RAE T-400-R, T-400-SS Datasheet
T - 400 Series
Four Channel Shelf Mount Detector
• Meets and exceeds NEMA TS 1 specication.
• Six front panel DIP switches for each channel provide:
• Seven levels of sensitivity plus off.
• Presence or Pulse mode.
• Four loop frequencies.
• Loops are sequentially scanned to eliminate crosstalk.
• Loop Fail Event Monitor remembers and indicates intermittent and
current loop failures.
• Detector is self tuning and provides complete environmental
®
tracking.
• Dual color, high intensity LED:
• Green indicates detect.
• Red indicates loop fail.
• Complete built-in detector integrity test.
• Space provided on front panel to label detector.
• Audible detect signal (buzzer) facilitates loop and/or detector
With Audible Detect Signal
troubleshooting.
Ordering Information:
Model T-400-R Four channel detector with Relay outputs.
Model T-400-SS Four channel detector with Solid State outputs.
The Model T-400 series is designed to meet or exceed NEMA Standards TS 1-1989. Model T-400 detectors are
four channel, shelf mount type loop detectors. Individual channel detect and loop fail indications are provided via
four dual color, high intensity LEDs. Available with both Relay and Solid State outputs, the Model T-400 series
offers advanced multiple channel detection capabilities in a compact package.
3510 E. ATLANTA AVENUE, PHOENIX AZ 85040 +1.480.968.6407 EDITRAFFIC.COM
T-400 Series Specications
This is a Performance Specication. It is not intended to be used as Operating Instructions.
Loop Frequency: Each channel has four (4) DIP switch selectable loop frequencies (normally in
the range of 20 to 100 kilohertz) that are a function of the actual loop / lead-in network.
Sensitivity: Seven (7) sensitivity levels (plus off) are available for each channel. The eight
settings are selectable using three (3) front panel mounted DIP switches. Each of the seven
sensitivity levels are binary encoded from 1 to 7 (lowest to highest sensitivity). A setting of
0 turns the channel off. The sensitivity level selected determines the percentage of negative
inductance change of the loop circuit required for a CALL output signal. See SENSITIVITY,
-∆L/L, & RESPONSE TIME table.
Presence / Pulse Mode: Each channel can be independently set to operate in one of two
modes by means of front panel mounted DIP switches.
Presence Mode: Call hold time is a minimum of four minutes regardless of vehicle size,
and is typically one to three hours for an automobile or truck.
Pulse Mode: A pulse of 125 ±10 milliseconds duration is generated for each vehicle
entering the loop detection zone. Each vehicle detected is instantly tuned out if it remains
in the loop detection zone longer than two seconds. This feature allows detection of
vehicles subsequently entering the detection zone. After each vehicle leaves the loop
detection zone, the channel resumes full detection sensitivity within one second.
Changing the setting of the Presence / Pulse Mode switch will RESET the channel.
Audible Detect Signal: A front panel mounted push button is used to enable an audible detect
signal that is emitted any time a given channel’s detection zone is occupied.
Detect / Fail Indicator: Each channel has a super bright, high intensity, dual color (Red / Green)
LED that indicates a Call output and/or the status of any current or prior loop fault condition for
that channel. A continuous ON (green) state indicates a CALL output. A continuous ON (red)
state indicates that a current open loop failure condition or an inductance change condition of
greater than +25% condition exists. This indication is also generates a CALL output. A one Hz
(red) ash rate indicates that a current shorted loop failure condition or an inductance change
condition of greater than -25% condition exists. This indication is also generates a CALL output.
A ash rate of three 50 millisecond (red) pulses indicates a prior loop failure condition. A ash
rate of three 50 millisecond (red) pulses followed by a 750 millisecond (green) pulse indicates a
prior loop failure condition and a current CALL output (detect state). If the audible detect signal
is activated, any detect indication that would normally be displayed as green will be displayed
as orange.
Loop Fail (Event) Monitor: If the total inductance of a channel’s loop input network goes
out of the range specied for the detector, or rapidly changes by more than ±25%, the
affected channel will immediately enter the programmed Fail-Safe mode of operation. Fail-Safe
operation generates a continuous call output in the Presence or Pulse mode. The channel’s
Detect / Fail LED will provide an indication of the type of loop failure (see Detect / Fail Indicator,
above) and will continue to do so as long as the loop fault exists. If the loop self-heals, the
channel will resume operation in a normal manner, but the Detect / Fail LED of the channel will
begin to ash at a rate of three ashes per second (red) as a means of indicating a prior Loop
Fail condition. The Detect / Fail LED will continue its indication of a prior loop failure until the
detector channel is reset, the detector is reset, or power is removed.
Loop Inductance Range: 20 to 2000 microhenries with a Q factor of 5 or greater.
Loop Feeder Length: Up to 5000 feet (1500m) maximum with proper feeder cable and
appropriate loops.
Loop Input: Transformer isolated. The minimum capacitance added by the detector is 0.068
microfarad.
Scanning: The loop(s) connected to each detector channel are activated alternately to minimize
crosstalk between adjacent loops connected to the same detector.
