wheelock MZC-144 INSTALLATION INSTRUCTIONS
273 Branchport Ave.
Long Branch, N.J. 07740
(800) 631-2148 Thank you for using our products.
www.wheelockinc.com
INSTALLATION INSTRUCTIONS
MODEL MZC-144
MODULAR ZONE CONTROL (3 ZONES EXPANDABLE TO 12 ZONES)
- AND -
MODEL MZEM-3 ZONE EXPANSION MODULE (3 ZONES)
-AND-
MODEL TBM TALK-BACK MODULE
-AND-
MODEL MZC-RM MODULAR ZONE CONTROL RELAY MODULE
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
NOTE
: All
CAUTIONS
and
WARNINGS
are identified by the symbol. All warnings are printed in bold capital letters.
APPLICATION INFORMATION
1.
:
The Modular Zone Control (MZC-144) is an expandable Zone Control that performs the central control, switching and signaling
required to provide selective Zone Paging, Fixed Group Paging, Logical Zone Group, All Call, Background Music Mute, and
Page Alert Tone Signaling. The MZC-144 provides 3 separate zones of paging, and can be expanded to 12 zones by installing
up to 3 Modular Zone Expansion Modules (MZEM-3). Each MZEM-3 provides a zone group consisting of 3 zones. Each
MZEM-3 provides a background music input for its 3 zone group. The Modular Zone Control Relay Module (MZC-RM)
provides relay operation of the 3 zones in a fixed group.
The MZC-144 can be combined in a master/remote arrangement to create up to 144 zones of paging and relay control. This is
accomplished by using the MZC-CAB cable to daisy chain units together. When the system reaches more than 5 remote units
(72 Zones) a MZC-BOOSTER is required to connect the 5
th
remote unit to the 6th remote unit.
With the optional (centralized) Talk-Back control circuit installed, the MZC-144 can be programmed to accommodate both One
Way and Talk-Back paging zones. It can also be programmed to be used with a wide variety of system amplifier configurations,
which can include various combinations of 25V/70V/100V central and zone amplifiers and amplified One Way paging speakers.
The MZC-RM provides relay operation of the three (3) zones in a fixed group. The module is capable of either latching or non-
latching operation. Two (2) with Form C contacts and one (1) of either a Normally Open (NO) or Normally Closed (NC)
contact. The MZC-RM can be inserted into the MZC-144 in three (3) different locations. This optional module has been
designed to work with the MZC-144. The MZC-RM will only allow single zone (relay) activation. Through the use of logical
zone groups, the MZC-144 can activate multiple relays during activation of the MZC-RM. Logical zone groups, which can be
up to five (5) entries, are defined by the user. When logical zone groups are programmed for use by the MZC-RM, only single
zone access codes may be used. Fixed zone group and all call activation will cause no change to the status of the relay outputs.
The MZC-144 is compatible with most EKSU, KSU (1A2), and PBX telephone systems. It connects to either an unused loop
start CO port or a 600 ohm low power audio page port. When connected to an unused CO port, DTMF telephones may be used
to operate the MZC-144. When connected to a page port, the page port must provide a dry contact closure and transmit DTMF
tones.
NOTE: The MZC-144 is not designed for connection to an analog port.
Paging is accessed from any telephone by pressing the CO line button (EKSU & KSU), or dialing the number assigned to
paging. Twelve (12) individual zones are selected by dialing 001 thru 012. All Call is selected by dialing 000. The four (4)
zone groups are selected for group paging, by dialing 201 thru 204.
When any Zone, Fixed Zone Group, Logical Zone Group or All Call selection is made, a page alert tone will be heard at all the
speakers in the selected zone. The tone will also be heard at the paging telephone to provide verification of connection to the
selected speakers.
The MZC-144 provides one Fixed Zone Group (3 zones) and can be expanded to 4 Fixed Zone Groups (12 zones), by adding up
to 3 plug-in MZEM-3 expansion modules as shown in Table 1 and Figure 1.
Copyright 1996, 1997, 1998, 2000, 2003 Wheelock Inc. All rights reserved.
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Sheet 1 of 26
Table 1: Zone Groups
Group Zones Qty. of MZEM-3
1 1, 2, 3 0
2 4, 5, 6 1
3 7, 8, 9 2
4 10, 11, 12 3
Group one (1) of every MZC-144 will always be audio. Groups 2, 3, 4 of each MZC-144 can be audio or a relay (contact closure).
