ANSZS2A and ANSZS4B Zone Splitter
Installation Sheet
Product description
The ANSZS2A and ANSZS4B Zone Splitter modules are
intended for use with the ANS25, ANS50, and ANS100 Audio
Notification Systems. Their purpose is to enable the output of
the ANS to be split into multiple zones for paging and alarm
selection.
The modules accept input from the ANS speaker output and
use selectable output relays to distribute the output to the
individual zones. The modules can be cascaded to increase
the number of zones.
The modules provide supervision of the individual zones for
open and short conditions. Indicator LEDs display active or
fault conditions for the individual zones. A fault condition is
reported to the FACP through the same supervisory path as
the ANS25, ANS50, or ANS100.
Zones can be selected manually by switches or through pulldown inputs. In the event of an alarm condition, the module
defaults to All Call operation. The All Call feature can only be
overridden if the accompanying panel has zone control
features.
Each zone is limited to no more than 25 W and the total
speaker load must not to exceed the output rating of the ANS.
Speaker output can be set to 25 or 70 Vrms, selected by a
jumper position on the ANS25, ANS50, or ANS100.
Operation
In normal standby, the ANSZS2A and ANSZS4B supervise
each speaker zone wire loop. The ANSZS2A provides Style Y
supervision, and the ANSZS4B provides Style Z supervision.
Caution: Do not leave a zone switch turned on when
unattended, as this leaves the zone unsupervised.
In an alarm state, the ANSZS2A and ANSZS4B default to All
Call operation. On activation of the ANS “Alarm voltage”
output, all zones are automatically selected, and receive the
EVAC tone and message. Modules have a field-selectable
option for alarm zone activation only if the FACP has the ability
to provide separate pull-down inputs.
If a zone has a short fault, a PTC thermistor for the zone
opens, excluding the zone from output and allowing the other
zones to continue operation. Once the short is removed, the
speaker line must be disconnected for 30 seconds to reset the
PTC.
Specifications
Voltage: 24 Vdc
Current
Standby: 45 mA
Active (All Call): 130 mA
Aux. trouble relay (TB2-7, -8, and -9)
Contact rating: 1 A at 30 Vdc (resistive load)
Connections: Restricted to Class II or power-limited
sources. Interconnected equipment is unsupervised so it
must be in the same room and mounted within 20 feet of
the module.
Speaker circuit EOL: 10 kΩ
When an open or short fault is detected in a zone, the yellow
LED for that zone turns on. A NC relay contact opens to
present a corresponding fault signal to the FACP providing
supervision of the ANS.
Ground faults in zone circuits are not reported by the
ANSZS2A or ANSZS4B, but are detected and reported by the
ANS25, ANS50, or ANS100.
To manually select a zone, the operator turns on the
corresponding zone switch. The red LED for the switch lights,
and output relay activation is enabled. On activation of the PTT
signal from the ANS the output relay connects the zone to the
ANS speaker output. While the zone is selected, supervision is
suspended.
© 2013 UTC Fire & Security. All rights reserved. 1 / 4 P/N 3101185 • REV 02 • REB 28FEB13
Features and functions
Terminal
TB1
TB1
TB1
TB1
TB1
TB1
TB1
TB1
TB1
TB2
TB2
TB2
Terminal
TB2
TB2
TB2
TB2
TB2
TB2
TB2
TB2
TB3
TB3
TB3
TB3
TB3
TB3
TB3
TB3
[1] See “
[2] See J1 settings under “Jumpers” for optional zone activation
Switch
S1
S2
S3
S4
S5
Jumper
J1
Installed
Removed
J1
TB1
TB2
TB3
S1
S2
S3
S4
S5
+ + + +
– – – –
1 2
3
4
5
6 8
7
1
2
3
4
5
6
7
8
9
10
11
1 2
34567
2
PTCs
4 6 8
Figure 1 shows the location of the terminal blocks, zone
selection switches, configuration jumpers, and PTCs. This
topic describes the functions of each component.
Figure 1: Features of the ANSZS2A and ANSZS4B cards
Description
-4 24 Vdc power supply +
-5 Alarm active signal
-6 Circuit negative
-7 Aux. trouble relay N.O. [1]
-8 Aux. trouble relay C.
-9 Aux. trouble relay N.C.
-10 Supervisory circuit input
-11 Supervisory circuit input
-1 Supervisory circuit output or EOLR
-2 Supervisory circuit output or EOLR
-3 to 7 Optional zone activation (pull-down) [2]
-3 All Call activation
-4 Zone 4 activation
-5 Zone 3 activation
-6 Zone 2 activation
-7 Zone 1 activation
Specifications” for more information on the Aux. trouble relay
Terminals
Table 1: Terminal descriptions
Description
Speaker output terminals, at either 25 or 70 Vrms, per
PTC setting.
