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
