Bosch K2200 Series Installationsanleitung PDF herunterladen (Seite 35)

K2200 Series | Installation Guide | 5.0 Installation Details EN | 35

Bosch Security Systems | 7/03 | 17375 1.3 / 46513C

5.4.5 Emergency Override/Free Exit

There is a special case where both the DR2 and DR1

signals are interpreted differently to the way

described for door monitoring. The DR2 signal is

used to monitor an emergency switch, such as a

break glass, and DR1 provides a Free Exit report.

Note:

When this feature is used there is no door alarm

monitoring. For details on how to enable this feature,

refer to Readykey K2200 Series Controllers User Guide

(Bosch P/N: 47491, PAC P/N: 17376).

Figure 21: Emergency Override / Free Exit Wiring

-VE

GND

DR1

DR2

N/O

N/C

Door ContactBreak Glass

Reader

Door

Controller

N/C

Request to Exit

Special Case for Emergency Override and Free Exit

Emergency Override

When connected as shown in Figure 21, operating

the break glass will open the door and produce an

Emergency Override On report. When the

switch is restored an Emergency Override Off

report is produced and the door will be locked again.

THIS FEATURE SHOULD NOT BE

FITTED AS THE SOLE MEANS OF

ESCAPE.

Free Exit

When this option is set, pressing the Request to Exit

switch will produce a Free Exit report. The door

contact will allow door left open warnings to be

produced.

A normally closed switch may be used to operate as

a request to exit switch, in addition to having a door

contact switch in series (see Figure 21). An additional

special lock mode (Option 8) needs to be set, in

addition to option 2, to allow this feature (see Table

24).

Note 1:

Using this arrangement, the lock will operate whenever

DR1 is opened - this means that care should be taken

that the door contact cannot be broken from the secure

side of the door.

Note 2:

As free exit was designed to work with a door contact

or pushbar the door contact “bounce time” is applied

and the response will be slow if used like an Request to

Exit switch (1.25 seconds).

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