Reno A&E E-1000 Operations Manual
E-1000
Loop Detector
Firmware Version 4.02
Operations Manual
Four Channe l Menu Driven Programmable Inductive Loop Vehicle
Detector Designed for Railroad Applications
Four Loop Inputs, Eight Vital Outputs, and Four Vital Inputs
Built-in Loop Analyzer for Each Channel
This manual contains technical in formation for the
E-1000 Loop Detector
pn 889-0503-01 Revision: April 2020
THE FOLLOWING PRODUCT WAS DESIGNED, INSPECTED, TES TED AND
MANUFACTURED IN THE USA BY EBERLE DESIGN, INC. IN PHOENIX, ARIZONA.
INFORMATION CONTAINED HEREIN IS PROPR IETARY TECHNICAL INFORMATION OF
EBERLE DESIGN, INC. PUBLICATION, REPRODUCTION OR USE IN WHOLE OR PART IS
NOT PERMITTED EXCEPT UNDER TERMS AGREED UPON IN WRITING. ALL
REGISTERED TRADEMARKS OF EBERLE DESIGN INC. ARE UNDER
MAINTENANCE NOTE
IT IS AN EBERLE DESIGN, INC. RECOMMENDATION THAT EACH UNIT BE TESTED
AT LEAST ANNUALLY TO ENSURE COMPLIANCE WITH FACTORY
SPECIFICATIONS AND MEETS PROPER OPERATIONAL STANDARDS. THE
RESULTS OF THIS TESTING WILL BE DOCUMEN T ED .
© COPYRIGHT
Model E-1000 Operations Manual
Table of Contents
Section 1 General Description ......................................................................................... 1
Section 2 General Characteristics ................................................................................... 2
2.1 Loop Frequency ..................................................................................................... 2
2.2 Sensitivity ............................................................................................................... 2
2.3 Presence / Pulse .................................................................................................... 2
2.4 Call Delay ............................................................................................................... 2
2.5 Call Extention ......................................................................................................... 2
2.6 Max Presence Timer .............................................................................................. 2
2.7 End-Of-Green (EOG) ............................................................................................. 2
2.8 Option 1: Loop Inductance Display ......................................................................... 3
2.9 Option 2: Loop Inductance -∆L/L Display ................................................................ 3
2.10 Option 3: Call Extention Control ........................................................................... 3
2.11 Option 4: Noise Filter Disable ............................................................................... 3
2.12 Option 5: Phase Green Loop Compensation ........................................................ 3
2.13 Option 9: Third Car Passage ................................................................................ 3
2.14 Option 10: Directional Logic.................................................................................. 4
2.15 Option 11: Audible Detect Signal .......................................................................... 5
2.16 Option 12: Detector Disconnect ............................................................................ 5
Section 3 Specifications .................................................................................................. 7
3.1 Physical.................................................................................................................. 7
3.2 Minimum Flash Dip Switch Programming ............................................................... 7
3.3 Operational ............................................................................................................ 7
3.4 Tables: Sensitivity, -∆L/L, & Response Time ............ Error! Bookmark not defined.
3.5 Table: Default Settings ........................................................................................... 8
3.6 Tables: Pin Assignments ........................................................................................ 9
Section 4 User Interface ..................................................................................................11
Section 5 Installation and Set-Up ...................................................................................12
5.1 Program Mode Display Screens ............................................................................12
5.2 Normal Mode Display Screens ..............................................................................15
5.3 Loop Fail Indications .............................................................................................18
5.4 Setting Sensitivity using the Bar Graph .................................................................18
5.5 Setting Sensitivity for Motorcycle Detection using the Bar Graph ...........................19
5.6 Full Restore to Factory Default Settings ................................................................19
5.7 Display Test ..........................................................................................................19
Section 6 Block Diagram .................................................................................................20
Section 7 Theory of Operation ........................................................................................21
Section 8 Maintenance and Troubleshooting ................................................................22
8.1 Troubleshooting Power Problems ..........................................................................22
8.2 Troubleshooting Initialization Problems .................................................................22
8.3 Troubleshooting Loop Fail Problems .....................................................................23
8.4 Troubleshooting Intermittent Loop Fail Problems ...................................................24
8.5 Troubleshooting Intermittent Detector Lock-Ups ....................................................24
8.6 Troubleshooting Delay Problems ...........................................................................24
8.7 Things to Know About Loops .................................................................................25
Section 1 General Description
This product manual was written for people installing, operating, and maintaining the Reno A & E Model E-1000
Series inductive loop vehicle detector. The Model E-1000 is a four channel, rack mount type, inductive loop
vehicle detector designed to meet or exceed NEMA Standards TS 2-1992 and is downward compatible to N EMA
Standards TS 1-1989.
