Bus Connection - Urmet 1068/21 Livret D'instructions

 Close the keypad by screwing the screw provided in the hole. (F - Fig. 1).

BUS CONNECTION

Keypad can be connected on bus either in a cascade or star. Keypad position along bus is not important.
The overall length of all bus sections must not exceed 400 metres.
For wiring, use 4 lead screened cable for anti-intrusion (2 leads for power supply and 2 leads for data
connection). Lead section must be chosen taking into account voltage drop caused by connection length. In
counting out overall system absorption, also consider max consumption in keypad (95 mA).
KEYPAD CAPTURE
To acquire the keypad the first time it is switched on, press the key
associated with the F1 symbol that appears on the display
Proceed as follows to restore default settings (Reset) on the keypad, if
necessary:

Disconnect power from the keypad

Open the keypad tamper protection

Restore power supply to the keypad

Press the key associated with the F1 symbol within 10 seconds (Fig.3).
Another screen will appear (Fig.4).

Press the key associated with the F1 symbol to confirm parameter reset.
Press the key associated with F3 "Cancel" symbol to return to the
previous screen
For further information about capture procedure, refer to manual concerning
control unit installation.
DS1068-008A
Fig. 2
.
Fig. 3
Fig. 4
3