Connecting VC201/VC201i keypads to VC220pmi controllers
:
Use a single cat5 wire using all eight conductors (usually run inside a wall).
Always use standard T568A Cat 5 wiring practices (shown below). Use the
correct wire pairs. Polarity is VERY important! The stereo signal is not routed to
the keypad, just the digital control signals. Signals from an infrared receiver (if
used) are routed down the same Cat 5 wire. If more than one keypad (VC201,
not VC201i) is to be connected to a VC220pmi controller, the wires to the
keypads are paralleled.
VC201i keypads are
connected to VC220pmi
controllers, the same as
other keypads, the only
difference is extra power
supply and IR emitter
wiring are required (see
Infrared connection
diagram below).
Connection to Stereo Equipment:
Remove the VC220pmi eight-position
speaker connector. The stereo amplifier or receiver outputs (left and right) are
connected to the VC220pmi connector labeled “TO AMP”. Be very careful to
observe the correct polarity. The VC220pmi uses independent floating grounds
so bridged amplifiers can be used safely.
*** The VC220pmi is rated for use with maximum
120 watt per channel amplifiers. DO NOT use higher-
powered amplifiers with this product for safety
reasons.***
Up to eight VC220pmi controllers can be connected to a single amplifier or
receiver if it rated for 4-ohm use. If the amplifier or receiver is rated for 8-ohm
use, up to three VC220pmi controllers can be connected. Wire from the
amplifier speaker terminals are always wired in parallel to the VC220pmi
controllers “TO AMP” terminals either by stripping and soldering, using a
speaker wire paralleling board (our model WT6), or daisy chaining from one
VC220pmi connector to the next VC220pmi connector etc. Connect all
VC220pmi’s to amplifier speaker A or speaker B terminals, but not both. Wire
the VC220pmi connectors labeled “SPEAKER” directly to the correct speakers,
again strictly observing polarity.
Power Requirements:
The
VC220pmi needs a 12vdc power
supply. The VC220pmi controller also
supplies power to the keypads. A
maximum of 60mA is needed for each
VC220pmi. If possible, connect the
12vdc power supply to the switched
outlet on the rear of the amplifier or
receiver. This wiring causes the VC220pmi to reset to its selectable “boot up”
every time the receiver or amplifier is turned on. The plug on the end of the
12vdc power supply needs
to be cut off and discarded. The wire is stripped off
and connected to the VC220pmi terminal l12V and G (ground is the
negative terminal). To connect more than one VC220pmi to a receiver, daisy
chain the 12vdc power supply wires to the other VC220pmi controllers.
If one 12vdc power supply
powers both the VC220pmi and the VC201i
infrared receiver, wire the unswitched 12VDC supply to the “POWER” +12V and
G terminals on the VC220pmi, then run a jumper wire from the “POWER” +12V
to the “INFRARED” 12V terminals.
Installer Selectable “BOOT UP”:
The VC220pmi allows the installer to
select how the volume control “boots up” when it first receives 12vdc power. If
this feature is required, be sure to plug the 12vdc power supply to the switched
AC outlet on the rear of the receiver or amplifier. The VC220pmi default is start
muted when the 12VDC power is first turned on.
•
To always start muted and in the lowest volume step (off) make sure the right
side shunt on the VC220pmi controller labeled "start muted" is in place.
•
To always start up in a quiet position #6 (of 17). Remove the right shunt
labeled "start muted" and make sure the left shunt labeled "#12 #6" is in
place.
•
To always start up in a louder position #12 (of 17). Remove the right shunt
labeled "start muted" and remove the left shunt labeled "#12 #6".
•
To restore the boot up defaults, replace the appropriate shunts.
Operation:
The Knoll digital volume control is very easy to use. It has a total
of 17 different volume settings. Volume settings only affect the room that they
are in. After the stereo is turned on, you may or may not have sound
depending on how the system was set up during installation.
To increase the volume (in this room only), push the rocker button up. Hold the
button up continuously and the volume will increase until maximum. To lower
the volume, push the rocker button down. Hold the button down continuously
and the volume will decrease until it mutes.
At any time firmly press the center of the switch to mute the volume. To
restore the volume press the rocker button up or down.
The RB8 remote control source buttons do not work on the VC201/VC220pmi as
it has no source selection capabilities.
If infrared emitters where installed other (source) remote controls aimed at the
VC201i keypads will control the source components.
On VC201 keypads
the lower led indicates that power to the system has been
switched on. The six side leds show the relative volume. When in mute (center
of rocker has been pushed) one of the side leds blinks. To restore the volume
press the rocker button up or down.
Note: If the stereo is on and the Knoll digital volume control has lost power, it
defaults to position #12.
Stereo
12VDC power supply plugged
into stereo switched outlet
POWER INFRARED
+12V
G
12V
SIG
Infrared
emitter(s)
12VDC power supply
plugged into power
full time
+
-
+
-
VC220/VC220pm
brown 8
white/brown 7
orange 6
white/blue 5
blue 4
white/orange 3
green 2
white/green 1
