INSTALLATION PROCEDURE
IMPLEMENTING FIRE-ALARM MUTING WITH RMS™ AND THE ILON-100
To ensure the safety of patrons at venues where high-level sound reinforcement is active, some venues require that the system
be enabled to automatically mute when a fire alarm or other emergency signal is triggered.
The iLON-100 will provide the same type of functionality in an RMS system as the basic iLON-10 Ethernet Adapter does,
allowing a conversion between Ethernet to the host PC and/or network and two-wire connection to the RMS-fitted loudspeaker
systems. In addition, the more versatile iLON-100 provides many more features and input/output options, including those that
allow a fire alarm or external relay to trigger a global mute command to the connected loudspeakers.
A direct link with each loudspeaker (its amplifier) is necessary for the muting to be accomplished. Version 4.9 of RMS, along with
the iLON-100, can reliably provide that muting.
Figure 1. The iLON-100 Ethernet Adapter (labeled with inputs and outputs)
Wire the iLON-100 as follows to allow a fire alarm or other relay contact to control the muting of the loudspeakers.
1. Connect the RMS two-wire connections to positions 17 and 18.
2. Connect a jumper wire (approximately 0 ohms of resistance) between positions 15 and 19 (the Ground connection on
the iLON-100).
3. Connect a 4.99K resistor between positions 15 and 16.
NOTE: The resistor stabilizes the interconnections to prevent false triggering of the muting command to the
loudspeakers.
4. Connect a wire between position 16 and the closure side of the fire alarm dry contact relay (floating).
5. Connect a wire between position 20 (the +12V connection on the iLON-100) and the relay trigger side of the fire alarm
dry contact relay (floating).
When the relay is open, the RMS network operates and monitors normally, and the loudspeakers will pass audio. When the relay
is closed by a triggering event, RMS via the iLON -100 will send a mute command to all connected loudspeakers. When the
relay is reopened, the mute command is reversed and the loudspeakers will again pass audio.
Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
© 2006
Meyer Sound Laboratories Inc.
All Rights Reserved
PN: 17.033.300.15
Rev: B
IMPLEMENTING FIRE-ALARM MUTING WITH RMS™ AND THE ILON-100
Input 2
Input 1
Net
GND +12V
-
+
-
+
-
+
13
14
15
16
17
18
19
20
*
Fire Alarm
Dry Contact
Relay (Floating)
RMS Net
* 4.99K Resistor
Open = Normal
Closed = Mutes Speakers
Figure 2. Wiring diagram for iLON-100 fire alarm muting
Meyer Sound Laboratories, Inc
All Rights Reserved
Copyright 2005
05.033.300.15 Rev. A
Figure 3. Warning screen and muting dialog in RMS
NOTE: Each of the loudspeakers connected to RMS must have muting enabled (the jumper in place on the
RMS board) in order for the muting command from the closed contact to function.
If you have any questions, please contact Meyer Sound.
Meyer Sound Laboratories Inc.
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
PN: 17.033.300.15 B
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