Pyronix Matrix 6/816 Installation Manual

Matrix 6/816 Installation Manual
Page 2 RINS546-10
1.3 Cabling Rules for the Matrix Bus
Care must be taken when connecting devices to the bus over long cable runs. This is to ensure maximum
system integrity under all circumstances (battery backup etc.). The following information is based on using
wire of a minimum of 0.22mm cross sectional area.
The maximum number of devices that may be connected to the bus is limited to four keypads -
this may not be exceeded. Other restrictions apply to each cable run. It is important to restrict the amount of
current carried along each length of cable to limit voltage drops across the system. Apart from being affected
by current magnitude, voltage drops are also dependent upon the length of cable and the types of devices
fitted.
NOTE: It is the length of cable between panel and end device that is important rather than the
overall length on the entire bus.
Table 1: ‘KEN’ (Keypad Equivalent Number) Values for ICON Keypad
DEVICE Description and Configuration KEN
MX-ICON Matrix ICON Keypad 1
NOTE: Remember that the maximum allowable current-draw from the Matrix for external
devices is 0.8A. Any requirement exceeding this must be provided by a separate power supply.
Table 2: Number of ‘KENs’ Allowed for Different Cable Lengths.
Length of Cable
(meters)
Number of KEN allowed with
Single core cable per signal
Number of KENs with standard cable 0V
return doubled (2 cables)
100 3 4
75 4 6
50 6 9
25 13 18

Pyronix Matrix 6/816 Specifications

General

Brand	Pyronix
Model	Matrix 6/816
Category	Control Panel
Language	English