Table 2: Strobe Current Ratings (AMPS)
Voltage
Maximum RMS Current
DC 16-33VDC
0.138
FWR 16-33VRMS
0.222
WARNING: MAKE SURE THAT THE TOTAL RMS CURRENT REQUIRED BY ALL APPLIANCES THAT ARE
CONNECTED TO THE SYSTEM’S PRIMARY AND SECONDARY POWER SOURCES, NAC CIRCUITS, SM, DSM SYNC
MODULES OR COOPER WHEELOCKS POWER SUPPLIES DO NOT EXCEED THE POWER SOURCES’ RATED CAPACITY
OR THE CURRENT RATINGS OF ANY FUSES ON THE CIRCUITS TO WHICH THESE APPLIANCES ARE WIRED.
OVERLOADING POWER SOURCES OR EXCEEDING FUSE RATINGS COULD RESULT IN LOSS OF POWER AND FAILURE
TO ALERT OCCUPANTS DURING AN EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS.
When calculating the total currents: Use Table 2 to determine the highest value of “RMS Current” for an individual strobe (across the
expected operating voltage range of the strobe), then multiply these values by the total number of strobes; be sure to add the currents for any
other appliances, including audible signaling appliances, powered by the same source and include any required safety factors.
If the peak current exceeds the power supplies’ peak capacity, the output voltage provided by the power supplies may drop below the listed
voltage range of the appliances connected to the supply and the voltage may not recover in some types of power supplies. For example, an
auxiliary power supply that lacks filtering at its output stage (either via lack of capacitance and/or lack of battery backup across the output)
may exhibit this characteristic.
CAUTION:
Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.
LIGHT DISTRIBUTION:
A7
A4
A6
A1
A5
A3
A2
Table 3: Candela at Various Angles
Model Rated
Candela
A1
A2
A3
A4
A5 A6/A7
ET70WPA-2475W
56
135 12 12 11 11 6
ET70WPB-2475W
22
54 4.8 4.8 4.5 4.5 1.8
ET70WPG-2475W
33
81 7.2 7.2 6.7 6.7 3.6
ET70WPR-2475W
15
36 3.2 3.2 3.0 3.0 1.6
WIRING INFORMATION:
1.
Field selectable input terminals are provided on each unit. The following wattage selections are available: 1/8W, 1/4W, 1/2W, 1W, 2W,
4W, and 8W. Frequency range of speakers is 400-4000Hz.
2. A
10
µ
F blocking capacitor for DC supervision of audio lines by the FACP is factory wired in series with the speaker input.
Figure 1:
Figure 2:
+ STROBE - COM+
FROM PRECEDING SPEAKER
OR FIRE ALARM
CONTROL PANEL (FACP)
FROM PRECEDING STROBE
APPLIANCE OR SYNC MODULE
TO NEXT APPLIANCE
OR EOLR
TO NEXT SPEAKER
OR END OR LINE RESISTOR
(EOLR)
1. The Low Profile Series ET70WP-2475W Speaker
Strobe model has in-out wiring terminals that accept
two #12 to #18 American Wire Gauge (AWG) wires at
each screw terminal. Strip leads 3/8 inches and connect
to screw terminals.
2. Break all in-out wire runs on supervised circuits to
assure integrity of circuit supervision as shown in Figure
2. The polarity shown in the wiring diagrams is for
operation of the appliances.
* Refer to Sync Module instruction sheets SM (P83123), DSM (P83177)
or Wheelock’s Power Supplies for additional information.
WARNING: THE SPEAKER STROBE APPLIANCE MUST BE FIELD SET TO THE DESIRED dBA SOUND OUTPUT
LEVEL BEFORE IT IS INSTALLED. THIS IS DONE BY PROPERLY INSERTING JUMPER PLUGS IN ACCORDANCE WITH
THESE INSTRUCTIONS. INCORRECT SETTINGS WILL RESULT IN IMPROPER PERFORMANCE, WHICH COULD
RESULT IN PROPERTY DAMAGE AND ERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
Figure 3: Jumper plug is used to select tap settings which = dBA loudness.
Figure 4: Tap Settings (Factory setting is 70V @ 1/2W (H))
P84646 D
Sheet 2 of 5