For audio operation use MZEM-3, for relay operation use MZC-RM for each additional zone group.
. INTERFACE INFORMATION:
2
The MZC-144 can be connected directly to:
1. A telephone for stand alone paging.
2. A telephone system's unused CO line/trunk port.
3. A telephone system's 600 ohm audio page port (See Figure 12, page 19).
Figure 1 shows the MZC-144 PC Board which includes a built-in zone group 1 (Zones 1, 2, & 3), and illustrates the positions for the
optional MZEM-3, MZC-RM and Talk-Back Module (TBM).
CAUTION: Plugging any Expansion Module in backwards will result in improper operation and failure of the unit.
Figure: 1
PC Board Position of Optional Talk-Back board, Optional MZEM-3 Modules and MZC-RM Modules
P83208
R1
J12
SW1
R7
R3
R1
P83206
P83206
P83206
J8
K1
J11
8
7
6
5
4
P83198
3
2
1
TB1
J10
8
7
6
5
4
3
2
1
TB1
8
7
6
5
4
3
2
1
TB1
AIM ARROW
CONNECTORS
TOWARDS GOLD
SW2
42 3
O1N
42 3
O1N
AIM ARROW
CONNECTORS
TOWARDS GOLD
42 3
O1N
SW2
AIM ARROW
CONNECTORS
TOWARDS GOLD
SW2
P83259 H
Sheet 2 of 26
• Each zone may be accessed
individually by dialing 001 thru
012.
• All zones can be accessed
simultaneously for an all call by
dialing 000. Each 3 zone group
(Fixed Zone Group) can be
accessed by dialing 201 thru 204.
• Table 2 illustrates the three digit
dial access codes. Logical Zone
Groups are also available and are
accessed by 301 thru 325. Logical
Zone Groups are programmed by
you and contain the zones you want
in a group. This feature is
explained later in the manual under
“Programming Instructions” on
page 23.
To Access Dial
All Zones (All Call) 000
Zone 1 001
Zone 2 002
Zone 3 003
Zone 4 004
Zone 5 005
Zone 6 006
Zone 7 007
Zone 8 008
Zone 9 009
Zone 10 010
Zone 11 011
Zone 12 012
Zone Group 1 (Zones 1, 2 & 3) 201
Zone Group 2 (Zones 4, 5 & 6) 202
Zone Group 3 (Zones 7, 8 & 9) 203
Zone Group 4 (Zones 10, 11 & 12) 204
Table 2: Dial Access Codes
3. AUDIO CONFIGURATION DESCRIPTIONS:
The amplifier type (central or zone) is configured for each zone group as described in Table 3.
Table 3: Amplifier Type Group Configuration Function
Group Function Choices - Per Group
Amplifier Type
1. Central Amplifier:
25V/70V/100V audio output switched to One
Way and/or Talk-Back speakers with line
matching transformers.
2. Zone Amplifier:
600 ohm audio input switched to separate
zone amplifiers connected to One Way
paging speakers with 25V/70V/100V line
matching transformers; or switched to PRM150 line preamplifiers or connected to One
Way paging speaker amplifiers.
If any of the zone groups require central amplification, then the choice of one or two central amplifiers is configured for each of
those groups, as described in Table 4.
Table 4: 1 or 2 Central Amplifiers Group Configuration Function
Group Function Choices - Per Group
1 or 2 Central
Amplifiers
1. One central amplifier for both paging and
background music. Paging in any zone will
mute music in all zones.
2. Two central amplifiers, one for paging and
one for background music. For One Way
paging, music is muted only in the zone
paged. For Talk-Back paging, music is muted
in all zones.
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Sheet 3 of 26
The speech direction function is configured on a per zone basis, as described in Table 5.
Table 5:
Speech Direction Zone Configuration Function
Function Choices - Per Zone
Speech 1. One Way paging.
Direction 2. Talk-Back (optional two-way communication with
hands-free reply).
NOTE: Talk-Back may be chosen only for zones within central amplifier groups and requires the optional Talk-Back module
(TBM).
The MZC-144 has Talk Battery output function for stand alone telephone, unused CO line/trunk port, and 600 ohm audio page
port.
Depending upon system amplifier configuration, the amplifier functions and background music mute operation will vary, as
shown in Table 6.
