Videx 4000 Série Manuel D'installation page 2

4000 Series
Art. 4902
Digital codelock module
LOCK RELEASE BACK EMF PROTECTION
A varistor must be fitted across the ter-
minals on AC lock release (Fig. 3) and
a diode must be fitted across the ter-
minals on a DC lock release (Fig. 4) to
suppress back EMF voltages. Connect
the components to the lock releases as
shown in figures.
BUZZER BACK EMF
When using intercoms with buzzer call (Art. 924/926, SMART1/2, 3101/2, 3001/2 and 3021/2) add one 0.1uF (100nF) capacitor be-
tween terminals 3 and 6 on the telephone.
BACK LIGHT ADJUSTMENT JUMPER (JPL)
The jumper JPL (Fig.2,
D
determine the operation of the backlit buttons.
The table below indicates the position of the jumper and the
operation of the backlit buttons.
RS485/USB PROGRAMMING INTERFACE SWITCH
To select betwen RS-485 serial interface or USB, operate on
switch .
F
RS485 BUS TERMINATION JUMPER
The jumper on the rear of the codelock sets the RS485 bus ter-
G
mination when connected to other RS485 devices. By default the
jumper is set to the ON position (across to the left). When more
than one RS485 device is connected to the keypad in line on the
RS485 bus terminals then the jumper can be set to the OFF posi-
tion (across to the right) and only set to the ON (closed) position
on the end of line device
BUILT-IN RELAYS – BACK EMF PROTECTION
The Art. 4902 includes selectable back EMF protection on the relays. The jumpers marked MOV (one jumper for each relay) are used
to select the protection type. When using a fail secure lock with connections C & NO the jumper should be in the NO position. When
using a fail open lock with connections C & NC the jumper should be in the NC position and when using the codelock to trigger a gate
controller or another third party controller the jumper should be removed completely (this disables the protection on the relay).
OPERATION
• Type in the programmed code and press ENTER;
• If the code is correct, the green LED will illuminate and the relay will operate for the programmed time;
• If a wrong code is entered, a continuous melody will sound for 4 or more seconds, according to the number of mistakes;
• To switch off any relay while active, type in the relevant code then press the CLEAR button.
OPERATION NOTES
If a wrong code is entered, the system will lock out for 5 seconds which will increase each time a wrong code is entered. The system
will operate only when the correct code is entered.
Art. 4902
- Installation instructions
Fig. 3
) is used to adjust the brightness and
VARISTOR (MOV)
12V AC
LOCK RELEASE
Jumper Position
A
(default)
B
JPL
removed
USB
Move the switch
RS485
Move the switch
RS485 ON
Move the jumper
RS485 OFF
Move the jumper
- 2 -
DIODE 1N4002
12V DC
LOCK RELEASE
Fig. 4
Back light Operation
A
Back light on low brightness
B
A
Back light on high brightness
B
A
No back light, the back light is com-
pletely disabled.
B
in the upper position
F
in the lower position
F
in left position
G
in right position
G
66251790 - V1.3 - 30/11/20