Bosch K2200 Series Instalační příručka stáhnout pdf (Strana 36)

K2200 Series | Installation Guide | 5.0 Installation Details EN | 36

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

5.4.6 Lock Output

Wiring Diagram

Figure 22: Lock Output Wiring

L+

N/C

Door

Controller

L- -

Electric Release or Lock

L+

L- -

MOV

Fail-safe or Fail-secure lock

Fail-safe lock with safety

Break Glass

All locks should be fitted according to the

manufacturer's instructions.

The door controllers provide a lock output for each

reader channel. These outputs are capable of

providing either 12 VDC or 24 VDC. The lock

output on each channel must not be able to exceed

2.0 amps at 12 VDC or 1.0 amp at 24 VDC. The

lock voltage is set using a jumper on the right hand

side of the power supply

Each lock output is protected by resettable fuse on

the controller. Two status LEDs are also provided for

each lock output. These operate as follows:

• Fail Safe Locks. Both the red and green LEDs

are normally off. When a valid key is presented

to a reader, both LEDs come on for the duration

of the lock release time. A fault is indicated

when only the red LED is lit.

• Fail Secure Locks. Both the red and green LEDs

are normally on. When a valid key is presented

to a reader, both LEDs go off for the duration of

the lock release time. A fault is indicated when

only the red LED is lit.

Each output can be independently set as fail-safe

(power to lock) or fail-secure (power to unlock).

The cable between the door controller and the lock

should be of such a gauge as to provide at least the

minimum voltage required to operate the lock. The

resistance of the cable and the current drawn by the

lock will determine the type of cable.

Lock Supervision

All locks must be fitted with a means of suppressing

back Electro-Motive Force (EMF) 'spikes' generated

by most electric releases, especially magnetic locks.

All Readykey door controllers and readers are

supplied with MOVs (metal oxide varistors). If large

currents are used (i.e. >1 A) use the large MOV

supplied with the door controller. If small currents

are used (i.e. <1 A) use the small MOV supplied with

the reader.

The MOV will prevent long term damage being

done to the door controller. Whenever possible this

device should be fitted across the lock terminals. If

for any reason, the lock terminals are inaccessible,

the MOV may be fitted across the lock output.

Safety

Any door that is considered a fire door or is on an

escape route must have some means of overriding

the electric release in an emergency. Usually this is

achieved by the use of fail-safe locks (power to lock)

fitted with a normally closed break-glass in the lock

supply. When the break-glass is operated, the supply

to the lock is broken and the door will be released

without any intervention from the door controller.

5.4.7 Lock Sharing

Note:

This is only required when the in/out readers do not

have a Readykey output (i.e. Wiegand or Magstripe

readers). Where the readers have a Readykey output

you can have two readers on the one channel.

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