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BITE
Indicators
Model MI 57DA
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The MI 57DA series magnetic latching fault
indicator coil is pulsed by a BITE (Built-In Test Equipment)
system. The "clover leaf" pattern provides a high contrast
visual indication and an effective warning of system
faults.
Covered by U.S.
and Foreign Patents.
Cleared by DOD/OFOISR for public release under 00-S-1235
dated April 17, 2000.
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Electrical Reset |
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Magnetic Latching |
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Positive Identification |
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Environmentally Sealed |
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Rear Mount |
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OPERATION
When the indicator coil is energized with a 40 millisecond
(or longer) pulse, the highly visible display disc rotates
and latches to the magnetic core. The display disc will
remain magnetically latched to the core in the position
last pulsed. Even if the fault signal is removed, the
indicator will "remember" that a fault had occurred.
Return to the "No-Fault"
position is accomplished electronically by pulsing a
separate internal coil.
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| Standard
Coil Voltages and Resistances |
Nominal
Voltage DC |
Operating
Voltage
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DC
Coil Resistance
in Ohms, ±10% @ 25°C |
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Min
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Max
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3.0
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2.4
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3.6
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9.0
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5.0
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4.0
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6.0
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22.0
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6.0
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4.8
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7.2
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37.0
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12.0
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9.6
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14.4
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145.0
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24.0
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19.2
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28.0
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600.0
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28.0
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22.4
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30.0
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800.0
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Pulse Power: One watt, nominal |
| Pulse
Length: 40 milliseconds, minimum. |
| Dielectric
Withstanding Voltage: 500 VAC RMS |
| Insulation
Resistance: 100 megohms at 500 VDC |
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| Case:
Aluminum, black anodized. Gold also available. |
| Mounting:
Front panel mount (D-hole or keyed washer). |
| Weight:
10 grams |
| Display
Colors: "NO FAULT" is black, "FAULT" is black/
white, as shown. Other colors available. |
Leads:
WL - Eight inches of #26 AWG Teflon
insulated stranded wire
LT
- Loop terminals
TT
- Turret Terminals |
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| Operating
Temperature Range: -65°C to +125°C. |
| Vibrational: |
Sinusoidal:
.06" D.A. or 20 G Peak, which ever is less, 10 Hz
to 2 KHz per
MIL
STD 202, Method 204, Test Condition D. |
| Random:
11.6 G's per MIL STD 202, Method 214, Test Condition
D, Curve 1. |
| Shock:
100 G's MIL STD 202, Method 213, Test Condition
I. |
| Moisture
Resistance: (Humidity): MIL STD 202, Method
106. |
| Thermal
Shock: MIL STD 202, Method 107, Test Condition
B. |
| Salt
Spray: MIL STD 202, Method 101, Test Condition
B. |
| Barometric
Pressure: MIL STD 202, Method 105, Test Condition
D, with 350 Volts RMS. *During vibration testing,
caution should be taken to shield the indicator
from the strong magnetic field. |
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Life: 100,000 cycles at cycling rate of 10
per minute. Optional:
RFI panel shielding available. |
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When ordering,
show model number first, then coil voltage desired,
then the color combination desired. If this is a special
part, factory modification number will be added at the
end of the ordering number.
Example:
Basic model with front panel threaded case for
12 volts with white as set color and black as reset
color would be Model MI 57DA-12-W/BLK-LT.
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MI
57DA - 12 - B/W
/ BLK - LT- S
Basic
Model
Number |
Coil
Voltage |
Fault
or Set
Color |
No-Fault or Reset
Color |
Terminal
Type |
Factory
Modification
Number if Special |
| MI
57DA |
12
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W
White
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BLK
Black
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LT
-Loop Terminals
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S.+
ID No.
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WL-Wire
Leads
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TT-Turret
Terminals
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Note: Dim. in ( ) are mm. Tolerances:
Decimals: ± .010 (0,25), Fractions:± 1/64 —
All mounting hardware is black anodized aluminum. Mounting
Torque: 5-7 in. lbs.
| This
PDF contains a printable version of the hard copy
catalog page. |
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L-3-EDI
MI 57DA.pdf |
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Note: Viewing and printing PDF files requires the
free Adobe Acrobat Reader program. You can download
Acrobat Reader from Adobe's
web site. |
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