INS161
3
Keypad
Control Panel
+
Data Bus
+
-
Data Bus
-
T
Data Bus
T
R
Data Bus
R
Up to six keypads may be connected in parallel (‘star’) or series
(‘daisy-chain’) or any combination.
When using long cable runs or connecting keypads in series
(‘daisy-chain’) ensure that the voltage at the keypad is no less than
10.0V.
When using 6-core or 8-core cable always use the spare cores to
‘double-up’ on 0V. This will allow longer cable runs particularly when
connecting keypads in series (‘daisy-chain’). As a rule ‘trebling-up’ on
0V will be more beneficial than ‘doubling-up’ on 12V and 0V.
Figure 1 - Cable Entry
Cable entry MUST use either the top left-hand hole or the cable channel.
NEVER run cables behind the PCB.
!
