Edition 30

Loop Explorer V4.92

The last major release of Loop Explorer was Version 4.90, which was distributed to all registered users during March 2008 and featured in “In The Technical Loop - Issue 25” in April 2008.

Since this release, an interim update of Loop Explorer has been made available, which has the following revisions;

Support for Apollo Discovery Base Sounder Beacon tone selection

A new “Loop Sounder Options” tab has been added to the panel settings options, to allow one of the 13 tones to be allocated against different event types.

Support for Apollo Discovery Base Sounder Beacon global/default volume

In the “Loop Sounder Options” screen, there is also a “default sounder volume” setting, to allow all sounder volumes to be configured globally. If any particular sounder is configured to a volume other than the default volume, then that sounder will be independent from the global setting and will always operate using the configured volume.
NOTE: When transferring a configuration file from a panel with older firmware (that does not support the default sounder volume), the default volume field will not be populated in the Loop Explorer “Loop Sounder Options” screen.
Whenever any panel settings are revised, the Loop Explorer program will check to ensure all settings are configured and are valid, before allowing the revisions to be changed. If changes to the panel settings cannot be saved in the Edit Panel screen, check the default volume is configured and if this is empty, select any of the permitted volume settings from the drop down list, then save the panel settings.

Incorrect type designation of Apollo Loop Sounder / Sounder Beacons

V4.90 has an error in the allocation of loop sounder beacons, which are listed as Intelligent Loop Sounder Beacons. These were then allocating the incorrect type code for these devices. Version 4.92 has these devices correctly listed as Integrated Loop Sounder Beacons.

Incorrect type designation of Hochiki CHQ-WS2 transferred from Auto Configured panels

When a panel is auto configured with CHQ-WS2 devices installed, then the configuration transferred into loop explorer, the CHQ-WS2 device type is incorrectly displayed. Deleting this device and then adding it back as a CHQ-WS2 resolved this problem, but the transfer error is resolved in Loop Explorer V4.92.

Loop Manager Delay Settings

One of the enhancements to Loop Explorer V4.90 is to permit the first and second stage delays to outputs to be configured up to 10 minutes per delay. However this was not implemented in the “Loop Manager” facility. Version 4.92 permits these extended delays to be configured in Loop Manager.

Alarm Contact – Disablement output option information label

When all output attributes are deselected from the panel “Alarm” contact and the output is not in any cause and effects, the Alarm contact will operate under any disablement event. The label giving this information was previously shown when editing the “Fire” contact, which is misleading. This is resolved in V4.92

Please contact any member of Technical Support department if you require and update to this version of Loop Explorer. We will require your contact details and company details in order to validate eligibility for this upgrade before we can issue the CD or e-mail the upgrade files to you.

These issues do not affect Argus Vega protocol panels. The current version of Loop Explorer remains at V4.90 for Argus Vega protocol panels

Supplementary information on Loop Explorer V4.90 is given in Issue 25 of In the Technical Loop and may be downloaded using the following link.

ITTL Edition 25:


24 volt D.C. outputs in Kentec products

A standard feature of panels in the Kentec range is the provision of an Auxiliary 24V output, which is protected by a fuse and is monitored for fuse failure. The Auxiliary 24V output is provided specifically for site installation applications including:
  • Supply of power to beam units
  • Supply of power to interposing (240V switching) relays
  • Supply of power to door holders

When using this power source, care must be taken to ensure that the additional load on this output is accounted for in battery calculations and also to ensure that the load is adequately suppressed (in the case of inductive switched loads). Details of the rating of the output vary with each product and further information is given in the appropriate product manual.

In addition to the Auxiliary 24 volt outputs, the following products also have a separate “24V output”.

  • K3000 series panels (CON05 main controller board)
  • K2.01 series extinguishing panels
  • K4.01 / K401+ extinguishing panels (CON05 main controller board)
  • Syncro AS series panels

In all cases, the “24V output” terminals are ONLY to be used for factory fitted additions to the standard product. Under no circumstances are these outputs to be connected to wires that are external to the panel.

These outputs are not independently fused and therefore excessive current drawn from these outputs may compromise the operation of the control panel and can also lead to damage to the circuit board.


Write enable switch in Kentec products

In order to comply with the requirements of Clause 13.5.3.d of EN54-2, site-specific configuration information is stored in non-volatile memory, which must be protected against changes by a failure in the program execution. In the case of microprocessor based Kentec products, this memory is mechanically protected by means of a “write enable” slide switch.

For the Syncro product, this write protect switch is located towards the lower edge of the display card and is easily accessible. However for the Syncro AS, Sigma CP, Sigma XT and Sigma XT+ products, this switch is located in the lower right corner of the circuit board and is accessed through an aperture in the panel fascia that is only accessible when the panel outer door is open.

When changing the position of this switch, it is recommended that a small screwdriver or similar tool be used to CAREFULLY slide the switch from one position to the other.
Excessive force applied to this switch may lead to mechanical damage to this sensitive electronic component, which in turn can invalidate the warranty of the product.

Please ensure that care is taken when operating the Write Enable switch.

If you feel a colleague may benefit from receiving In the Technical Loop they can be registered for their own future copy by clicking the following link.

Kentec Electronics Ltd.
Tel: +44 (0)1322 222121 Fax: +44(0)1322 291794