The Model E-1000 uses a microcontroller to monitor and process signals from the loop / lead-in circuits, Phase
Green Inputs, and the reset input. It uses these inputs to deter mine how to control the four detector channel outputs
and the four TS 2-1992 stat us outputs (if equipped). A Liquid Crystal Display ( LCD), four light emitting diodes
(LEDs), and four front panel pushbuttons are used to display and program all detector functions. Several
diagnostic modes are available to aid technicians and service personnel in troub leshoot ing detect io n problems.
The use of an LCD is what distinguishes this detector from that of other manufacturers. It allows more
information, never before available, to be displayed to the user during nor mal operation of the detector. The LCD
makes it easy to view and adjust all programmable detector options and settings. It is no longer necessary to check
or change detector sett ings with DIP switches. An eight-se gment bar graph at t he top of the LCD ca n be used to
provide a graphical representation of the relative change of inductance as seen by the detector at the current
sensitivity level. The bar graph automatically takes into account loop size, loop inductance, number of loops,
number of turns, loop geometry, lead-in length, etc. The bar graph functions as a sliding scale that relates to the
programmed Sensitivity Level. The first (left-most ) bar graph segment represents the mini mum inductance change
necessary for the detector to output a call at the currently selected sensitivity level. Larger inductance changes will
indicate more se gments. Each additional segment indicates that the next sensitivity level has also been met or
exceeded. When used in this manner, t he bar graph provides an indication of w hethe r the s ens itivit y is set too high
or too low, facilitating the ideal setting of the sensit ivity level.
All programmed settings are stored in non-volatile memory and can only be changed by programming new
settings. Loss of power or a de tector reset will not change any of t he programmed settings. If a loop failure
occurs, the LCD will display the type of loop failure as L lo (for -25% change or shorted loop conditions) or L hi
(for +25% change or open loop c onditions). Each loop failure is counte d and accumulated in the Loop Failure
Memory. The number of failures since the last detector reset or power interrupt ion is very us eful infor mation
during analysis of intermittent loop operation.
The Model E-1000 Series detector is a scanning detector. The scanning operation sequentially activates the ON
and OFF cycle of each channel’s oscillator. Since only one channel’s loop(s) is (are) active at a given time,
crosstalk between adjacent loops connected to t he same scanning detector is minimized. The Model E-1000
Series’ unique scanning process also disconnects the capacitors and dampens the oscillator during the o ff cycle.
This eliminates oscillation past the OFF point (ringing or deca y) every time the loop circuit is scanned which can
result in crosstalk. When operating in the Program Mode, the Model E-1000 Series d isplays the real time loop
freque ncy rea ding for each channel. The eight frequency settings ca n be incremented or decremented to p rovide
precise frequency readings, removing any guesswork when cha nging frequency settings to eliminate crossta lk.
NOTE: Adjacent loops connected to different c hannels of a non-scanning detector or different scanning detectors
should be set to different frequencies with maximum separation.