-1 + Zone 1 output Zone 1 output
-2 − Zone 1 output Zone 1 output
-3 + Zone 2 output Zone 1 return
-4 − Zone 2 output Zone 1 return
-5 + Zone 3 output Zone 2 output
-6 − Zone 3 output Zone 2 output
-7 + Zone 4 output Zone 2 return
-8 − Zone 4 output Zone 2 return
-1 Signal source +
-2 Signal source −
-3 PTT (push to talk) signal
ANSZS4B: Output terminals for four zones. (Class B,
Style Z.)
ANSZS2A: Output and return terminals for two zones.
(Class A, Style Y.)
Polarity ANSZS4B ANSZS2A
Switches
Switches S1 through S4 provide manual zone activation when
an operator is in attendance. Switch S5 activates all zones (All
Call) on all interconnected ANSZS2A or ANSZS4B zone
splitters. Switching S5 on any zone splitter generates an all call
for all zone splitters in the system.
Caution: Do not leave a zone switch turned on when
unattended, as this leaves the zone unsupervised.
Table 2: Switch descriptions
Description
Zone 1 activation
Zone 2 activation
Zone 3 activation
Zone 4 activation
All Call activation
Jumpers
Table 3: Jumper settings
Setting
Determines zone activation on alarm active (0 Ω
jumper)
All Call operation on alarm active
Zone-by-zone activation using pull-down inputs on TB3
2 / 4 P/N 3101185 • REV 02 • REB 28FEB13
PTC thermistors
(1) This resistor sets the amplifier end-of-line value only. The
(2)
not loop the wire around the speaker terminal.
ANS25 / 50 / 100
ANSZS4B
FACP
EOLR
SPKR SET
EOLR (1)
POWER
SIG
CKT
SPKR
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ALL CALL
REMOTE ACTIVATION
(PULL-DOWN) INPUTS
ZONE 1
ZONE 2
ZONE 3
ZONE 4
PTT
V+
CKT
NEG
SUPV OUT
SPEAKER
CONNECTION (2)
SUPERVISED
SUPERVISED
SUPERVISED
ALL ZONE SPEAKER
WIRING IS
SUPERVISED
Class B (Style Y) wiring
UNSUPERVISED
UNSUPERVISED
TB1
TB3
TB2
TB3
EOLR
10 kO EOLR
TB2
TB1
1
2
3 4 5
6 7 8
1 2
3 4 5
6 7 8
1
2
3
4
5
6
7
8
9
10
11
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
SIG ACT
1 2
3 4 5
6 7
Figure 1 shows the locations of the PTCs. PTC 2, 4, 6, and 8
provide output protection for speaker zones 1, 2, 3, and 4,
respectively. Each PTC is installed in a socket for easy
replacement.
The ANSZS2A and ANSZS4B are shipped with PTCs for
25 Vrms operation. These are labeled “XF 075.” For 25 Vrms
operation, leave these PTCs installed.
To configure the module for 70 Vrms operation, replace all four
PTCs with the optional PTCs provided. These are labeled
“XF 040.”
Wiring diagrams
Figure 2: ANSZS4B typical wiring
Installation instructions
Ensure that all wiring and devices installed in the system meet
the following standards:
• NFPA 70 National Electrical Code
• NFPA 72 National Fire Alarm and Signaling Code
• NFPA 101 Life Safety Code
• Applicable state and local codes
Install this equipment in a clean, dry environment. Avoid
installation where the equipment could be subjected to
vibration. Remove all electronic assemblies from the enclosure
before drilling or punching the enclosure. Where possible,
make all cable entries from the rear or sides. Before making
any modifications to the enclosure, be certain that they will not
interfere with the assemblies or batteries.
For all field wiring, use FPL, FPLR, or FPLP as required per
NFPA 70, Article 760.
All wiring shown in “Wiring diagrams” is power-limited.
ANSZS2A and ANSZS4B must use 10 kΩ EOLRs.
Break the wire run at each terminal to maintain supervision. Do
P/N 3101185 • REV 02 • REB 28FEB13 3 / 4
Figure 3: ANSZS2A typical wiring for multiple units
(1) Break the wire run at each terminal to maintain supervision. Do
(2)
(3) Additional units can be daisy chained in the same fashion. Ensure
supervision.
SUPERVISED
ANSZS2A
TB3
EOLR
TB2
TB1
1 2
3 4 5
6 78
1
2
3
4
5
6
7
8
9
10
11
1 2
3 4 5 6 7
ANSZS2A
TB3
EOLR
TB2
TB1
1 2
3 4 5
6 78
1
2
3
4
5
6
7
8
9
10
11
1 2
3 4 5 6 7
FROM ANS25,
ANS50, or ANS100
ZONE 1
ZONE 2
SPEAKER
CONNECTION (1)
FACP
EOLR
ALL ZONE SPEAKER
WIRING IS
SUPERVISED
Class A (Style Z) wiring
(2)
(2)
not loop the wire around the speaker terminal.
10 kΩ EOLR
that EOLRs are installed at the last Zone Splitter to maintain
4 / 4 P/N 3101185 • REV 02 • REB 28FEB13
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