Wheelock ZC-312 Installation Instructions Manual

Modular zone control (3 zones expandable to 12 zones) and zone expansion module (3 zones)

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273 Branchport Avenue
Long Branch, N.J. 07740
(908) 222-6880
FCC REGULATIONS
This equipment complies with Part 68 of the FCC Rules. On the top of this equipment is a label that contains, among other information, the FCC
Registration Number and the Ringer Equivalence Number (REN) for this equipment. You must, upon request provide this information to your telephone
company.
The REN is also useful to determine the quantity of devices that you may connect to your telephone line and still have all of those devices ring when your
telephone number is called. In most, but not all areas, the sum of the REN's of all devices connected to one line should not exceed five (5.0). To be
certain of the number of devices that you may connect to your line, you may want to contact your local telephone company.
Should the equipment cause harm to the telephone network, the telephone company shall, if possible, notify the customer that temporary discontinuance
of service may be required. However, where prior written notice is not possible, the telephone company may temporarily discontinue service without
notice, if such action is necessary under the circumstances. The telephone company may make changes in its communication facilities, equipment and
operations procedures, where such action is reasonably required in the operation of its business and is not inconsistent with the rules and regulations of
the Federal Communications Commission.
Do not attempt to repair or modify this equipment. Repairs to this product will be performed by Wheelock Inc. 273 Branchport Ave, Long Branch, NJ
07740 in accordance with Wheelock Inc.'s published Terms and Conditions of Sale. This equipment should not be used on coin telephone lines.
Connection to party line service is subject to state tariffs.
If trouble is experienced, disconnect this equipment from the telephone line to determine if it is causing the malfunction. If the equipment is determined
to be malfunctioning, its use shall be discontinued until the problem has been corrected.
APPLICATION INFORMATION
WARNING:
ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR OTHER DOCUMENTS
DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR FOR ANY OTHER USE,
INCLUDING DESCRIPTION OF THE PRODUCT'S APPLICATION, OPERATION, INSTALLATION AND TESTING IS USED AT
THE SOLE RISK OF THE USER AND WHEELOCK WILL NOT HAVE ANY LIABILITY FOR SUCH USE.
The ZC-312 is an expandable Zone Control that performs the central control, switching and signaling required to provide selective zone paging, zone
group paging, all call, talkback, background music mute, and page alert tone signaling. The ZC-312 provides 3 separate zones of paging, and can be
expanded to 12 zones by installing up to 3 ZEM-3 Zone Expansion Modules. Each ZEM-3 provides a zone group consisting of 3 zones. Each ZEM-3
provides a background music input for its 3 zone group.
Containing its own (centralized) talkback control circuit, the ZC-312 can be programmed to accommodate both one-way and talkback 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 central
and zone amplifiers and amplified one-way paging speakers.
Copyright 1989, 1990, 1991, 1992, 1993 Wheelock Inc. All rights reserved.
The ZC-312 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, both DTMF and rotary (pulse) dial telephones may be used to operate the ZC-312.
When connected to a page port, the page port must transmit DTMF tones and provide a dry contact closure. The ZC-312 can also be used in "Ring
Start" applications (CO/Centrex, Station Level), when used with the Wheelock TPI-100 Telephone Paging Interface.
INSTALLATION INSTRUCTIONS
MODEL ZC-312
MODULAR ZONE CONTROL
(3 ZONES EXPANDABLE TO 12 ZONES)
- AND -
MODEL ZEM-3
ZONE EXPANSION MODULE
(3 ZONES)
P81982 K
Sheet 1 of 21

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Summary of Contents for Wheelock ZC-312

  • Page 1 Sheet 1 of 21 The ZC-312 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, both DTMF and rotary (pulse) dial telephones may be used to operate the ZC-312.
  • Page 2 (if all call is selected). The tone will also be heard at the paging telephone to provide verification of connection to the selected speakers. The ZC-312 provides one zone group (3 zones) and can be expanded to 4 zone groups (12 zones), by adding up to 3 plug-in ZEM-3 zone expansion modules as shown in Chart 1 and Figure 1.
  • Page 3: Table Of Contents

    Each zone may be accessed individually by dialing 01 thru 12. All zones can be accessed simultaneously for an all call by dialing 00. Each 3 zone group can be accessed by dialing 21 thru 24. Chart 2 illustrates the two digit dial access codes. CHART 2 DIAL ACCESS CODES TO ACCESS...
  • Page 4: Chart

    Talkback may be chosen only for zones within central amplifier groups. P81982 K Sheet 4 of 21 The ZC-312's talk battery output function can be turned "ON" or "OFF" depending upon the paging access source, as shown in Chart 6. CHART 6 TALK BATTERY OUTPUT SYSTEM PROGRAMMABLE FUNCTION...
  • Page 5: Zone

