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Outputs: Relay or Optically isolated Solid State. Solid State output rating maximum
voltage 47V, ON voltage <1.5V at 50ma. Relay output rating 10A, 277VAC, 24VDC.
Output is fail-safe (assumes detect condition on power failure).
•
Power: /- 20%,1W.
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Tuning: Automatically tunes to proper loop and lead-in with application of power.
•
Inductance range: 20µH to 2000µH with a Q factor greater than 5.
•
Temperature range: -40 C to +80 C.
•
Lead-in length: Up to 5000 ft. with proper lead-in and loop.
•
Lightning and transient protection: Loop inputs will withstand discharge of 2000V from
a 10µF capacitor across the loop connections or from either loop input to ground.
Protection exceeds NEMA specification.
•
Mechanical: Dimensions are 5.5” D x 5.5” H x 2” W excluding connector.
•
Weight: 1 lb.
•
Indicators: Front panel indicators include, Detect – Red, solid during detect and flashing
to indicate extend or delay operation. Fault – Yellow, solid for current or flashing for
historical fault. Fault sequence is related to type of fault sensed.
1 blink and 1 space = Open
2 blinks and 1 space = Short
3 blinks and 1 space = 25% inductance change
Installation
Please use safe operating practices at all times to avoid electrical shock hazards that may
be present in the cabinet.
•
Select presence or pulse, if presence then select long or short.
•
Set frequency and sensitivity switches to the desired positions for the application.
Set sensitivity to the medium range (7 or 8) and work from there.
•
If crosstalk is experienced with an adjacent detector, change the frequency to
allow for the maximum frequency separation between the detector units.
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Summary of Contents for NT11
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