The Reno A & E Model E-1000 Series utilizes the first major innovation in inductive loop detectors since the
introduction of digital detectors. The programming of all of the detector’s parameters with four normally open
pushbutton switches not o nly simplifies setup by removing binary coded DIP s witches, but also increases the
reliability of the detector by eliminating the dependence on switch contacts during normal operation. The detailed
descriptions displayed on the LCD eliminate the interpretation of numerous LED flash rates to determine the
detector status. In addition, the Model E-1000 offers t he versatility of software c ontrol. Special functions are
possible with a simple change of the socket-mounted microprocessor. Special functions are de fined as unique
options (e.g. Option 5, Opt ion 12, etc.). Spe cial option functio ns are activated thro ugh the use o f the LCD menu
option programming.
The Model E-1000 Series is comprised of the following detectors:
E-1100-SS For 332 cabinet (170 controller) applications ca lling for a four channel, 2” wide (double width),
E-1200-SS For NEMA TS 1 -1989 and TS 2-1992 applications calling for a four channel, four c hannel, 2”
E/2-1200-SS For NEMA TS 1-1989 and TS 2-1992 applicat ions calling for a four channel, 1.2” wide (single
E/2-1300-SS For special applications calling for a four channel, 1.2” w ide (single width), rack mount detector
rack mount detector with solid state outputs and an audible detect signal (buzzer).
wide (double width), rack mount detecto r with solid state outputs and an audible detect signal
(buzzer).
width), rack mount detector with solid state outputs and an audible detect signal (buzzer).
with solid state outputs and an audible detect signal (buzzer).
889-0503-1 Model E-1000 Operations Manual Rev Apr 2020 Page 1 of 25
Section 2 General Characteristics
2.1 LOOP FREQUENCY
There are eight (8) selectable loop frequency settings (nor mally in the range o f 20 to 100 kilohertz) pe r channel.
The actual loop operating frequency is a function of the loop / lead-in network and the components of the loop
oscillator circuit. The d igital display of the actual loop operating frequency for each setting makes it easy to
quickly identify and eliminate crossta lk in the most difficult to configure intersections. The frequency display is
typica lly very stab le when the loop is vacant and veh icles are not passing nearby the loops. If the reading is
varyin g by more than ±1 in the last digit, this is an indication of possible crossta lk betwee n loops.
2.2 SENSITIVITY
There are eight (8) selectable loop frequency settings (normally in the range of 20 to 100 kilohertz) per channel.
The actual loop operating frequency is a function of the loop / lead-in network and the components of the loop
oscillator circuit. The digital display of t he actual loop operating frequency for each setting makes it easy to
quickly identify and eliminate crossta lk in the most difficult to configure intersections. The frequency display is
typica lly very st able when t he loop is va cant and ve hicles ar e not passi ng nearby the loops. I f the readin g is
varyin g by more than ±1 in the last digit, this is an indication of possible crosstalk between loops.
2.3 PRESENCE / PULSE
One of two mutually exclusive modes of operation for each channel is available. Presence or Pulse mode is
toggled by momentarily pressing e ither the (UP) or (DOWN) butto n.
PRESENCE MODE: Provides a call hold time of at least four minutes (regardless of vehicle size) and typically one to
three hours for an automobile or truck.
PULSE MODE: An output Pulse of 125 ±10 milliseconds duration is generated for eac h ve hicle ente ring t he loo p
detection zone. Each detected vehicle is instantly tuned out if it remains in the loop detection zone longer than two
seconds. This enables detection of subsequent vehicles entering the loop detection zone. After each vehicle leaves
the loop detection zone, the channel resumes full sensitivity within 0.5 seconds.
2.4 CALL DELAY
Each channel’s Call Delay is ad justab le from 0 t o 255 seconds in one-second steps. Call Delay time starts counting
down w he n a veh ic le e nt ers t he loo p detect ion zone. The re maining Call Dela y time is c ontinuously displa yed on
the LCD. Whenever a Phase Green Input (call delay override) signal (pin 1, 2, 3, or 10) is active (low state), the
Call Delay function fo r that channel is aborted and the C all Delay time forced to zero.
