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Volume Control
OUT
IN
- 24V +
+
-
24V
100V
Microphone
100V
olt
com
com
Amplifier
24Volt Priority output
• MA200
• MA200R
• MA200CDR
• MA125
• PA240P (only 30pcs)
e.g. You can use one of
these APart amplifiers
to connect up to 50pcs
volume controllers.
TOTAL LOUDSPEAKER POWER : 3 - 20 WATTS MAXIMUM !!!
USE ONLY HIGH IMPEDANCE
100VOLT LOUDSPEAKERS
4-WIRE CONNECTION WITH PRIORITY
What does a priority system do ?
When the volume controller is turned to 0 there is no background-music. (e.g. meeting room, office)
At this moment if there is a microphone call the information is lost.
With the priority system connected, the volume controller is set to maximum volume during the microphone call.
In this way there is no information lost.
To be able to use a priority system you need the following components :
- Volume controller with priority relay
- Amplifier with 24Volts priority output contact (24Volts / 1A : you can connect up to 50pcs of volume controllers)
- 4-wire cable connection
- Microphone (MICPAT-D)
E-VOL20
Please note that the volume control can also be used without this priority system or 24 V dc.
The priority system is often used for emergency announcements or to allow the paging come thru at maximum
level for a clear understanding.
As a standard, with jumpers set on 2-3 and 5-6, the relay will bypass the volume control to obtain maximum level
when 24Vdc is applied.
For special safety emergency applications with inverted operation mode,
the jumpers can be moved to 1-2 and 4-5.
In this case, 24Vdc and thus the relay will always be activated for normal operation with the volume control.
The volume control will be bypassed and set to its maximum as soon as the 24Vdc is cut off.
PRIORITY RELAY SYSTEM
100V
0V
0V
24V
N.C
N.O
1
2
3
4
6
5
J1
J2
