Panasonic WR-201E Design Handbook page 32

PRODUCTS
4
WU-ZS001E
Surveillance Unit
WU-ZS001E
PREFACE
This Surveillance Unit is intended for installation on the WA-
MA120N/240N Mixing Power Amplifier (sold separately).
Installation of the Surveillance Unit ensures system reliability
and safety by detection of speaker line failures, as well as
audio signal problems and abnormally high temperatures in
the amplifier.
• Detects and notifies speaker line faults (shorts,
disconnections, grounding), amplifier audio signal
problems, and abnormally high amplifier temperatures.
• A built-in interval timer schedules automatic checks for
speaker line failures at a preset interval.
• Non-stop monitoring for amplifier audio signal problems and
FEATURES
•
Speaker Line Check
• Speaker lines can be checked individually for shorts and
disconnections.
• Overall speaker line check for grounding.
• Speaker line check is performed according to the time
interval setting.
Notification about any faults occurred during the time interval
will not be made at once. See the illustration below for
details.
Next fault detection and notification
Check Check Time
Fault
(n)
(n-1)
Time interval
• Check interval can be set to none, 10 minutes, 60 minutes,
or 24 hours. The factory default setting is 24 hours.
• Execution of speaker line failure detection cancelled during
all-zone announcement.
And it will not be resumed automatically when all-zone
announcement ends.
• Indicators on the front panel of the mixing power amplifier
signal malfunction. Notification of the fault is also sent from
the SURVEILLANCE I/F connector at the same time.
Detection of a short in a speaker line causes automatic cut
off of the line's output.
• CHECK/SETTING switch can be used to execute the
speaker line check or to set the line impedance reference
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abnormally high temperatures, and notifies when
abnormalities are discovered.
• Speaker line failure detection can be executed by Sound
Message Unit scheduler.
• Switch operation allows manual execution of speaker line
check.
• SURVEILLANCE I/F connector supports execution of
speaker line check and acquisition of each fault notification.
• Fault notification from the SURVEILLANCE I/F connector
allows configuration of a system that switches to a backup
amplifier when the power amplifier has a problem.
value. The same setting is also possible from the
SURVEILLANCE I/F connector.
• The Surveillance Unit's indicator and the FAULT indicator on
the front of the mixing power amplifier flash to indicate that
speaker line failure detection is in progress and while the line
impedance reference value is being obtained.
• Detection of a short causes the applicable line to be cut.
• The speaker line check will not be performed during all-zone
announcement.
And when there is no all-zone announcement, it will be
performed as scheduled by the time interval setting.
•
Detection of Amplifier Audio Signal Problems
• Audio output of the amplifier is constantly monitored to
ensure operation is normal.
• Indicators on the front panel of the mixing power amplifier
signal problems. Notification of the problem is also sent from
the SURVEILLANCE I/F connector at the same time.
•
Detection of Abnormally High Amplifier Temperature
• The amplifier is constantly monitored to ensure normal
temperature increase.
• Indicators on the front panel of the mixing power amplifier
signal abnormalities. Notification of the abnormality is also
sent from the SURVEILLANCE I/F connector at the same
time.
MAJOR OPERATING CONTROLS & TERMINALS
Top of Unit
1 CN101 Terminal
2 CN102 Terminal
3 CN103 Terminal
4 CN104 Terminal
5 DIP Switches
DIP Switch Name
Number
1 Fixed settings
2 TIMER1
3 TIMER2
4 MASTER/SLAVE
5 POWER ON CHECK
6 BUS SYNC ENABLE
6 SURVEILLANCE I/F Connector
Pin Number Signal Name
1 ZONE1 SHORT
2 ZONE1 OPEN
3 ZONE2 SHORT
4 ZONE2 OPEN
5 ZONE3 SHORT
6 ZONE3 OPEN
7 Reserved
8 Reserved
9 Reserved
10 Reserved
11 GROUND FAULT
12 PA SIGNAL FAULT
13 CHECKING/SETTING
BUSY
14 REFERENCE ERROR
15 GND
16 PA TEMP FAULT
17 COMM FAULT
18 Reserved
19 Reserved
20 Reserved
21 GND
22 CLOCK ADJ CONT
23 SP LINE REFERENCE
SETTING ACTIVATION
24 SP LINE CHECK
ACTIVATION
25 GND
PRODUCTS
WU-ZS001E
Description Settings Factory
Default
Fixed at factory default setting – ON
Interval timer setting 1 None/10 minutes/ 24 hours
Interval timer setting 2 60minutes/24 hours
Master/slave setting MASTER/SLAVE MASTER
Power on speaker line check setting ON/OFF ON
Speaker line test sync on/off for ON/OFF OFF
multi-amp connection
IN/OUT Signal/Logic Required Action
OUT Active Low Zone 1 speaker line is shorted.
OUT Active Low Zone 1 speaker line is disconnected.
OUT Active Low Zone 2 speaker line is shorted.
OUT Active Low Zone 2 speaker line is disconnected.
OUT Active Low Zone 3 speaker line is shorted.
OUT Active Low Zone 3 speaker line is disconnected.
OUT Active Low Some speaker lines are grounded.
OUT Active Low Power amplifier audio signal is faulty.
OUT Active Low During measurement of the speaker line reference
impedance or during check of the speaker lines.
OUT Active Low The speaker line reference impedance couldn't
be measured successfully.
GND GND
OUT Active Low Power amplifier temperature is faulty.
OUT Active Low Serial Communication is faulty.
GND
IN One-shot make Adjust control of Interval clock
IN One-shot make Measurement of the speaker line reference
impedance (Initial setting) starts.
IN One-shot make Check of the speaker line impedance starts.
GND GND
4
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