Installation guide

Section 2 - Installation of the Control Panel 21
As the LCD keypad current consumption is larger than that of the LED keypad
(particularly with active illumination of the keypad and display), it is important that
resistance of the power supply and ground lead-ins be taken into account when
planning the cabling installation.
Caution: The supply voltage measured across the terminal block of LCD keypad
with active backlighting should not be less than 11V.
The keypad jumpers determine the address which is an additional anti-tampering
protection. A different (arbitrary) address should be set in each keypad. The
panel does not accept addresses of the „all shorted” and „all open” type addresses.
The address is stored in the panel EEPROM (non-volatile) memory, together with the
other system parameters.
The keypad Z1 and Z2 connectors permit connecting any detectors. They are
supported by the control panel in the same way as the main board zone inputs. The
Z1 connector, partition 1 keypad, is recognized by the panel as zone 9, the Z2
connector, partition 1 keypad - as zone 10, etc. Thus, with four keypads, the control
panel has 16 zones. Alternately, a lower number of keypads and a zone expander
can be used.
COM +KPD DATA
CLK1
CKL2 CLK3 CKL4
+KPD
CLK Z1 Z2DATA COM
Partition
zone 9 zone 10
keypad
1
Control panel main board
CLK Z1 Z2DATA COM
Partition
zone 11 zone 12
keypad
2
CLK Z1 Z2DATA COM
Partition
zone 13 zone 14
keypad
3
+KPD
+KPD
Figure 4
- Connection of three keypads to the control panel.