3
947586
Wall
: Attach mounting brackets as shown in Figure
1, and secure to wall with proper hardware (not
included).
Figure 1. Mounting
Power Connections
The preferred method of powering a VIP-851 is via
a Power over Ethernet Plus (PoE+) switch meeting
the 802.3at specification.
If the rear panel barrel connector is used for power,
the preferred power supply is a Valcom VP-1124D
or larger power supply.
Make all required signal connections before
applying power to the unit. If powering via 802.3at,
make sure all signal connections via the back panel
are made then connect the VIP-851 to the Ethernet
switch.
If power is supplied via the barrel connector, make
sure all signal connections are secure. Attach the
unit to the network via the front panel RJ-45
Ethernet connector. Apply power by plugging the
power supply into the VIP-851 via the barrel
connector on the rear of the VIP-851.
Network Connection
The VIP-851 has one RJ-45 network connector on
the front panel. Use a standard Ethernet patch
cable to connect the VIP-851 to an Ethernet switch.
Signal Connections
The VIP-851 has signal connectors on the rear
panel:
AUX audio input
1 Contact Closure input
2 Audio outputs (VIP-851-25-IC)
4 Audio outputs (VIP-851-25/70/100-IC)
1 Form C relay output
AUX Audio Input
: Line-level audio may be input
via the rear panel screw terminal block labeled
AUX. Nominal input impedance is 600 Ohms.
Audio connected on AUX is directed to the locally-
connected speakers (Output connections). The
AUX audio input is typically used for local
background music, and will be muted during a
page.
The supervision feature of the 25V
speaker output is disabled if using the AUX
input for audio to locally-connected 25V
speakers.
Contact Closure Input:
Contact closure input
labeled CC is provided for connecting an external
contact (relay, switch, etc.) to trigger actions in the
VIP-851. The input can be programmed to
remotely activate a relay on another Valcom device
across the network and send a syslog message.
Audio Outputs:
Two or four audio outputs are
available, depending on model. The VIP-851-25-IC
provides two outputs, LINE and 25V.
The VIP-851-70/100-IC provides four outputs, LINE,
25V and 70V or 100V. The LINE output provides a
line-level signal suitable for driving up to 40 Valcom
self-amplified speakers or other devices requiring a
line-level source. The LINE output may be used in
combination with the amplified outputs. The
amplified outputs provide up to 20 watts of audio
power suitable for driving up to a 20 watt load of
25-volt, 70 or 100 volt speakers. 25-volt speakers
will connect to the 25V terminals. 70-volt speakers
will connect to the COM (common) terminal and the
70V terminal. 100-volt speakers will connect to the
COM terminal and the 100V terminal. Do not mix
25V, 70V and 100V speakers on the same
VIP-851-70/100-IC.
Relay Output:
Access to the form C relay is
provided via a three pin screw terminal block. The
relay is labeled K1. The relay is brought out on
three terminals. The common contact is the middle
terminal with the normally closed contact labeled
NC and the normally open contact labeled NO.
Relay contacts are rated for 1A @ 24VDC.
VIP-851 Front View
