Digiguard H.264 Digital video recorder -4/8/16 channel models Instructions d'exploitation télécharger pdf (Page 110)

MAN0443.P65 Issue 13 Aug 04 5701 Control System

05701-M-5001 A02279

CHAPTER 4 - INSTALLATION INSTRUCTIONS

4 - 47

Three Wire Control Card Current Source, Transmitter Current Sink Connection for

Searchpoint 500 (Signal Returned to Regulated +23V Supply)

Arrows Indicate

Direction of Loop

Current Flow

Screened

Cable

Cabinet

Protective

Earth

Note: Where a sensor is earthed locally, either to the Earth Stud or

through the sensor casing or mounting, to avoid earth loops the

screen sheath of the cable should only be connected at one

end. ie. At the sensor or at the Interface/relay Card.

Single Channel Control Card 4 - 20mA 05701-A-0301

Fitted with 4 - 20mA Sensor Drive 05701-A-0283

Relay/Field Interface Card

05701-A-0326

05701-A-0327

05701-A-0328

05701-A-0329

05701-A-0330

LK3

Link Positions

LK1

LK12

LK9

LK6

SC SKN/C

24V

+24V

4 - 20mA (+)

Searchpoint 500

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Digiguard H.264 Digital video recorder -4/8/16 channel models Instructions d'exploitation Page 110