Bosch K2200 Series Guide d'installation télécharger pdf (Page 53)

K2200 Series | Installation Guide | 7.0 Troubleshooting EN | 53

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

7.0 Troubleshooting

This section is designed to help you establish if a fault

exists within a door controller or not. To do this

efficiently, we recommend that you are equipped

with the following:

• A multi-meter capable of reading volts (0-300

VAC, 0-30 VDC), amps (0-3 A) and ohms.

• A Readykey reader on a flying lead that can be

plugged into a reader channel, this should also

have buttons emulating a door contact (DR1-

GND, normally closed) and the Request to Exit

switch (DR2-Gnd, normally open).

• The usual collection of hand-tools, screwdrivers,

wire strippers and cutters, etc.

• Replacement fuses.

7.1 Door Controllers and Readers

7.1.1 The controller appears to be dead

1. Before performing any of the following checks,

remove any batteries and disconnect all readers,

lock outputs, serial connections and six-wire bus,

where fitted.

2. Check the heartbeat LEDs located on the bottom

left of the circuit board. If the green LED is

flashing, it indicates that the controller is healthy.

If the red LED flashes, this indicates that

communications is occurring.

3. Press the ? key on the keypad. If the door

controller is operating correctly, there should be

a beep and the software version should be

displayed on the screen. If there is no reaction,

check the ribbon cable between the faceplate and

the main circuit board is properly connected.

4. Check the AC power supply. This should be

between 85 and 250.

5. Check the power supply fuse. This is found in a

pull-out drawer just below the AC cable socket.

Replace with a 2 A, 20 mm fast-blow fuse. (Only

in the 4 A power supply).

• Check the battery output voltage at the

battery terminals, this should be 13.8 VDC

or 27.6 VDC depending on the lock output

voltage.

• Check the power supply outputs. These are

indicated on the circuit board next to the 8-

pole connector, CN7.

• +V and -V (six wire bus supply) 12 VDC

• Blue GND and +5 V (logic supply) 5 VDC

• Black GND and +18 V (reader supply) 18

VDC

• Black GND and BAT+ (battery supply)

13.8 VDC or 27.6 VDC

• Black GND and +12 V (lock output

supply) 12 VDC or 24 VDC

• If the door controller fails on any of the

above checks, the power supply is probably

at fault, arrange for a replacement with

your supplier.

• If the door controller passes all the above

tests, test each reader and lock output in

turn, as described in the next section.

7.1.2 One or more readers or locks fail to

operate

Before carrying out the following tests, disconnect all

the readers and lock outputs. Refer to the

Engineering Mode: Testing (see Section 6.1.6 Test

Mode), this contains details on how to check reader

operation.

Each reader channel should be tested in turn.

7.1.3 Checking the Reader

1. With no reader connected, check the voltage

between GND and +18 V. This should be at

least 18 VDC.

2. Reconnect the reader. Check the voltage at the

reader. This should be above 10.5 VDC. If not,

check the gauge is correct for the cable distance

from the controller (see Reader Cabling).

3. Check the reader operation by presenting a key,

if the door controller is in Engineering Mode (see

Section 6.1.6 Test Mode), a 1 or 2 should appear on

the display while the key is being read by the

reader.

4. If no key is read, disconnect the reader and

connect a known working reader and repeat step

5. If the working reader operates correctly, suspect

a faulty reader, or wiring between the door

controller and reader. Go to step 8 to check the

wiring and reader.

6. If the working reader does not operate, suspect a

faulty reader channel on the door controller.

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Bosch K2200 Series Guide d'installation Page 53

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