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Technical Manual

RZ-24 Central

Safe area

L1 N PE

Central

unit

RZ-24

10 +

* Each ex-magnet has to be individually fused, with the fuse installed upstream of the magnet.

You can find more information in the manual of the magnets.

On site, the integration of a gas warning system must be checked by the ATEX representative

on the basis of explosion protection guidelines.

** Please refer to the Zener barrier manual for the detailed connection diagram.

5e) Cable Installation

Page 07.021.14

Electrical Connection and Installation of an Ex-

Proof Hold-Open System with RZ-24 - cont.

230 VAC

supply of the door

operator controller

AR* = cutoff relay for

If necessary,

door operator

2 ex-proof

CLOSE switches

Fuse*

Zener barrier

Z779**

Screening, optional

(operational earth)

The detection line and the tripping line are energized with low voltage.

Admissible laying systems are surface type with nail clamps, adhesive

clamps or spacing clamps, in open or closed tubes, cable ducts and

profile rails and flush type in slots or tubes.

For cabling you need:

a. Fire detection line: e.g. Ölflex EB 2x0.75 mm

Mark intrinsically safe current circuits light blue and lay them sepa-

rately (see DIN EN 60079-14).

b. Hold-open system: see description of the ex-proof electromagnets

Power line:

Tel. +49(0)821-24673-0 • Fax +49(0)821-24673-90 • E-mail [email protected] • 20220325

Hazardous area zones 1 - 2

Up to 12 electromagnets

EM GD 50 EX or EM GD

70 EX

Max. 20 intrinsically safe

RM 3000IS EX smoke detectors or

WM 3000IS EX heat detectors

NYM-J 3x1.5 mm

Ex-proof hand

release switch

with

700232

resistor

3,9 kΩ

Ill. 6b