NorthStar NP2 User manual

Single Channel - Dual Relay Vehicle Detector
Model NP2 Features:
• 10 selectable Sensitivities
• 4 selectable Frequencies
• Wrong voltage protection
• Output Timing – Extend & Delay
• Selectable Presence times
• Selectable Pulse lengths
• Separate Power, Detect and
Fault Indicators
• Automatic Sensitivity Boost
• Available in: 240VAC, 120VAC,
24VAC, 24VDC or 12VDC
The NP2 has been specifically designed and engineered for use in the Parking/Access
Control industries. With standard operations including programmable pulse and
presence options, fail-safe or fail-secure operation, compatibility with all radio controls,
timing features and more, the NP2 covers your detection needs.
The NP2’s wide inductance range allows for use with small loops sometimes found in
the Parking/Access Control industries (for recommended loop sizes please consult the
Northstar Loop Information Guide).
Separate indicators for power on, detect relay 1, detect relay 2 and fault provide for
quick visual verification of proper operation. Loop diagnostics are easily viewed with the
front panel fault indicator, differentiating between current and historical faults thus
facilitating troubleshooting.
Small size and full list of features lend the NP2 to any Parking/Access Control use from
simple presence detection to configured pulse/presence lengths with output extensions
and/or delays.
Reliable operation and long field life are key engineering goals in every Northstar
product.

NP2 Specifications
Rear Panel DIP Switch selections
Relay 1
Extend – switch 1 is for extending the detector output after
the vehicle has left the loop. Switch 1 in the OFF position
provides no extension. Switch 1 in the ON position provides
a 5 second extension once the vehicle leaves the loop. This
extension applies to relay 1 only.
Delay – switch 2 is for providing a 2 second delay, detector
will ignore the vehicle until the vehicle has been present over
the loop for 2 seconds. Switch 2 in the OFF position
provides no delay. Switch 2 in the ON position provides for
the 2-second delay. This delay applies to relay 1 only.
Presence Time – switch 3 provides for either a 1 hour
presence or permanent presence. Switch 3 in the OFF
position provides for 1 hour of presence. Switch 3 in the ON
position provides for permanent presence. The above
presence settings apply to relay 1 only. (Other options are
available).
Relay 2
Pulse Length – switch 4 provides for either a 250mS pulse
length or a 500mS pulse length. Switch 4 in the OFF position
provides a 250mS (standard) pulse length.
Switch 4 in the ON position provides a 500mS pulse length.
Operating Mode – switch 5 and switch 6 determine the
operating mode for Relay 2. The four modes are as follows:
Switch 5 and switch 6 OFF provides pulse-on-entry.
Switch 5 ON & switch 6 OFF provides pulse-on-leaving.
Switch 5 OFF & switch 6 ON provides for presence.
Switch 5 and switch 6 ON provides a fault output.
Front Panel Selections
Sensitivity – controlled by front panel rotary switch.
• 0 = Low sensitivity
• 9 = High sensitivity
Medium sensitivity is used for most applications; this is a
setting of 4 or 5. Always use the lowest sensitivity setting
that detects the desired vehicles.
Frequency – four separate settings controlled by front panel
DIP switches.
• 2+1 = High
• 2+0 = Medium High
• 1+0 = Medium Low
• 0+0 = Low
Reset – front panel reset performs a hard reset of the
detector.
Ordering Information:
Northstar Controls L.L.C. warrants this product against defects in
Manufacturing and workmanship for one y ar from date of shipmente
from the Northstar Controls L.L.C. factory.
Factory Settings:
• Set to HI frequency
• Set to Medium sensitivity (5)
• Extend/Delay in the OFF position
• Presence time set to 1 hour
• Pulse length set to 250msec
• Relay 1 = fail-safe
• Relay 2 = fail-secure
Relay Output Rating: 7A 277VAC/30VDC.
Power: 240 VAC, 120 VAC, 24 VAC, 24 VDC or 12 VDC.
(70mA DC or 1W AC)
Inductance Range: 20uH to 1500uH.
Temperature Range: -30 F to +180 F.
Lead-In Length: up to 2500 ft. with proper lead-in and loop.
Mechanical: 1 3/8”w X 3 3/32”h X 3 ½”l.
Weight: 8 oz.
Supply Voltage – incorrect voltage supplied to the unit will
not result in damage, the unit will simply not operate until
correct voltage is supplied. No fuses need to be reset.
Indicators – front panel indicators include:
Power – Green, solid with correct power supplied.
Relay 1 – Red, solid during detect.
Relay 2 – Red, solid during detect.
Fault – Yellow, solid during current fault, flashing for
historical fault.
Sensitivity Boost – automatic during detect except in the
highest sensitivity setting (9).
Factory Options:
Presence lengths of 15, 30, 60 minutes or permanent.
Pulse lengths of 250mS, 500mS, 1, 2 or 4 seconds.
Extend times of 0, 2, 5or 10 seconds.
Delay times of 0, 1, 2or 4 seconds.
Relay 1 fail-safe or fail-secure.
Relay 2 fail-safe or fail-secure.
Note: Bold indicates standard configuration from the factory.
Connector –11Pin Amphenol
Pin # Function Color
1 Power (+) Black
2 Power (-) White
3 Relay 2 N.O. Orange
4 Ground Green
5 Relay 1 Com Yellow
6 Relay 1 N.O. Blue
7 Loop Gray
8 Loop Brown
9 Relay 2 Com Red
10 Relay 1 N.C. White/Blk
11 Relay 2 N.C. White/Red
Note: The above connection is shown with correct power supplied
and no vehicle present.
Unit Voltage Part #
240 VAC NP2-240AC
120 VAC NP2-120AC
24 VAC NP2-24AC
24 VDC NP2-24DC
12 VDC NP2-12DC
Specifications are subject to change without notice.
L NP2-Rev A
For more information call LIS, Inc. @
800-964-0711