Model MRC44KP
Page 19
© 2001 Xantech Corporation
The maximum cable length for CAT5 connections to a single keypad is 400
feet (see
Figure 8A
). For two keypads in a zone, the distance to the last
keypad is 200 feet (see
Figure 8B
).
PWR
VGS
IR RCVR
Figure 9 – MRCCB1 MRC44 Connecting Block
If both keypads in the zone are using an external IR receiver, the MRC44
Connecting Block (see
Figure 9
) is used to expand the connections on
the back of the primary keypad as shown in
Figure 8C
.
If your installation requires cabling beyond these limits you can use the
MRC44 Connecting Block to power the keypads from a separate run of
+12VDC as shown in
Figure 8D
. The +12VDC can also be generated in
the zone from a model 782 power supply or from a source at the
Controller/Amplifier location (run an 18 gauge speaker wire to the
MRC44 Connecting Block to minimize line loss. This method will extend
the distance to the last keypad in the zone to a maximum of 1000 feet.
The Maximum cable run to the external IR receiver in each of the above
cases is 250 feet from the keypad.