2.5 CALL EXTENTION
Each channel’s Call Extension is adjustable from 0 to 25.5 sec onds in 0.1-second steps. Extension time starts
counting down when the last vehicle clears the loop detection zone. The remaining Call Extension time is
contin uous ly d isp la yed o n the LCD. Any veh icle ente r ing t he lo op de tec tio n zo ne d uri ng the Ca ll Ext ens io n ti me
period causes the channel to return to the Detect state, and later, when the last vehicle clears the loop detection
zone, the full Call Exte nsion time starts counting down again. (See Option 3, Call E xtension Control, for an
alternate mode of operation for Call Extension.)
2.6 MAX PRESENCE TIMER
When activated, each channel’s Max Presence timer is adjustable from 1 to 999 seconds in one-second steps. A
setting of OFF turns the Max Presence timer off. The Max Presence function is used to limit presence time, by
automatically resetting the channel. If this function is enabled (ON), the Max Pre sence timer begins counting
down when a call is initiated and t he remaining ti me is continuously displaye d on the LCD. I f the loop becomes
vacant before the Max Presence timer reaches zero, the call is dropped and no automatic reset occurs. If the EndOf-Green (EOG) function is not enabled (OFF) and the call is still present when the Max Presence timer reaches
zero, the cha nnel then is aut omatically reset. If the EOG functi on is e nabled (ON) and the call is still present w hen
the Max Presence timer reaches zero, the channel enters a Wait state. The Wait state continues until either the loop
becomes vacant or the Phase Gree n Input signal for a channel (p in 1, 2, 3, or 10) transitions fro m green to not
green with the call still present. If the loop becomes vacant first, the call is dropped and no automatic reset occurs.
If the P hase Gree n Input tr ansitio ns from gre en to not green whil e a channe l is in a W ait state , the chan nel is
automatically reset. The signals on pins 1, 2, 3, and 10 are also called Call Delay Overrides. (See Section 3.2,
Phase Green Input specifica t ion for volt age leve ls . )
2.7 END-OF-GREEN (EOG)
Each channel’s EOG setting can be toggled O N or OFF b y moment arily pr essing either the (UP) or (DOWN)
button. The EOG function is used to synchronize resetting of a detector with the termination of the associated
phase green. The assumption is that t his is the sa fest point in t ime to reset the c hannel. T his assumption is based
on the premise that at the termination of the associated phase green, traffic should be moving, and therefore, a reset
would not result in the loss of a call when traffic comes to rest over the loop(s). The EOG func tion is only
889-0503-1 Model E-1000 Operations Manual Rev Apr 2020 Page 2 of 25
available when the Max Presence function is set between 1 and 999 seconds. It is not available when the Max
Prese nce fun ct io n is O FF. W he n t he E OG function is enabled (ON), the channel will automatically be reset at the
same time the Phase Green Input signal (pin 1, 2, 3, or 10) transitions from the ON state to the OFF state, if the
Max Presence Time has counted down to zero and is resting in the wait state . T he s igna ls on p ins 1 a nd ar e a lso
called Call Delay Overrides. (See Section 3.2, Phase Green Input specifications for voltage levels.)
2.8 OPTION 1: LOOP INDUCTANCE DISPL AY
Each cha n ne l’s Loo p I nd uct a nce Dis p la y se tt in g ca n be t o ggle d O N or O FF b y mo me nta r il y pre ss i ng e it her the
(UP) or (DO W N ) b u t to n. W hen this o p ti o n is e nabled (ON ) , t he LC D d is p la ys the tota l lo o p inductanc e (a c t ua l
loop inductance plus actual lead-in in ducta nce) in m icrohe nries for loop induct ance va lues i n the ran ge of 20 to
2500 microhenries. By recording the inductance of the loop / lead-in circuit when it is first insta lled, the actual
inductance can be compared to the expected inductance to help identify defective loop / lead-in circuits. Loop /
lead-in inductance can be easily estimated using the simple formulas included in Section 8.7 of this manual.
NOTE: Enabling this option act ivates it for all c hannels. This option is a utomatically disabled 15 minutes after
activation or on loss of power.
