SC24115 SYSTEMSENSOR [Systemsensor advanced ideas.], SC24115 Datasheet - Page 3

• Manufacturer Part Number: SC24115
• Description: Strobes and Horn Strobes
• Manufacturer: SYSTEMSENSOR [Systemsensor advanced ideas.]

Electrical Specifications
Operating Voltage
24 VDC and FWR
Input Terminals
12 to 18 AWG
Notes:
1. Full Wave Rectified (FWR) voltage is a non-regulated, time-var ying power source that is used on some power supply and panel outputs.
2. The MDL causes a one-volt voltage drop in the notification appliance circuit.
Table 1-A: SpectrAlert Strobe UL Max. Current Draw (mA RMS)
Table 1-C: 24V DC Horn/Strobe UL Max. Current Draw Measurements (mA RMS)
Explanation of Published Voltage, Current, and SPL Specifications
In May 2004 Underwriters Laboratories changed standard
UL 1971 to require that operating current measuremments
are made using RMS (root mean square) instead of peak
or average values. RMS measurements more accurately
predict the power consumption of a device since they take
into account the entire current draw profile including surge,
repetitive surge, and peak values. The published RMS cur-
rent is the maximum operating current of that device within
its operating voltage range. This current maximum may or
may not occur at the endpoints of the voltage range.
Similarly, UL tests the audibility of devices in accordance
with UL 464 by measuring them across the operating volt-
age range to determine the minimum sound pressure level
produced at any particular setting.
Candela Setting
Setting
15/75
Strobe
115
177
15
30
75
95
15/75
115
177
15
30
75
95
16-33V FWR Operating
Electromechanical
1
Current – Strobe
unfiltered
(mA RMS)
107
197
239
298
399
126
225
272
297
512
73
89
68
77
Low Volume
3000 Hz
125
222
270
297
504
73
89
Temporal
16-33V DC Operating
Current – Strobe
Operating Voltage Range
16–33 V
Operating Voltage Range w/Sync•Circuit
Module
17-33 V
Electromechanical
(mA RMS)
113
205
274
325
489
64
78
128
222
271
296
501
2
76
91
High Volume
3000 Hz
128
222
271
296
496
78
92
Table 1-B: Horn UL Max. Current Draw Measurements (mA RMS)
During May 2004, UL also changed the way they list the
voltage range of a device. All 12V products will be listed
between 8 – 17.5V and all 24V products will be listed
between 16 – 33V. Those devices are considered “regulat-
ed”. Any product that does not operate within these ranges
will be listed as a “special application” with its operating
voltage specified on the device.
Notes
1. C urrent draw for strobe-only products is shown in Table 1-A.
2. 2 4VDC 2-wire horn/strobe current draw is shown in Table
3. C urrent draw for other horn/strobe power supplies can be
Temporal
Non-
Temporal
1-C.
calculated by adding the strobe current in Table 1-A to the
horn current in Table 1-B from the chosen settings.
Electromechanical
Low
Volume
High
Volume
Low
Volume
High
Volume
125
219
266
291
491
75
89
Low Volume
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
Electromechanical
3000 Hz Interrupted
U.S. Patent Numbers
6,049,446
6,057,778
D424,465
3000 Hz
125
219
265
290
493
75
90
Non-Temporal
Electromechanical
16-33V (DC)
23
33
53
57
37
32
49
56
131
221
269
292
491
81
96
High Volume
16-33V (FWR)
3000 Hz
23
23
44
40
29
33
49
58
134
222
270
293
496
86
98