Bosch EVX-2ZA Installation Manual
EVX-4Z / EVX-2ZA
ZONE SPLITTER
The EVX-4Z / EVX-2ZA are modules intended for use with the EVAX 25/50. Their purpose is to enable the output of the
EVAX 25/50 to be split into multiple zones for paging and alarm selection. The modules accept input from the EVAX 25/50
speaker output and utilizing selectable output relays distribute the output to the individual zones. The modules may be
cascaded to increase the number of zones. The modules provide supervision of the individual zones for either open or
short conditions. Indicator LEDs display active or fault condition for the individual zones. Fault condition is reported to the
FACP through the same supervisory path as the EVAX 25/50. Zones may be selected manually by switches or through
pull-down inputs. In the event of an alarm condition, module defaults to an All-Call. All-Call feature may only be
overridden if accompanying panel has zone control features.
OPERATION
In normal standby the EVX-4Z / EVX-2ZA will supervise each speaker zone wire loop. The EVX-4Z / EVX-2ZA will provide
Style Y and Style Z supervision respectively. Upon an open or short condition the Yellow LED for that zone will light. A
N.C. relay contact will open to present a corresponding fault to the FACP providing supervision to the EVAX 25/50.
To manually select a zone, the corresponding switch is set in the Active position. It’s Red LED will light, and it’s output
relay activation will be enabled. On activation of the PTT signal from the EVAX 25/50, the output relay will connect the
zone to the EVAX 25/50 speaker output. While the zone is selected, supervision is suspended. DO NOT leave zones in
this condition unattended.
In alarm condition the EVX-4Z / EVX-2ZA defaults to an All-Call. On activation of the EVAX 25/50 V+ Alarm output, all
zones are automatically selected, enabling evac tone and message to play. Modules will have field selectable option for
alarm zone activation only if the FACP has the ability to provide separate pull-down inputs.
Each zone is limited to no more than 20W and total speaker load is not to exceed output rating of the EVAX 25/50. Upon
a short condition, a PTC on the zone will open excluding that zone from output and enable the other zones to continue
operating. Once short is removed, speaker line must be disconnected for 30 seconds to reset the PTC. Speaker output
may be 25/50 or 70 VRMS selected by a jumper position.
Speaker Output
TB1:
Ter. 1 - 8 Speaker Output 25/70 VRMS
15W Max speaker load per zone.
TB2:
Ter. 1 & 2 - Speaker Input
Ter. 3 - PTT (Push To Talk signal)
Ter . 4 - V+ (24V DC 0.10A)
Ter . 5 - Alarm Active
Ter . 6 - Circuit Negative
Ter. 7 / 8 / 9 - Aux. Trouble Relay
7 - N.O. / 8 - C / 9 - N.C.
Contact Ratings: 1A @30VDC
Connect to Resistive Load, Class II Power or Power
Limited Sources Only. Interconnected Equipment
Must be in Same Room and Mounted Within 20'.
Ter. 10 & 11 - Supv. Circuit Input
1
2
3
4
5
6
7
8
9
10
11
ZONE 1
+ - + - + - + -
TB2
ZONE 2 ZONE 3 ZONE 4
2ZA - ZONE 1
RETURN
TB1
3
JP1
2
1
2ZA - ZONE 2
RETURN
S1
S2
S3
SWITCHES:
S1 - S4 - Zone select switch
S5 - ALL CALL select
JUMPERS:
JP1 1-2 Short - Audio Enabled
2-3 Short - Audio Disabled
J1 - ALL CALL on Alarm Active
Remove J1 for Alarm by Zone
Activation
TB3:
Ter. 1& 2 - EOLR / Supv Out
Ter. 3 - 7 - Aux. Zone Activate
(Pull Down)
3 - ALL CALL / 4 - Zone 4
5 - Zone 3 / 6 - Zone 2 7 -Zone 1
J1
TB3
1 2 3 4 5 6 7
S4
S5
SPECIFICATIONS:
Power: 24 VDC
0.045A Standby
0.130A ALL CALL Active
P/N 1-5010 REV. C
EVX-4Z
ZONE SPLITTER
TYPICAL WIRING DIAG.
SUPERVISED
ZONE 1
SIG
CKT
POWER
SUPERVISED
TB1
TB3
EVAX 25/50
SUPV
OUT
SPKR
SET
EOLR
SUPERVISED
TB2
PTT
V+
V+
ALARM
CKT
NEG
SUPERVISED
SPKR
NON-SUPERVISED
1
2 345 6
1
R
TB2
TB2
EOL
2
3
4
5
EVX-4Z
6
7
8
9
10
11
FACP
EOLR
1234567
EOLR
TB1
TB1
7
TB3
NON-SUPERVISED
ZONE 2
ZONE 3
ZONE 4
8
Class "B"
(Style Y)
Wiring
SUPERVISED
SPEAKER
CONNECTION
Break wire run to maintain supervision
Do not loop wire around speaker terminals
ZONE 1
ZONE 2
ZONE 3
ZONE 4
REMOTE
ACTIVATION
(PULL-DOWN)
ALL CALL
EO
10K
LR
FROM
EVAX 25/50
EVX-2ZA
ZONE SPLITTER
MULTIPLE UNIT
TYPICAL WIRING DIAG.
1
312
4 567
TB1
TB2
2
3
4
5
EVX-2ZA
6
7
8
9
10
11
TB3
1
2 3
4
7
5 6
SUPERVISED
Class "A"
ZONE 1
(Style Z)
Wiring
ZONE 2
10K
EOLR
8
1
2 345 6
TB1
1
R
L
TB2
O
E
2
3
4
5
EVX-2ZA
6
7
8
9
10
11
FACP
EOLR
1
2 345 6
EOLR
All wiring shown is Power Limited
Installer must insure that wiring and devices installed in the
system meet the current National Electrical Code, NFPA 70 and all
applicable state and local building code requirements.
For all field wiring, use FPL, FPLR or FPLP as required
per NFPA 70, Article 760.
10K
EOLR
8
TB3
7
7
SPEAKER
CONNECTION
Break wire run to maintain supervision
Do not loop wire around speaker terminals
Additional units may be daisy chained in the same fashion.
Insure that EOLRs are installed at last
Zone Splitter to maintain supervision.
SOUND SOLUTIONS
SYSTEMS
TECH SUPPORT
888-382-9835
33 Chestnut St. New Haven, CT 06511
(203) 752-1806 FAX 752-1906
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