Functions / Application; Manual Unlocking; Motor-Driven Release; 4.2.1 Motor-Driven Release Of Active Leaf - G-U BKS B-1993x-RWA Manual De Instalación

Installation instructions
B-1993x
Motor-driven shoot-bolt lock for narrow stile systems smoke and heat exhaust ventilation
40
4.

Functions / Application

4.1

Manual unlocking

The lock can be unlocked manually at any time by actuating the door hardware.
4.2

Motor-driven release

The motor-driven shoot-bolt lock B-1993x offers the option of releasing a 2-leaf door.
Two release modes are available:
- release of active leaf
- release of active and inactive leaf

4.2.1 Motor-driven release of active leaf

When a pulse (+24 V DC) is received at control input I1, the motor moves the latch trigger out thus
releasing the latch and/or latchbolt.
Signal contact 2 ("Unlocked" position reached, terminal 42 + 52) is closed. The active leaf can now be
opened. Once the hold-open time has elapsed (7 s in as delivered condition), the latch trigger is once
again retracted and the active leaf can close again. In addition, the signal contact 1 ("Locked"
position reached; terminal 41 + 51) is closed.
Fig.8: Motor-driven release of active leaf
EN
10.2017 | 20427ES | Designed in Germany