Toa SV-200MA User Manual

SV-200MASURVEILLANCE BOARD

INSTALLATION MANUAL

(For qualified service technicians only)

1. GENERAL DESCRIPTION

The SV-200MA Surveillance Board consists of an SV-200M board and an SV extension board to be used in combination. Installing the SV-200MA board inside the VM-2120 or VM-2240 amplifier adds the functions in the following Features section to the existing VM amplifier's functions.

2. FEATURES

• Permits monitoring of individual speaker line or power amplifier failures for status indication. For the SV-200MA's surveillance function, refer to the descriptions about the SV-200M in the VM-2120/2240 instruction manual.

• Enables the VM amplifier to bypass external attenuators on individual zone calls. Individual zone calls on the current VM amplifier do not bypass external attenuators. However, the SV extension board enables the VM amplifier to bypass external attenuators when an individual zone broadcast is made in a 4-wire attenuator system. Either enabling or disabling this function depends on the jumper setting of JP1 on the SV extension board. For setting, refer to Step 2 in the following Installation section.

• Backup amplifier function The SV extension board has a relay for BGM/paging operation with backup amplifier function, which is introduced in Sections 4-5-9 and 4-5-10 of the VM COOK BOOK as a customized relay circuit. So, the additional amplifier normally works as a BGM/paging amplifier and also acts as a backup amplifier when the internal power amplifier fails. Connections between the SV-200MA and the VM amplifier differ depending on whether this function is used or not. For details, refer to Step 6 in the following Installation section.

• Control inputs and outputs corresponding to individual zone selection status Although current VM amplifiers have expandable zone handling capability, the arrangement of speaker lines is fixed (i.e. 5 zones with 120 W or 240 W). The SV extension board permits flexible designs on speaker lines because it outputs control signals corresponding to individual zone selection status. The SV extension board also has control inputs to allow zone selections from external equipment, for Emergency messages, for example.

[Additional pin functions of the Surveillance I/O connector]

*1The VM amplifier whose internal power amplifier has first failed outputs the signal so that the BGM/paging amplifier

changes its current operation to back up the failed amplifier.

The external equipment can access this pin only when the corresponding OUTPUT status is High (24 V).

Input: No-voltage make contact input, open voltage: 24 V DC, short-circuit current: under 60 mA Output: Open collector output, withstand voltage: 24 V DC (used with VM 24 V DC output), control current: under 20 mA

Pin No. Signal Name IN/OUT Logic/Signal *

16 ZONE 5

17 ZONE 4

18 ZONE 3 High (24 V) Zone 3 is activated.

19 ZONE 2

20 ZONE 1

21 RY_INTATT

22 RY_EXTAMP

PA FAULT LINK

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

INPUT

OUTPUT

Open No amplifier in the system has failed. Short

Low (0 V)

Short

High (24 V) Zone 5 is activated.

Low (0 V) Zone 5 is not activated.

Short Selection of Zone 4 is canceled by external equipment.*

High (24 V) Zone 4 is activated.

Low (0 V) Zone 4 is not activated.

Short Selection of Zone 3 is canceled by external equipment.*

Low (0 V) Zone 3 is not activated.

Short

High (24 V) Zone 2 is activated.

Low (0 V) Zone 2 is not activated.

Short

High (24 V) Zone 1 is activated.

Low (0 V) Zone 1 is not activated.

Short

High (24 V) The internal Zone Attenuators are bypassed.

Low (0 V) The internal Zone Attenuators are not bypassed.

Short

High (24 V) External SP Input is active.

Low (0 V) External SP Input is not active.

Another amplifier in the system has failed. The internal Amplifier has failed.* Selection of Zone 5 is canceled by external equipment.*

Selection of Zone 2 is canceled by external equipment.*

Selection of Zone 1 is canceled by external equipment.*

Internal Zone Attenuator Bypass is canceled by external equipment.*

Activated external SP Input is canceled by external equipment.*

Function/Status

3. INSTALLATION

Step 1. Set the DIP switch on the SV-200M board referring to the installation manual for the VM-2120 and

VM-2240.

Step 3. Remove 4 screws on the amplifier rear panel and a

total of 6 screws on the sides to remove the cover.

Step 4. Detach the surveillance I/O blank panel on the

amplifier rear panel by removing 2 fixing snap rivets.

Step 2. JP1 on the SV extension board is a 3-pin jumper

header and its short circuit socket is normally set to A position. If you need to bypass the external attenuator not only on all-zone broadcast but also individual zone broadcast, set the socket to B position.

Note

External attenuator bypass function with individual zone broadcast can be used only with 4-wire attenuators. This function basically cannot be used with BGM/Paging function.

Step 5. Make connections of the supplied flat cables.

5-1 Remove the flat cable connected between the VM

CPU board's CN7 and the VM relay board's CN1001 of the VM amplifier.

5-2 Connect the supplied 2 flat cables to CN7 and to

CN1001, respectively.

[Orientation of the flat cable]

Note

Pay attention to the orientation of the cable so that it's contact face touches the connector's contacts.

Rear: M3 x 6 machine screw

and M3 plain washer ..... 4 pieces

SV-200M board

SV extension board

JP1

Short circuit socket

A position

(Factory-preset)

Side: M4 x 8 machine screw ..... 3 pieces each

B position

VM relay board

Flat cable

Contact face

Contact

On-board connector

Surveillance I/O blank panel

Snap rivet

-1

Remove

CN1001

For VM relay board

CN7

CN6

-2

VM CPU board

Rear panel

Contact face

For VM CPU board

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