025-9567E
51
AUXILIARY PANEL INSTALLATION
OVERVIEW
This section of the manual covers the installation of one or more Model 25 Auxiliary Panels
in a system to augment the Model 25 Encoder.
All of the cautions and warnings shown on page 29 for the Model 25 Encoder also apply to
the Auxiliary Panel.
OPTION SELECTION
There are two options that are jumper selectable; the panel address and the
CLEAR
key
function. The panel address is important because it is part of the numbering of the instant call
keys on the panel. The possible panel addresses are 1, 2, and 3. If the auxiliary panel being
installed is meant to expand the number of instant call stacks then this panel should not be
addressed the same as any other panel already present. If this panel is meant to operate in
parallel for backup or twin-station operation, then this panel should be addressed the same as
its intended companion. You will already have at least one panel already in your system; the
encoder’s instant call panel. If the encoder in your system does not have a keypad then the
encoder panel address is 1, otherwise the encoder panel address is 0.
The address of an auxiliary panel is determined by jumper JP1, which is accessible through
the cutout in the back panel (see Figure 9). In position “A” the address is panel 1, in position
“B” the address is 2, and in position “C” the address is 3.
Jumper JP3 configures the
CLEAR
key function. When JP3 is installed, a press of the panel’s
CLEAR
key will clear all of the panel’s status LEDs. When JP3 is removed, the
CLEAR
key
will allow selective clearing of LEDs. Using the selective method, the first press of the
CLEAR
key will illuminate its LED to indicate that the panel is in the clear mode. Any key
pressed while in the clear mode will cause the keys LED to go out. Another press of the
CLEAR
key will cause the
CLEAR
key LED to go out, indicating that the panel is no longer
in the clear mode. If a jumper is repositioned while the panel is powered, then the power
must be removed and reapplied otherwise the option changes will not take place.
CONNECTING TO THE ENCODER
The auxiliary panel is connected to the encoder via the encoder’s communication loop. The
loop connections consist of three wires on the input side and three wires on the output side.
Each side has a signal-ground and a chassis (for shield) connection. The signals carrying data
are
LOOP IN
on the input side and
LOOP OUT
on the output side. The input side of the panel
is feed by the output side of the prior loop member, and the output side of the panel feeds the
input side of the next loop member. This communications loop forms a daisy chain and uses
the encoder as the loop controller.
Summary of Contents for Model 25
Page 1: ...Model 25 Programmable Encoder Product Manual 025 9567E...
Page 2: ......
Page 16: ...Specifications 8 025 9567E...
Page 36: ...Operation 28 025 9567E RELAY TIMING DIAGRAM...
Page 62: ...Auxiliary Panel Installation 54 025 9567E...
Page 72: ...Troubleshooting 64 025 9567E...