GAI-Tronics MI05-101 User Manual
Pub. MI05-101iom.2
G A I - T R O N I CS ® C O R P O R A T I O N
A H U B B E L L C O M P A N Y
Model MI05-101
Merge/Isolate Cabinet
Confidentiality Notice
This manual is provided solely as an operation, installation, and maintenance guide and contains sensitive
business and technical information that is confidential and proprietary to GAI-Tronics. GAI-Tronics
retains all intellectual property and other rights in or to the information contained herein, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third
party.
General Information
The Model MI05-101 Merge/Isolate (M/I) Cabinet is designed to operate in a multi-zone Page/Party
communication system. The cabinet can selectively merge and isolate up to five zones that normally
operate independently. Each zone’s Page/Party®communication cable, which contains five party lines
and one page line, is connected to the M/I cabinet.
®
When merged, the zones share a page line and a party line. For example, two zones can be merged while
the remaining zones in the system are isolated and continue to operate independently. Voice pages
generated from handset stations within one zone can be heard in the other zone when the two zones are
merged. The actual merging and isolating of the zones is controlled by a GAI-Tronics Model MS05-101
Master Desktop Station (or equivalent), which works in conjunction with the cabinet. The cabinet supports
a maximum of eight master stations.
In addition to merging and isolating the system zones, the cabinet can also perform other functions when
equipped with the following accessories, all of which can be added at any time:
MS05-101 Master Desktop Station or equivalent — a Page/Party®handset station that also provides
the capability for an operator to direct the merging and isolating of zones and manual initiation of
alarms when used in conjunction with the M/I cabinet.
10959-101 Audio Messenger Interface (AMI) — a microprocessor-controlled tone/speech generator
that produces alarm tones (with speech messages) to alert people of emergency conditions.
10959-103 Audio Messenger Interface with Telephone Interface — provides the same features and
functions as the Model 10959-101 described above, but adds telephone interface circuits to allow
telephone users the ability to make voice pages and to communicate with handset stations in the
Page/Party®system on party line 5.
GTK99019 Audio Interface — allows other audio sources, such as 2-way radio equipment, to be
connected to the system.
GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
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Alarm Activation Switches — allows external switch or relay contacts to activate the AMI. (The
AMI must be connected).
GTD99001-VLCX Volume Level Control Transmitter—provides activation of remote devices using
existing system cable. This kit can be used to activate strobe lights via other devices or mute and
un-mute speakers at Page/Party®stations.
Figure 1. Typical Block Diagram
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Figure 2. Merge/Isolate Cabinet Component Locations
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Installation
NOTE: All system line balancing is located in this cabinet; therefore, any existing page and party line
balance assemblies must be removed when the Model MI05-101 Merge/Isolate Cabinet is installed.
Cabinet Mounting
Mount the M/I cabinet in a secure area that is protected from adverse environmental conditions such as
rain, heavy dust, excess moisture, and temperature extremes. For optimum performance, mount the
cabinet no farther than one mile from the farthest Page/Party®station. Mount the enclosure to the wall by
installing four mounting bolts through the predrilled holes in the rear of the enclosure.
Field Wiring
All terminations are made to the Termination PCBA using modular terminal block connections. Each
connection is labeled inside the M/I cabinet.
Connecting FieldStations
1. Locate the Termination PCBA in the lower left corner of the cabinet. See Figure 2.
2. Connect all page and party lines from each of the zones to the appropriate terminals on the
Termination PCBA. GAI-Tronics 60038 Series single party cable or 60029 Series multi-party cable
is recommended.
TB1 Zone 1 field stations
TB2 Zone 2 field stations
TB3 Zone 3 field stations
TB4 Zone 4 field stations
TB5 Zone 5 field stations
3. Make the following connections:
Terminals
Field Stations Merge/Isolate Cabinet
Function
TB1-8 and TB1-9 TBx-1 and TBx-2 Page
TB2-12 and TB2-13 TBx-3 and TBx-4 Party Line 1
TB2-14 and TB2-15 TBx-5 and TBx-6 Party Line 2
TB2-16 and TB2-17 TBx-7 and TBx-8 Party Line 3
TB2-18 and TB2-19 TBx-9 and TBx-10 Party Line 4
TB2-20 and TB2-21 TBx-11 and TBx-12 Party Line 5
Refer to the manual for the custom
TBx-13 and TBx-14 Merge
station for terminal block numbers.
x = Applicable zone
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control
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If using GAI-Tronics system cable to connect field stations, terminate the ac power conductors to the
terminal blocks provided at the bottom of the cabinet. Three terminal blocks are provided for each zone.
The ac power conductors are color-coded black (H), white (N), and green (GND).
NOTE: These terminals do not provide power to the field station. The terminals are provided only for
convenience in terminating the system cable power conductors.
Connecting ModelMS05-101 Desktop MasterStations (orequivalent)
1. Locate the Termination PCBA in the lower left corner of the cabinet. See Figure 2.
2. Connect the desktop master station to TB6 in the cabinet. The recommended cable for this
connection is a 9-pair cable.
