Bosch EVX-ZA Installation Manual
EVX-ZA
Class “A” Converter
The EVX-ZA converts 4 Class “B” 2-wire circuits to 4 Class “A” 4 wire circuits. 24VDC power is supplied at TB-7. Speaker or strobe power is applied at TB1 and TB2, and connections for field wiring are provided at TB3, TB4, TB5, and TB6. All wiring is power-limited. Mounts to snaptrack or 5/8” nylon standoffs.
Compatible with 25VRMS or 70VRMS speaker lines. Maximum speaker output 50 watts per circuit. Maximum strobe output 1 amp per circuit.
TB1:
Ter. 1 Class “B” Speaker Input Zone 1, + Ter. 2 Class “B” Speaker Input Zone 1, - Ter. 3 Class “B” Speaker Input Zone 2, + Ter. 4 Class “B” Speaker Input Zone 2, -
TB2:
Ter. 1 Class “B” Speaker Input Zone 3, + Ter. 2 Class “B” Speaker Input Zone 3, - Ter. 3 Class “B” Speaker Input Zone 4, + Ter. 4 Class “B” Speaker Input Zone 4, -
TB7:
Ter. 1 +24VDC in, +
Ter. 2 +24 VDC in, -
TB8:
Ter. 1 +24VDC in, +
Ter. 2 +24 VDC in, -
SPECIFICATIONS:
Power: +24VDC in
Current Draw: 38mA Standby 48mA Active
Fig.1
Board
TB3 |
TB4 |
TB5 |
TB6 |
TB7 |
TB1 |
TB2 |
TB8 |
TB3:
Ter. 1 Class “A” Speaker Output Zone 1, + Ter. 2 Class “A” Speaker Output Zone 1, -
Ter. 3 Class “A” Speaker Output Zone 1, + Return Ter. 4 Class “A” Speaker Output Zone 1, - Return
TB4:
Ter. 1 Class “A” Speaker Output Zone 2, + Ter. 2 Class “A” Speaker Output Zone 2, -
Ter. 3 Class “A” Speaker Output Zone 2, + Return Ter. 4 Class “A” Speaker Output Zone 2, - Return
TB5:
Ter. 1 Class “A” Speaker Output Zone 3, + Ter. 2 Class “A” Speaker Output Zone 3, -
Ter. 3 Class “A” Speaker Output Zone 3, + Return Ter. 4 Class “A” Speaker Output Zone 3, - Return
TB6:
Ter. 1 Class “A” Speaker Output Zone 4, + Ter. 2 Class “A” Speaker Output Zone 4, -
Ter. 3 Class “A” Speaker Output Zone 4, + Return Ter. 4 Class “A” Speaker Output Zone 4, - Return
*Standoff mounting must utilize 5/8” nylon standoff |
P/N 1-5060 REV. B |
Fig.2
Typical connection detail
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10K |
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10K |
EOLR |
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EOLR |
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TB3 |
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TB4 |
TB5 |
TB6 |
EVX-ZA
TB7 |
TB1 |
TB2 |
TB8 |
+ -
+24VDC In
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TB1 |
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TB2 |
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JP1 |
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S2 |
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EVX-4Z |
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S3 |
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S4 |
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J1 |
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TB3 |
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S5 |
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1 2 3 4 5 |
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- +
+24VDC out to additional
EVX-ZA units
33 Chestnut St. New Haven, CT 06511
(203) 752-1806 FAX 752-1906
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