    Additionally, the ZC-312 can be programmed for use with a Wheelock TPI-100 Interface which produces paging from a Station Level, or Centrex line, as shown in Chart 7. CHART 7 TPI-100 INTERFACE FOR STATION LEVEL, CO, OR CENTREX PAGING SYSTEM PROGRAMMABLE FUNCTION...
  • Page 6: Figure

    FIGURE 2 ONE CENTRAL AMPLIFIER WHICH HAS MUSIC MUTE, PAGE INPUT AND MUSIC INPUT (ONE-WAY PAGING AND/OR TALKBACK) 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.
  • Page 7: Zone

    If the background music source has no volume control, then the optional PRM-150 must be connected between the background music source and the ZC-312 MUSIC input, as shown. In systems with talkback paging, install one background music source only as shown. DO NOT connect background music source directly to zone group music inputs.
  • Page 8: Zone

    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.
  • Page 9: Zone

    FIGURE 5 TWO CENTRAL AMPLIFIERS, ONE FOR PAGING AND ONE FOR BACKGROUND MUSIC (ONE-WAY AND/OR TALKBACK 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 talkback.
  • Page 10: Zone

    FIGURE 6 AMPLIFIED SPEAKERS (ONE-WAY PAGING) In this application, amplified speakers are used for one-way paging and for background music. A PRM-150 preamplifier is used with the background music source. NOTE One music source can be used for all zone groups, or different music sources can be used for different zone groups. P81982 K Sheet 10 of 21...
  • Page 11: Zone

    FIGURE 7 ZONE AMPLIFIERS WHICH HAVE MUSIC MUTE, PAGE INPUTS AND MUSIC INPUTS (ONE-WAY PAGING) In this application, the zone amplifiers for both one-way paging and background music have music muting, and separate inputs (volume controls) for paging and music. The system uses speakers with line matching transformers. NOTE One music source may be used for all zones, or different music sources can be used for different zones.
  • Page 12: Zone

    FIGURE 8 ZONE AMPLIFIERS WHICH DO NOT HAVE MUSIC MUTE, AND WHICH HAVE ONE INPUT (ONE-WAY PAGING) In this application, the zone amplifiers for both one-way paging and background music do not provide music muting, and have only one input (with or without volume control).
  • Page 13 MOUNTING INSTRUCTIONS: The ZC-312 is designed for indoor surface wall mounting near the telephone system. Remove the ZC-312 cover from the base (containing the PC Board assembly) by removing the screw on each side of the unit. Two keyholes and two circular holes are provided in the base for easy installation. A...
  • Page 14 diagram for mounting screw hole locations is given in Figure 9. Recommended screw sizes are #6, #8, or #10 screws. Be sure to use mounting hardware suitable for mounting surface. FIGURE 9 MOUNTING DIAGRAM SPECIFICATIONS SUPPLY VOLTAGE (NOMINAL) -24VDC SUPPLY VOLTAGE RANGE -21.6VDC to -26.4VDC ALERT TONE FREQUENCY 1100Hz +/-10%...
  • Page 15: Zone Group 4 (Zones 10, 11

    Dial extension number: For analog station level (Requires TPI-100 interface, see Figure 13). The ZC-312 can switch a TOTAL SYSTEM central amplifier audio input of up to 150W @ 70V, or 100W @ 25V. The TOTAL SYSTEM audio input can be distributed to up to 4 zone groups, provided no single zone group exceeds: (A) 70W @ 70V, leaving 80W for the remaining 3 zone groups.
  • Page 16 Connect the 24VDC power supply to the (-)24V and GND(+) terminals on TB1, terminals 2 and 1 respectively. Connect the zone amplifier, speaker amplifiers, or speakers with transformers to the audio pair for zones 1 thru 12 on TB2 of the ZC-312 and TB1 of each ZEM-3 module as required.
  • Page 17 A. To the "ON" position when connected to a telephone systems, unused CO line/trunk port, 600 ohm audio page port, or directly to a telephone. B. To the "OFF" position when connected to a Wheelock TPI-100 Telephone Paging Interface for CO/Centrex line, or analog station level line paging.
  • Page 18 FIGURE 11 INSTALLATION, PROGRAMMING AND VOLUME ADJUSTMENT DIAGRAM P81982 K Sheet 18 of 21...
  • Page 19 Place talk battery selector switch in the "OFF" position. Place "TPI Interface" selector jumper in the "LO" position. If TPI-100 and ZC-312 use separate power supplies, then install wire between GND (TB1, terminal 5) on TPI-100 and GND (TB1, terminal 5) on ZC-312.
  • Page 20: Limited Warranty

    Limited Warranty Wheelock products must be used within their published specifications and must be PROPERLY specified, applied, installed, operated, maintained and operationally tested in accordance with these instructions at the time of installation and at least twice a year or more often and in accordance with local,...
  • Page 21: Limitation Of Liability

    (as determined by date code). Correction of defects by repair or replacement shall be at Wheelock's sole discretion and shall constitute fulfillment of all obligations under this warranty.

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Zem-3

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