2.9 OPTION 2: LOOP INDUCTANCE -∆L/L DISPLAY
Each cha n ne l’s Loo p I nd uct a nce -∆L/L Display sett ing can be toggled ON or OFF by momentarily press ing either
the (UP) or (DOWN) but ton. When th is option is e nabled (ON), the LCD displays the percentage of
induct ance change (-∆L/L value) during the Call state. To fac ilitate the viewing of the maximum amount of
change in the -∆L/ L value w hile tra ffic is i n motion o ver the de tectio n zone, t he channe l holds t he peak -∆L/L
value for a period of two seconds. NOT E: Enabling this option activates it for all channels. This option is
automatically disabled 15 minutes after activation or on loss of power.
2.10 OPTION 3: CALL EXTENTION CONTROL
Each cha nnel’ s Cal l Exte nsion C ontro l set ting ca n be to ggled O N or OF F by mo mentar ily pre ssin g eithe r the
(UP) or (DO WN ) b ut to n. W he n t h is o pt io n is e nab led (O N) , t he c ha n nel w ill e x tend ca l ls f or t he pr o gra mme d
extension t i me only when the Phase Gree n Input s ignal (p in 1, 2, 3, or 10) is active. When this option is OFF, the
channel extends ALL calls for the programmed exte nsion time. The signals o n pins 1, 2, 3, and 10 are also ca lled
Call Delay Overrides. (See Section 3.2, Phase Green Input specifications for voltage levels.)
2.11 OPTION 4: NOISE FILTER DISABLE
The detector’s Noise Filter Disable setting can be toggled ON or OFF by momentarily pressing either the (UP)
or ( DO WN ) b utt o n. W he n Op t io n 4 is e nab le d ( ON ), inte r na l no is e f ilt er in g is d isa ble d t hus p ro vid in g a fas te r
response time. When this opt ion is OFF, internal noise filtering is utilized. When the detector is used in speed
and/or occupancy applications, the noise filter s hould be disabled (i.e. Option 4 ON) to provide the most accurate
data possible. It is recommended that this option not be activated. The factory default setting o f OFF provides
stable operation in high crosstalk environments. NOTE: Enabling this option activates it for all channels.
Changing the setting of this feature will reset all detector channels.
The Loop Fail Count is not reset when the setting of Option 4 is changed. Also, changing the setting of Option 4
will not cause the prior Loop Fail indication to cease (see Section 5.3, Loop Fail Indications).
2.12 OPTION 5: PHASE GREEN LOOP COMPENSATION
Each channel’s Phase Green Loop Co mpensation setting can be toggled ON or OFF by mo mentarily pressing
either the (UP) o r (DOWN) button. When Option 5 is enabled (ON), normal loop compensation is used until
the Phas e G re e n I n p ut signal (p i n 1 o r 2) becomes active. Once the Phase Green Input signal is active, the channel
desensitizes the loop. Maximum desensitization is 0.05% (-∆L/L). This desensitization tunes out small changes,
such as adjacent lane pickup, therefore minimizing the chance of max timing an empt y lane. Note: A small
motorcycle may also be tuned out in a short period o f time following the start of Phase Green. This optio n is
useful in minimizing false detection resulting from adjacent lane pickup when a channel must be run with a high
sensitivity s etting. When Opt ion 5 is not enabled (OFF) , norma l loop compensation is used.
2.13 OPTION 9: THIRD CAR PASSAGE
Each channel’s Third Car Passage setting can be toggled ON or OFF by momentarily pressing either the (UP) or
(DO WN ) b ut to n. Op tion 9 is a paired channe l option. This means that it takes two c hannels to imple ment the
feature. Therefore, when this option is toggled ON or OFF in one channel, its paired channe l is a lso set to the sa me
state. In the Model E-1000, C hannel 1 is paired with C hannel 2 and Channe l 3 is paired with C hannel 4. NO TE:
Option 9 is mutually exclusive with Opt ion 10. Turning ON one option will automatically tur n OFF the other
option.
