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Table 7 - Processing of intruder, hold-up, tamper alarm and fault signals/messages

Key: M = Mandatory Op = Optional NP = Not permitted.

NOTE 1 The inclusion in Table 7 of requirements relating to warning devices and alarm transmission systems does not imply that l&HAS must include such devices or systems, however if such devices or systems are included in an l&HAS they must comply with the requirements of Table 7.

NOTE 2 Cells containing Op, M or NP represent outputs to indicators, warning devices and ATS the operation of which is dependent on requirements specified in clauses relating to those functions

NOTE 3 Notwithstanding the specification of an item being shown as mandatory, when a notification option is not provided (see Table 10) inclusion of an output is not required.

NOTE 4 Requirements for indication should be read in conjunction with 8.5.

NOTE 5 External WO shall not be activated by the CIE in the unset state, but may self-activate due to the activation of the WD tamper detection or the failure of the interconnection to the CIE

’ Signals and/or messages shall be processed according to the status of the l&HAS, IAS or HAS or part thereof.

^b Information relating to the Zone of the Hold-Up alarm to be included in the information transmitted to an ARC.

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EN 50131-1:2006

The indications specified in Table 8 shall be provided. When a function is not included in an l&HAS the requirements for indications associated with that function need not be provided.

NOTE 1 As an example of the above when an l&HAS does not include a hold-up function requirements for indication relating to hold­up need not be provided.

When it is not possible for the indications provided to simultaneously display all mandatory available information, i.e. mandatory information waiting to be displayed, an indication shall be provided to indicate further information is available e.g. an “information pending’’ indicator.

An alert indication shall be provided when an l&HAS is unset to indicate conditions awaiting indication to a user.

NOTE 2 The operation of an alert indication may be suppressed in certain cases, e.g. to avoid the operation of the alert indication in the event of the activation of a hold-up device.

All mandatory indications required by this clause shall be located together in at least one CIE or ACE. Further indications may be provided at other locations.

Where an l&HAS is required by its grade and notification option to have more than one alarm transmission system, a detectable fault on any of the transmission systems should be indicated to the person setting the system.

NOTE 3 The requirements of EN 60073 apply only to indicators. Warning devices need not comply with EN 60073.

NOTE 4 EN 60073 includes requirements relating to the use of coloured indicators and does not necessarily apply when colour is not used as a means of differentiating indications, e.g. the use of a monochrome liquid crystal display.

Table 8 - Indication

Indication, of the conditions specified in Table 9, shall be available, at access level 1, when an l&HAS is in the set or unset state as specified in Table 9. Indications included in Table 8 shall be available to users who have accessed an l&HAS at access levels 2, 3, or 4.

Table 9 - Indications available during set and unset status at access level 1

Key: Op = Optional NP = Not Permitted NA = Not Applicable M = Mandatory.

NOTE 1 In grade 3 and 4 l&HAS it is not considered acceptable to indicate, at access level 1, the set/unset state of an l&HAS.

NOTE 2 When a function is not provided the associated indication is not required.

^a These indications are time limited.

Indications, except time limited indications, specified in Table 8 shall remain available until cancelled by a user.

NOTE An alert indication shall be shown when an l&HAS is unset, other indications shall be available at access levels 2 and 3 when an l&HAS is set or unset.

It shall not be possible to cancel an indication until the condition causing the indication is no longer present.

Intrusion detectors which include processing capability shall include individual means of indication of alarm conditions as specified in Table 8.

Intrusion detectors without processing capabilities are permitted to share a common means of indication. Not more than 10 such detectors are permitted to share a common means of indication

Hold-up, intruder alarm, tamper and fault conditions and other conditions shall be notified by ATS and/or audible WD in accordance with the requirements specified in Tables 10 and 11. l&HAS shall include means of notification complying with at least one of the grade dependent options specified in Table 10.

The duration of the operational period of an WD may be subject to variation depending on local or national requirements.

The operation of WD may be suppressed, e.g. to avoid the operation of the WD in the event of the activation of a hold-up device.

Dependent upon the grade of l&HAS, when an alarm transmission system is included in an l&HAS the alarm transmission system shall comply with the requirements of EN 50136 at the performance criteria requirements specified in Table 11.

When an l&HAS includes both ATS and WD it is permitted to delay the operation of the WD for a period not exceeding 10 min. It is permitted to suppress the operation of the WD providing notification to an alarm receiving centre or other receiving facility via an alarm transmission system is confirmed by the alarm receiving centre or other receiving facility during the delay period.

When a fault is detected in the alarm transmission system transmission path, any such delay in the operation of a WD shall be automatically cancelled provided that the fault or faults are detected in all available transmission paths.

Audible WD shall operate for a minimum of 90 s unless a shorter period is demanded by local or national regulations. The maximum operating period shall be 15 min unless a shorter period is demanded by local or national regulations.

Notification of prime power supply faults may be delayed for a maximum of 1 h.

The means of notification may be supplemented by non-mandatory means provided such devices do not impair the correct operation of the mandatory devices e.g. mains driven siren or a device to impair vision (fog generating device).

Table 10 - Notification requirements

Key: Op = Optional.

NOTE 1 Digits in cells specify the number of audible warning devices to be included by grade and option.

NOTE 2 ATS 1. ATS 2, etc refers to the performance criteria as specified in Table 11.

Table 11 specifies ATS performance criteria as included in Table 10 in accordance with the requirements of EN 50136.

NOTE Annex В includes an extract of performance requirements specified in EN 50136.

Table 11 - Alarm transmission system performance criteria

l&HAS components shall provide means to prevent access to internal elements to minimise the risk of tampering. Requirements for tamper protection may vary dependent on the grade of an l&HAS and whether an l&HAS component is located within or outside of the supervised area.

l&HAS components located external to the supervised premises shall have appropriate means of tamper protection (e.g. ancillary control equipment, warning devices).

All terminals and means of mechanical and electronic adjustment shall be located within component housings.

Housings shall be sufficiently robust to prevent undetected access to internal elements without visible damage.

Means of access to internal elements of control and indicating equipment, ancillary control equipment, alarm transmission systems, and warning devices shall be robust and mechanically secured. Normal access shall require the use of an appropriate tool.

Means of access to the internal elements of detectors and hold-up devices and shall be secured and normal access shall require the use of a tool.

Access to means provided to adjust the field of view of a detector shall be made inaccessible to unauthorised persons.

l&HAS components specified in Table 12 shall include means to detect tampering. Table 13 specifies the types of tampering to be detected. Tamper detection shall operate in both set and unset state in all grades.

Ancillary control equipment designed for use outside of the supervised premises shall include means to prevent the substitution of the ancillary control equipment and/or signals or messages between the ancillary control equipment and the control and indicating equipment. This requirement need not apply when any such substitution cannot influence the correct operation of an l&HAS.

Table 12 - Tamper detection - Components to include

Table 13 - Tamper detection - Means to be detected