Lightning Protection: The detector can tolerate, without damage, a 10 microfarad capacitor
charged to 2,000 volts being discharged directly into the loop input terminals, or a 10 microfarad
capacitor charged to 2,000 volts being discharged between either loop terminal and earth
(chassis) ground.
Detector Reset: Changing the position of any channel’s DIP switches (except the Frequency
switches) will reset that detector channel. Pressing the front panel mounted reset switch will
reset the detector. Reapplication of power after a power loss will also cause the detector to
reset. After changing any channel’s Frequency selection switches (DIP switches 1 & 2), the
channel will require a reset.
Solid State Outputs: Optically isolated. 30 VDC max. collector (drain) to emitter (source). 100
mA max. saturation current. 2 VDC max. transistor saturation voltage. The output is protected
with a 33-volt Zener diode connected between the collector (drain) and emitter (source).
Relay Outputs: The relay contacts are rated for 6 Amps max., 150 VDC max., and 180 Watts
max. switched power.
Response Time: The response time of any channel is 120 ± 40 milliseconds regardless of the
sensitivity level setting. See SENSITIVITY, -∆L/L, & RESPONSE TIME table.
Self Tuning: The detector automatically self tunes and is operational within two seconds after
application of power or after being reset. Full sensitivity and hold time requires 30 seconds of
operation.
Environmental & Tracking: The detector is fully self-compensating for environmental changes
and loop drift over the full temperature range and the entire loop inductance range.
Grounded Loop Operation: The loop isolation transformer allows operation with poor quality
loops (which may include one short to ground at a single point).
Detect Outputs: A detection output (CALL) is indicated by a closed relay contact (Relay
output) or a conducting state (Solid State output). A channel’s output defaults to a CALL
state for any loop failure condition on that channel or upon loss of power.
Test Mode: A PCB mounted jumper enables Test Mode. Test Mode provides a means of
verifying proper operation of the detector’s controls and indicators (switches and LEDs).
Each channel’s loop oscillator circuit is also checked to verify the correct frequency in each
of the four frequency settings. The frequency portion of testing requires that each channel
be connected to a 100 microhenry loop; if other inductance values are used, the frequency
test results will be invalid.
Weight: 34 oz (963.9 gm).
Size: 6.45 inches (16.38 cm) high x 2.50 inches (6.35 cm) wide x 6.35 inches (16.13 cm)
deep (excluding connector). Connector adds .675 inches (1.71 cm) to depth measurement.
Operating Temperature: -40ºF to +180ºF (-40ºC to +82ºC).
Circuit Board: Printed circuit boards are 0.062 inch thick FR4 material with 2 oz. copper on
both sides and plated through holes. Circuit boards and components are conformal coated
with polyurethane.
Connector: MS 3102A-22-14P 19 pin male. See PIN ASSIGNMENTS table.
Power: 89 to 135 VAC, 50/60 Hz, 6 Watts max.
Sensitivity -∆L/L Response Time
0 OFF N/A
1 0.64% 120 +/- 40 ms
2 0.32% 120 +/- 40 ms
3 0.16% 120 +/- 40 ms
4 0.08% 120 +/- 40 ms
5 0.04% 120 +/- 40 ms
6* 0.02%* 120 +/- 40 ms*
* Denotes Factory Default
Notes: Changing a sensitivity switch will RESET the detector.
7 0.01% 120 +/- 40 ms
Switch Function Setting Factory Default
1 Frequency 0 OFF
2 OFF
3 Presence / Pulse Presence ON
4
5 ON
6 ON
PIN Function (Relay Outputs) Function (Solid State Outputs)
A Power, Neutral, 120 VAC Power, Neutral, 120 VAC
B Channel 4 Output, Relay Common Channel 4 Output, Emitter (Source)
C Power, Line, 120 VAC Power, Line, 120 VAC
D Channel 1 Loop Input Channel 1 Loop Input
E Channel 1 Loop Input Channel 1 Loop Input
F Channel 2 Loop Input Channel 2 Loop Input
G Channel 2 Loop Input Channel 2 Loop Input
H Chassis Ground Chassis Ground
J Channel 3 Loop Input Channel 3 Loop Input
K Channel 3 Loop Input Channel 3 Loop Input
L Channel 4 Loop Input Channel 4 Loop Input
M Channel 4 Loop Input Channel 4 Loop Input
N Channel 1 Output, Relay Normally Open Channel 1 Output, Collector (Drain)
P Channel 1 Output, Relay Common Channel 1 Output, Emitter (Source)
R Channel 2 Ouput, Relay Common Channel 2 Output, Emitter (Source)
S Channel 2 Output, Relay Normally Open Channel 2 Output, Collector (Drain)
T Channel 3 Output, Relay Common Channel 3 Output, Emitter (Source)
U Channel 3 Output, Relay Normally Open Channel 3 Output, Collector (Drain)
V Channel 4 Output, Relay Normally Open Channel 4 Output, Collector (Drain)
Sensitivity, -∆L/L, Response Time
Factory Default Settings
OFF
Sensitivity 6
PIN Assignments
Model T-400 (551-2006-00) 03/23/2020
© COPYRIGHT 2020. Eberle Design, Inc. All Rights Reserved.
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