When Op t ion 9 is e nab led (ON ) , t he o ut pu t o f the tw o p air ed c ha n ne ls a re logically ANDed together. This means
that while the loops for both of the paired channels are occ upied, a call will be output on both channe ls. While
only one channel is occupied, or neither channel is occupied, a call will not be output for either cha nne l. The f irs t
889-0503-1 Model E-1000 Operations Manual Rev Apr 2020 Page 3 of 25
Loop B
Loop A
channel with detection will enter a pend ing state w hile wait ing for detect ion on the ot her pa ired cha nnel. While in
the pending state, the LCD will show Pnd on the d isplay.
This feature is intended to be used in Protected / Permissive left turn situations. The expected ins ta llation is a stop
bar loop for the left turn lane connected to one c hanne l, a queue detect ion loop (with a s mall amount o f delay ti me
programmed) for the left turn lane connected to the other channel, and the output of either channel connected to the
Vehicle Call input for the protected movement of the traffic controller.
Basic Installation - Loop A is the
Queue Detection loop and Loop
B is the Stop Bar loop.
Car enters Loop A - No call is
output.
Car proceeds to Loop B - No call
is output.
Additional cars enter the left turn
lane - When the back of the
queue reaches Loop A while a
car is still over Loop B, a call
will be output.
When Third Car Passage is turned on, as the first vehicle enters the left turn lane it will dr ive over t he queue
detection loop. Since there is no vehic le over the stop bar loop, there is no call output genera ted. The vehicle
advanc es to t he sto p bar loop. Still, no out put is gene rated beca use the re is no veh icle o ver the queue detection
loop. If the vehicle traffic in the left turn lane backs up to the queue detection loop, then the stop bar loop and the
queue detection loop will both be occupied at the same time. This will cause the detector to generate a call to the
traffic co ntroller to service the protected movement for the left turn. This should help clear the queue of vehicles
in the left turn lane. The spacing between the stop bar loop and the queue detection loop controls the size of the
queue needed to generate a call to the protected movement of the controller. The delay time on the Queue
Detection loop should be sufficiently long that vehic les driving over this loop to enter the queue do not generate a
call.
2.14 OPTION 10: DIRECTIONAL LOGIC
Each c ha n nel’s D ire c t ional Lo gic setting can be toggled ON or OFF b y momentarily press ing either the (UP) or
(DOWN) button. Option 10 is a paired c hannel option. This means that it takes two channe ls to implement t he
feature. Therefore, when this option is toggled ON or OFF in one channel, its paired channe l is a lso set to the sa me
state. In the Model E-1000, C hannel 1 is paired with C hannel 2 and Channe l 3 is paired with C hannel 4. NO TE:
Option 10 is mutually exclusive with Opt ion 9. Turning ON one option will automatically tur n OFF the other
option.
When Op tion 10 is enab led (ON ), dire ctiona l logic is enabled. Directional logic starts with a detection on one
channel. This channel will go into the pending state, display Pnd on the LC D , a nd N O T output a c a l l. W hen both
of the paired channe ls have detect ion, the last channel to have d etect ion will output a call until the detection for the
last c ha n ne l e nd s , e ve n if t h e d e te c t ion ends fo r t he fi rs t c hannel. None of t he t i mi n g f un c t io ns of the f ir s t channe l
with a detection will ti me (Delay, Extens ion, Max Presence, a nd Detector Disconnect) a nd the first channel w ill
always operate in the Presence Mode regardless of the programming of the channel.
This feature is intended to be used in parking lot applications where vehicles can enter or exit from the same lane,
freeway ramps for wrong way detection, and left tur n la ne s w he re o t her movements in t he inte rs ec ti o n te nd t o cl ip
the detection zone of the left turn lane. The expected installation is two loops, one after the other in the same lane,
spaced anywhere from slightly overlapping to 6 feet apart. NOTE: Contact a Field Engineer at Reno A & E
regarding proper loop configurations and spacing for specific applic ati ons.
889-0503-1 Model E-1000 Operations Manual Rev Apr 2020 Page 4 of 25
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