Siemens Cerberus Pyrotronics MT-30 User manual

3. Modules are to be bus-connected from right to left.

For two-row enclosures, the modules in the lower

row are to be connected from left to right. Suc-

ceeding rows are to be alternately connected, right

to left, left to right. etc.

4. If a module is the last module in the system, install

either a JS-30 (30 inch long) or JS-64 (64 inch

long) bus connector assembly from the unused

receptacle of the last module to terminal 41* of the

CP-35 control panel. This completes the module

supervision circuit.

5. Wire the terminals as shown in the Typical Wiring

illustration on the back of this sheet.

Troubleshooting

If a trouble condition is indicated in the MT-30, check

the following:

1. Be sure the disconnect switch is returned to

Normal position.

2. If the switch is in Normal position, check for open

in municipal box circuit lines, or box not reset after

a trip condition.

CAUTION

Module will be damaged unless connected to

proper municipal tie box.

Initial Installation: Until proper load is connected,

disconnect terminal 3 and, to maintain supervi-

sion when no load exists, connect resistor (50-

100 ohms) across terrninals 1 and 2.

*Terminal 17 of CP-30

Terminal 15 of CP-31

Operation

The CERBERUS PYROTRONICSTM Model MT-30

Municipal Tie module is designed to activate a local

energy type municipal fire alarm box. It meets the

requirements of NFPA Standard 72 for auxiliary

protective signaling systems. Actuation of the module

is from a suitable alarm output signal such as from a

type TS Two-Stage Module, or from the main control

panel. The MT-30 must be used with an LLM-1.

The module contains solid state circuitry to supply

supervisory and operating power to the municipal fire

alarm box. The circuit is a two-wire closed loop

carrying approximately l0mA DC of supervisory

current. Upon system operation the current is in-

creased, activating the tripping coil in the municipal

fire alarm box; which, in turn, transmits the coded

signal to fire headquarters.

The module, which has built-in surge protection, also

contains a manually operated disconnect switch to

de-energize the municipal tie line when desired or

during system tests. Operation of the switch will

illuminate the yellow LED Disconnect or Trouble

indicator. Trouble will also be indicated from an open

or a tripped municipal box operating coil, or an open

in the municipal tie line. All of these trouble condi-

tions will also operate the system trouble signal.

The LED can be lamp tested from the control panel.

Installation

1. Mount the module to the horizontal mounting

brackets in the control enclosure.

2. Install the Model JA-5 (5 inch long) bus connector

cable assembly between receptacle P2 of the

module and receptacle P1 of the module or control

panel immediately preceding it on the bus.

Note: If the preceding module is on another row in

the enclosure, a JA-24 (24 inch long) bus

connector cable assembly will be required.

P/N 315-021308-5

Operation and Installation Instructions

CERBERUS PYROTRONICSTM

Model MT-30

Municipal Tie Module

Cerberus Division

Siemens Building Technologies, Inc.

8 Fern ood Road

Florham Park, Ne Jersey 07932

Siemens Building Technologies, Ltd.

50 East Pearce Street

Richmond Hill, Ontario L4B 1B7 CN

P/N 315-021308-5

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