Table 6:
Amplifier Configurations, Functions, and Music Mute Operation
Amplifier Configuration Function Music Mute Operation
(A) One (1) Central Amplifier Paging & Music Paging any zone will mute
music in all zones.
(B) Two (2) Central Amplifiers One for Paging
and
Music is muted only in the
paged zone(s).
One for Music
(C) Zone Amplifiers,
Line Preamplifiers
Paging & Music
Music is muted only in the
paged zone(s).
Speaker Amplifiers
(D) Mixed
(A) & (C) Above
Paging & Music
1. Central Amplifier Zones:
Paging mutes music in all
zones.
2. Zone Amplifier Zones:
Music is muted only in the
paged zone(s).
(E) Mixed
(B) & (C) Above
Paging & Music Music is muted only in the
paged zone(s).
NOTES
1. The optional Talk-Back function is centrally controlled in the MZC-144, and can be selected
per zone for configurations (A) and (B), as well as the (A) and (B) segments of mixed systems
(D) and (E).
2. Mixed amplifier configurations (D) and (E) cannot be applied within the same zone group.
3. When 2 central amplifiers are used, music will be muted in all zones only when a Talk-Back
Zone is accessed.
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Sheet 4 of 26
4. APPLICATION DIAGRAMS
:
The following application diagrams show the seven basic system configurations of the MZC-144 and its companion MZEM-3.
All of these configurations are possible with the appropriate configured switch selections. Figures 2, 3, 4, and 5 are typical
configurations using central amplifiers. Figure 6 is a typical configuration using amplified speakers. Figures 7 and 8 are typical
configurations using zone amplifiers.
Figure 2:
One Central Amplifier which has music mute, page input and music input.
(One Way Paging and/or Optional Talk-Back)
In this application, the one central amplifier for both paging and background music has music muting and separate inputs
(volume controls) for paging and music. The system uses speakers with built-in line matching transformers for both One Way
paging, and paging with optional Talk-Back.
FROM TELEPHONE *
SYSTEM
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 1
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 12
BACKGROUND
MUSIC
SOURCE
(SEE NOTE)
A
CENTRAL
(PAGING & BACKGROUND MUSIC)
AMPLIFIER
W/MUSIC MUTE
24VDC
POWER
SUPPLY
25V/70V/100V
+
-
GND (+)
(-) 24VDC
AMP. 1
OUT
AMP. 1
IN
MZC-144
MZEM-3
MZEM-3
MZEM-3
GROUP 1
#1
GROUP 2
#2
GROUP 3
#3
GROUP 4
MUSIC
ZONE 1
ZONE 2
ZONE 3
MUSIC
ZONE 4
ZONE 5
ZONE 6
MUSIC
ZONE 7
ZONE 8
ZONE 9
MUSIC
ZONE 10
ZONE 11
ZONE 12
* NOTE: Use Tip CO and Ring CO for stand alone telephone, unused CO line/trunk port, or 600 ohm audio page port connections.
NOTES:
1. If the central amplifier does not provide music mute, then the background music source is connected as shown in Figure 3.
2. In systems with optional Talk-Back paging, install one background music source only as shown. DO NOT connect
background music source directly to zone group music inputs as improper operation may result.
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Sheet 5 of 26
Figure 3:
One Central Amplifier which does not have music mute, and which has only one input.
(One Way Paging and/or Optional Talk-Back)
In this application, the one central amplifier for both paging and background music does not provide music muting, and has only
one input (one, or no volume control). The system uses speakers with built-in line matching transformers for both One Way
paging, and paging with optional Talk-Back.
FROM TELEPHONE *
SYSTEM
24VDC
POWER
SUPPLY
BACKGROUND
MUSIC
SOURCE
OPTIONAL
PRM-150
PREAMPLIFIER
(SEE NOTE 1)
25V/70V/100V
A
CENTRAL
BACKGROUND MUSIC)
AMPLIFIER
(PAGING AND
+
-
P
GND (+)
(-) 24VDC
LINE MUSIC IN
AMP. 1
OUT
AMP. 1
IN
MZC-144
MZEM-3
MZEM-3
MZEM-3
GROUP 1
#1
GROUP 2
#2
GROUP 3
#3
GROUP 4
MUSIC
ZONE 1
ZONE 2
ZONE 3
MUSIC
ZONE 4
ZONE 5
ZONE 6
MUSIC
ZONE 7
ZONE 8
ZONE 9
MUSIC
ZONE 10
ZONE 11
ZONE 12
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 1
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 12
*NOTE: Use Tip CO and Ring CO for stand alone telephone, unused CO line/trunk port, or 600 ohm audio page port
connections.