3. Make the following connections:
Terminals
Master Station Merge/Isolate Cabinet
Function
TB3-23 and TB3-24 TB6-1 and TB6-2 RS-485 data line (+/-)
TB3-25 TB6-3 Data ground
TB1-10 and TB1-11 TB6-5 and TB6-6 Page monitor
TB1-8 and TB1-9 TB6-7 and TB6-8 Page
TB2-12 and TB2-13 TB6-9 and TB6-10 Party Line 1
TB2-14 and TB2-15 TB6-11 and TB6-12 Party Line 2
TB2-16 and TB2-17 TB6-13 and TB6-14 Party Line 3
TB2-18 and TB2-19 TB6-15 and TB6-16 Party Line 4
TB2-20 and TB2-21 TB6-17 and TB6-18 Party Line 5
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Master I/O Controller Switch Settings
The Master I/O Controller contains two hex switches labeled ADDRESS ID on the cover. Refer to
Figure 3. These switches must be set to identify the number of master stations in the system. This
setting is critical to ensure the Master I/O Controller recognizes the commands from all the master
stations. Up to eight master stations can be parallel-connected to the M/I cabinet.
Switches S1 and S2 are used to set the number of master stations in the system. The switch setting is
read as a hexadecimal number. Switch S1 is the LO address and switch S2 is HI address.
Switch Setting Examples
SwitchS2Switch
S1
Number of
Master Stations
0 1 1
0 2 2
0 3 3
0 4 4
0 5 5
0 6 6
0 7 7
0 8 8
NOTE: The switch setting is recognized only when either the Master I/O Controller is powered up, or
when the RESET button is pressed. Momentarily press the RESET button each time a switch is changed.
The RESET button located next to the ADDRRESS ID switches.
DIP Switch Settings
The Master I/O controller switch S4 is an 8-position DIP switch that is used to set the data baud rate.
This switch is factory set and should not be changed. To access the DIP switch, the cover must be
removed from the I/O controller. If replacing the Master I/O controller, be sure to set the switch as
follows:
Switch Position Open/Close Switch Position Open/Close
S4-1 Open S4-5 Open
S4-2 Open S4-6 Open
S4-3 Open S4-7 Open
S4-4 Open S4-8 Close
Press the RESET switch following any switch changes.
JumperClipSettings
The Master I/O controller has two jumper clips, J6 and J7, which determine the data connection and
operating mode of the module, as follows:
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J6 –is a 3-position jumper that selects either RS-232 or RS-485 data communication. Always select
RS-485 by inserting the shorting clip across pins 2 and 3 on J6.
J7 –is a 3-position jumper that puts the board in programming mode. Always select run mode by
inserting the shorting clip across pins 1 and 2 on J7.
Figure 3. Master I/O Controller Module (Cover removed)
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FaultLightIndicator
The red LED indicator on the Audio Switching PCBA illuminates if data communication is lost to any of
the master stations.
AlarmMode Jumper
At the master I/O controller module, a jumper is pre-installed at the factory between terminals 15 and 16
at TB8. The following describes the modes of operation if the jumper is installed or removed:
Installed (manual alarm routing) –With the jumper installed, any alarm activation at the master or at
an external input will cause the AMI to become active, but the alarm audio will be broadcast only to the
master station(s). This feature allows the master station operator to direct the alarm audio to the zone(s)
affected by the alarm event.
Removed (automatic All-Zone alarm) –If the is jumper removed, any alarm activation at the master or
at an external input will cause the AMI to become active, and also automatically route the alarm audio to
all zones. The master operator can intervene and deselect zone(s) not affected by the alarm event.
Setting Jumpers and Adjustments
LineBalance Adjustment for Page Lines
A line balance adjustment is provided for each zone and the master stations. The line balance adjustment
is factory-set for optimum performance but may need adjustment in some situations. If the line balance
adjustment is set too low, the speaker volume will also be low. If the line balance adjustment is set too
high, the speaker audio will be distorted. To correct low or distorted audio, complete the following
adjustments.
Master Stations
Perform the following steps to properly adjust the line balance assembly:
1. Remove the page line conductors from terminals 7 and 8 on the Termination PCBA. See Figure 2
for terminal block location for the master station.
2. Place an ohmmeter across terminals 7 and 8 on the Termination PCBA.
NOTE: The optimum page line balance is 33 ohms.
3. Adjust potentiometer R15 on the Audio Switching PCBA to achieve 33 ohms on the ohmmeter.
Field Stations
Perform the following steps to properly adjust the line balance assembly for all zones:
1. Remove the zone page line conductors from terminals 1 and 2 on the Termination PCBA. See Figure
2 for the terminal block location for each zone.
2. Place an ohmmeter across terminals 1 and 2 on the Termination PCBA.
NOTE: The optimum page line balance is 33 ohms.
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