Specifications

Siemens Mobility, Traffic Solutions

Sopers Lane, Poole, Dorset

BH17 7ER

Version 10 Page 28 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

4.6 Electrical Connections: Export Variant

4.6.1 General

The export variants of the Heimdall detectors are not supplied with the captive lead and

standard 9 pin ‘Buccaneer’ connector. Instead the interfacing with the Heimdall detector

is via the supplied ‘internal’ interface wiring block connector as shown in Figure 9.

Figure 9 : Internal Interface Connector

To access the connector, the four fixing screws on the lid must be undone. Care should

be taken when removing the fixing screws as they are captive and are held by a sealing

grommet. Destruction of the grommet may reduce the IP rating of the Siemens product.

This connector should be terminated in accordance with the details shown in sections

below.

Note 1: Particular attention should be paid to the correct termination of the power

supply wires. Terminal 1 should be used for the POSITIVE AC/DC supply feed and

Terminal 2 for the NEGATIVE supply return.

Note 2: When installing this detector with a 24 AC source, please ensure the 24 AC

source is derived from an earthed secondary transformer (as used in standard

traffic installations).

Note 3: When using 24 AC supply, only use battery powered interface equipment

(e.g. laptop, PDA). Do not connect mains powered/connected equipment to the

Heimdall series of detectors, as this will cause the detectors to fail.

Note 4: When installing this detector with a Siemens ELV controller or a Siemens

ELV controller additional supply, please ensure the RED wire of the interface cable

is connected to the POSITIVE (common) connector, the BLACK wire is connected

to the NEGATIVE (-24VDC) source and the GREEN (screen) is connected to the

POSITIVE (common) connector.

Terminal 1