NOTES:
1. If the background music source has no volume control, then the optional PRM-150 must be connected between the
background music source and the MZC-144 music input, as shown.
2. In systems with optional Talk-Back paging, install one background music source only as shown. DO NOT connect
background music source directly to zone group music inputs as improper operation may result.
P83259 H
Sheet 6 of 26
Figure 4:
Two Central Amplifiers, one for paging and one for background music.
(One Way Paging Only)
In this application, two central amplifiers are used, one for paging and one for background music. The system uses speakers
with built-in line matching transformers for One Way paging.
OPTIONAL
PRM-150
PREAMPLIFIER
(SEE NOTE 1)
P
BACKGROUND
MUSIC
SOURCE
(SEE NOTE 2)
CENTRAL
24VDC
POWER
SUPPLY
A
AMPLIFIER
(PAGING)
+
-
25V/70V/100V
FROM TELEPHONE *
SYSTEM
GND (+)
(-) 24VDC
AMP. 1
OUT
AMP. 1
IN
MZC-144
CENTRAL
AMPLIFIER
(MUSIC)
25V/70V/100V
MUSIC
ZONE 1
ZONE 2
ZONE 3
GROUP 1
MUSIC
ZONE 4
ZONE 5
#1
MZEM-3
MZEM-3
MZEM-3
ZONE 6
GROUP 2
MUSIC
ZONE 7
ZONE 8
ZONE 9
#2
GROUP 3
MUSIC
ZONE 10
ZONE 11
#3
ZONE 12
GROUP 4
A
TYPICAL SPEAKER
WITH TRANSF ORMER
ZONE 1
TYPICAL SPEAKER
WITH TRANSF ORMER
ZONE 12
*NOTE: Use Tip CO and Ring CO for stand alone telephone, unused CO line/trunk port, or 600 ohm audio page port
connections.
NOTES:
1. If both the music central amplifier and the background music source have no volume controls, then a PRM-150 must be
connected between the background music source output and the music central amplifiers input.
2. Different music sources, each with its associated music amplifier (and optional PRM-150 as required), can be used for
different zone groups.
Sheet 7 of 26
P83259 H
Figure 5:
Two Central Amplifiers, one for paging and one for background music.
(One Way and/or Optional Talk-Back Paging)
In this application, two central amplifiers are used, one for paging and one for background music. The system uses speakers
with built-in line matching transformers for both One Way paging, and paging with optional Talk-Back.
FROM TELEPHONE *
SYSTEM
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 1
TYPICAL SPEAKER
WITH TRANSFORMER
ZONE 12
BACKGROUND
MUSIC
SOURCE
(SEE NOTE 2)
CENTRAL
24VDC
POWER
SUPPLY
25V/70V/100V
A
AMPLIFIER
(PAGING)
PREAMPLIFIER
(SEE NOTE 1)
P
A
CENTRAL
(MUSIC)
25V/70V
+
-
OPTIONAL
PRM-150
AMPLIFIER
GND (+)
(-) 24VDC
AMP. 1
OUT
AMP. 1
IN
LINE MUSIC
IN
LINE MUSIC
OUT
MZC-144
MUSIC
ZONE 1
ZONE 2
GROUP 1
ZONE 3
MUSIC
ZONE 4
ZONE 5
#1
#2
#3
GROUP 2
GROUP 3
GROUP 4
ZONE 6
MUSIC
ZONE 7
ZONE 8
ZONE 9
MUSIC
ZONE 10
ZONE 11
ZONE 12
MZEM-3
MZEM-3
MZEM-3
*NOTE: Use Tip CO and Ring CO for stand alone telephone, unused CO line/trunk port, or 600 ohm audio page port
connections.
NOTES:
1. If both the music central amplifier and the background music source have no volume controls, then a PRM-150 must be
connected between the background music source output and the line music input.
2. In systems with optional Talk-Back paging, install one background music source only as shown. DO NOT connect
background music source directly to zone group music inputs as improper operation may result.
P83259 H
Sheet 8 of 26