Specifications

Siemens Mobility, Traffic Solutions

Sopers Lane, Poole, Dorset

BH17 7ER

Version 10 Page 40 of 120 Status Issued

Last Editor harry.smyth Date 03 November 2014

Document

Name

GENERAL HANDBOOK FOR HEIMDALL

DETECTORS

Doc. No. 667/HB/31900/000

5.1.4.4 Detector Alignment - Default

The detector uses a movement detection algorithm. Thus, the detector is aimed towards oncoming traffic

and towards the centre of the centre of the carriageway, at a position approximately 25 metres from the

associated ‘stop line’, as shown in Figure 14 below.

Figure 14 – Standard VA Detector Installation – Plan View

5.1.4.5 Detector Range - Default

The detector uses a movement detection algorithm. The range is typically set by the

appropriate angle and installation height. If the user requires a significant reduction in the

detection range (sensitivity), the detector configuration may be adjusted using DIP switch

6 (reference Table 5-4 below). Alternatively the terminal command RGE could be used

(reference section 7.7.4). The default setting is set for maximum sensitivity.

5.1.4.6 Detector Fault Monitor (DFM)

The detector has a fault monitor function. In the default mode, the detector will generate a

fault output (equivalent to a permanent detect) if the detector has not registered an

activation for a period of twenty hours.

This duration can be adjusted to a user defined value by setting DIP Switch 7 to ‘1’ (On)

and then using the terminal command DFM (reference section 7.7.4).

Approx. 10M

Approx. 25M from Stop Line

Approx. 35M from Stop Line

Typical Detection

Zone

Direction of

Travel

1 or 2 Lanes

of Apprroach

Typical Aiming

Point for Detector

Detector Mounted

on top of Signal

Alternative Position #3

(not recommended)

Drawing: Not to Scale

Position #1

(preferred location)

Alternative

Position #2