published 1996, edition 01/96

2nd published 1997, edition 09/97

3rd published 1998, edition 11/98

4th published 1999, edition 04/99

5th published 2002, edition 04/02

Author: Dirk Ehlen

Editor: Thomas Reitz, Barbara Petrick

Translator: David Long, Bonn

No part of this manual may be reproduced in any form

(printed, photocopy, microfilm or any otherprocess) or processed,

duplicated or distributed by means of electronic systems without

written permission of Moeller GmbH, Bonn.

Subject to alterations without notice.

Printed on bleached cellulose. 100 % free from chlorine and acid

Warning!

Dangerous electrical voltage!

Before commencing the installation

• Disconnect the power supply of the device.

• Ensure a reliable electrical isolation of the low voltage for the

24 volt supply. Only power supplies which conform to the

stipulations of IEC 60364-4-41 or HD 384.4.41 S2 (VDE 0100

Part 410) may be used.

• Ensure that devices cannot be accidentally restarted.

• Verify isolation from the supply.

• Earth and short circuit.

• Deviations of the mains voltage from the rated value must not

exceed the tolerance limits given in the specifications,

otherwise this may cause malfunction and dangerous

operation.

• Cover or enclose neighbouring units that are live.

• Follow the engineering instructions (AWA) of the device

concerned.

• Emergency stop devices complying with IEC/EN 60204-1 must

be effective in all operating modes of the automation devices.

Unlocking the Emergency-stop devices may not initiate a

restart.

• Only suitably qualified personnel to EN 50110-1/-2

(VDE 0105 Part 100) may work on this device/system.

• Before installation and before touching the device ensure that

you are free of electrostatic charge.

• Devices that are designed for mounting in housings or control

cabinets must only be operated and controlled after they have

been installed with the housing closed. Desktop or portable

units must only be operated and controlled in enclosed

housings.

• The functional earth (FE) must be connected to the protective

earth (PE) or the potential equalization. The installing

electrician is responsible for the implementation of this

connection.

• Connecting cables and signal lines should be installed so that

inductive or capacitive interference do not impair the

automation functions.

• Measures should be taken to ensure the proper restart of

programs interrupted after a voltage dip or failure. This should

not cause dangerous operating states even for a short time. If

necessary, emergency-stop devices should be implemented.

• Install automation devices and related operating elements in

such a way that they are well protected against unintentional

operation.

• Suitable external measures must be implemented at locations

where faults in automation devices can cause injury to

personnel or material damage to assets . These measures must

guarantee or force safe operating conditions during a fault

(e.g. by the use of independant limit monitors, mechanical

interlocks, etc.).

• Suitable safety hardware and software measures should be

implemented for the I/O interface so that a line or wire

breakage on the signal side does not result in undefined states

in the automation devices.

Procedure before restart

Fault handling

If a system shut-down due to an arc-fault is indicated, proceed in

the following manner:

Fault indication

X Document the states of the master units (LEDs, 7 segment

displays), the slave units and the quenching devices. Use the

“System Status” form for this purpose (Copy master

a “Appendix“, Page 39).

X Refer to the power distribution system documentation for the

installlation location of the slave unit (ARC-EL3 or ARC-EP10)

with the displayed address and the place of installation of the

displayed sensor.

X If you are using ARCON with a quenching device (ARC-AT-..),

identify the installation location of the actuated quenching

device in the project documentation of the power distribution

system.

X Remove the actuated quenching device (ARC-AT-..), as

described in the AWA4600-1972 installation instructions.

X Perform an insulation resistance measurement test:

In Germany, this test must be performed conform to

DIN VDE 0105, Part 100 (Operation of electrical installations).

The results tell you whether it is necessary to perform cleaning

operations.

If the insulation resistance measurement test is successful,

ignore the next step.

The self-monitoring feature which is implemented in the ARCON

arc fault protection and detection system continuously monitors

the functions of all modules and system components.

If a defective module or sensor is detected by the system, an alarm

signal is generated by the master unit via the self-monitoring

relays SF1 (break contact, X1: 17, 18) and SF2 (make contact, X1:

19, 20). The fault is displayed on the master unit by an LED and a

fault signal is generated.

The last three fault signal messages are stored in the fault memory

for safety reasons. The last fault which has occured is displayed

first on the display.

Proceed as follows to display the fault messages:

X Select the “ERROR” operating mode with the DC arrow keys.

The message for the last fault appears on the display.

Note the fault message before you change the display.

After you have changed the display, it is no longer

possible to determine which fault was displayed first on

the display.

Note!

Avoid short-circuiting the L1 to L3 conductors during the

insulation resistance measurement test if possible.

X Use the YX arrow keys in order to view the fault messages for

the same fault or other faults.

X Rectify the cause of the fault and, if necessary, clean the point

of the fault. Proceed in accordance with the generally accepted

rules of electrical engineering.

X Reset the master unit as described in Section “Messages and

alarms with an arc-fault related shut-down”, Page 17. The

LEDs, displays and relay contacts return to the operational

state. If ARCON is used without a quenching device

(ARC-AT-..), ignore the next step.

X Install an untripped quenching device (ARC-AT-..).

Replacement devices are available from Moeller. Proceed as

described in the installation instructions AWA4600-1972.

With faults which are related to modules or sensors, the address

of the slave unit or quenching device (Zone 1 or Zone 2) is

displayed on the left of the display and the self-monitoring code is

displayed on the right of the display.

With general faults or faults on the master unit, only the self-

monitoring code is displayed on the right of the display.

Note!

If you do not have an untripped quenching device

(ARC-AT-..) and are unable to wait for the Moeller

Service, it is possible to continue operating the system

without a quenching device.

It should be noted however, that this possibility does not

provide the highest protection for your switchboard

system. If there is a further arc fault, the arc will be

quenched by the circuit-breaker. The resulting damage to

the switchboard system may then be far more serious.

X Undertake a further documented insulation resistance

measurement test (DIN VDE 0105, Part 100 “Operation of

electrical installations”).

X Do not restore voltage to the disconnected part of the

switchboard system until the insulation resistance

measurement is successful.

III

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