Xantech Extended Runs and Secondary Keypad In Zone, MRC44 Keypad CAT5 Cable Lengths

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Extended Runs and Secondary Keypad In Zone

A	400 feet max (122 m)
	IR Receiver

B	200 feet max (61 m)
	IR Receiver

IR Receiver

		MRC44
		Connecting
C		Block
	PWR IR RCVR	S
		G	IR Receiver
		V
	200 feet max (61 m)
			782-00
			Power Supply	IR Receiver
			To 120 V AC
			(unswitched)
D	400 feet max (122 m)
			PWR IR RCVR	G S	MRC44
				V	Connecting Block

600 feet max (183 m)

Model MRC44

IR Receiver

Figure 11 – MRC44 Keypad CAT5 Cable Lengths

The maximum cable length for CAT5 connections to a single keypad is 400 feet (see Figure 11-A). For two keypads in a zone, the distance to the last keypad is 200 feet (see Figure 11-B).

MRCCB1

PWR

IR IN CONTROLLER

V G S

KEYPAD

Figure 12 – MRCCB1 MRC44 Connecting Block

If both keypads in the zone are using an external IR receiver, the MRC44 Connecting Block (see Figure 12) is used to expand the connections on the back of the primary keypad as shown in Figure 11-C.

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 11-D. 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 600 feet.

The Maximum cable run to the external IR receiver in each of the above cases is 250 feet from the keypad.

© 2002 Xantech Corporation