Toa SV-200MA - Manual

SV-200MA SURVEILLANCE 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]
Pin No. Signal Name IN/OUT Logic/Signal * 3 Function/Status
Short Selection of Zone 5 is canceled by external equipment.* 2
16 ZONE 5
INPUT
High (24 V) Zone 5 is activated.
OUTPUT
Low (0 V) Zone 5 is not activated.
Short Selection of Zone 4 is canceled by external equipment.* 2
17 ZONE 4
INPUT
High (24 V) Zone 4 is activated.
OUTPUT
Low (0 V) Zone 4 is not activated.
INPUT Short Selection of Zone 3 is canceled by external equipment.* 2
18 ZONE 3 High (24 V) Zone 3 is activated.
OUTPUT
Low (0 V) Zone 3 is not activated.
INPUT Short Selection of Zone 2 is canceled by external equipment.* 2
19 ZONE 2
OUTPUT
High (24 V) Zone 2 is activated.
Low (0 V) Zone 2 is not activated.
INPUT Short Selection of Zone 1 is canceled by external equipment.* 2
20 ZONE 1
OUTPUT
High (24 V) Zone 1 is activated.
Low (0 V) Zone 1 is not activated.
INPUT Short Internal Zone Attenuator Bypass is canceled by external equipment.* 2
21 RY_INTATT
OUTPUT
High (24 V) The internal Zone Attenuators are bypassed.
Low (0 V) The internal Zone Attenuators are not bypassed.
INPUT Short Activated external SP Input is canceled by external equipment.* 2
22 RY_EXTAMP
OUTPUT
High (24 V) External SP Input is active.
Low (0 V) External SP Input is not active.
PA FAULT LINK
INPUT
Open No amplifier in the system has failed.
15 Short Another amplifier in the system has failed.
OUTPUT Low (0 V) The internal Amplifier has failed.* 1
* 1 The 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.
* 2 The external equipment can access this pin only when the corresponding OUTPUT status is High (24 V).
* 3 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