Tiefenbach

810 Skyline Drive Tel: (618) 993-8513

Marion, IL. 62959 Fax: (618) 993-8403

Double wheel sensor Data Sheet No.:

Type: 2N59-1R-200-45 Date: 11.97
from Serial No. 2000 and on Page 1

Sensor Data

Switch mounting: On the inner side of the track. 45 mm below the surface of the track on a
new rail typically

Activation: By the wheel flange passing over the sensor

Rail profiles: 90 RA, 100 RE, 115 RE, 119 RE, 132 RE, 136 RE, 140 RE, 100 RA,
100 ASCE, enquire about others

Diameter of wheel: 300 mm to 1000 mm

Wheel flange sensed: 27.5 mm to 36 mm below the upper surface of the rail
Wheel flanges lower than 27.5 mm in height may be detected accurately
dependent on speeds and how switching distance on sensor has been
set after attachment to rail.

Lateral offset of wheel: Up to 50 mm

Traversing speed: ≤ 37 mph

Rail wear: 18 mm (after 8 mm, the sensor is mounted 9 mm lower, the spacing disk
is removed, or when using two-part spacing disks, the upper disk is
removed).

Data sheet 04.07 Page: 1

The right to make technical changes is reserved

Tiefenbach
810 Skyline Drive Tel: (618) 993-8513
Marion, IL. 62959 Fax: (618) 993-8403

Double wheel sensor Data Sheet No.:

Type: 2N59-1R-200-45 Date: 11.97
from Serial No. 2000 and on Page 2

Switching characteristics

Switching distance: 45 mm / - 1 mm + 2 mm (Distance of static sensing)

Switch tag ST 37 (80 mm x 200 mm x 1 mm thick)

Starting distance from 300mm wheel =

center of sensor: 600mm wheel =
960mm wheel = 155mm left, 155mm right
The detection range for System I or System II wheel diameter of 300mm
This is the attenuation length when first entering the detection field of
System I or System II and then leaving the field of System I or System II.

Attenuation length at 300 mm : ≥ 170 mm*

wheel diameter of: 600 mm : ≥ 200 mm
1000 mm : ≥ 270 mm
The detection range for System I or System II wheel diameter of 300mm
This is the attenuation length when first entering the detection field of
System I or System II and then leaving the field of System I or System II.

Switching hysterisis ≤ 2 mm (in direction of travel)

Repetition accuracy ≤ 0.5 mm

of switching point: ≤ 0.1 mm at constant temperature

Switch-on distance: ≥ 90 mm*

The distance between detection at System I and then at System II.
First the wheel will be detected at System I and then 90mm later the
wheel will be detected at System II.

Overlapping coverage: ≥ 70 mm*

of systems: The detection area of 70mm is the area that both internal systems
(System I and System II) are detecting the wheel at the same time.
The area of 70mm is the overlapping coverage of both systems.

Dynamic Switching characteristic V = 37 mph

Pulse length: ≥ 14.5 ms*

If the speed is slower or the wheel is bigger the pulse is longer

With an increasing speed, the impulses in traveling direction change

(e.g. with 9 m/s for approx. 60 mm).

Offset between the systems: ≥ 5 ms*

Overlapping coverage of ≥ 9 ms*

systems: 37 mph with 300mm wheel the minimum pulse length when both systems
are detecting the wheel

Data sheet 04.07 Page: 2

The right to make technical changes is reserved

Tiefenbach
810 Skyline Drive Tel: (618) 993-8513
Marion, IL. 62959 Fax: (618) 993-8403

Double wheel sensor Data Sheet No.:

Type: 2N59-1R-200-45 Date: 11.97
from Serial No. 2000 and on Page 3

Reliability of system Eddy current braking

against:

No effect of system: Through magnetic rail brakes being turned on if assembly and setting of
DSS are correct.

* New rail; diameter of wheel 300 mm; Wheel flange 27.5 mm; Wheel offset 50 mm;
temperature range -30° - +80°.

Control circuit

Connection sketch:

+ b r o wn
SI - Yel l ow

+ gr een
SII - wh i t e

Operating voltage: 8.2 V ± 5%

Permanent allowable line

Resistance : ≤ 200 Ohm

Intensity Amp. Undamped: ≤ 2.65 mA

Average : ≤ 2.95 mA (annual average)
Measured as per DIN 19234 item 4a

Intensity Amp. Damped : ≤ 1.45 mA

Average : ≤ 1.34 mA (annual average)
Measured as per DIN 19234 item 4b

Test voltage on system: 1 kV

Test voltage against earth: 2 kV

Lightning arrangement: Suppressor diode 1.5 kW @ 1 ms

Data sheet 04.07 Page: 3

The right to make technical changes is reserved

Tiefenbach
810 Skyline Drive Tel: (618) 993-8513
Marion, IL. 62959 Fax: (618) 993-8403

Double wheel sensor Data Sheet No.:

Type: 2N59-1R-200-45 Date: 11.97
from Serial No. 2000 and on Page 4

Wiring

Cable wires: 2 each per single rail switch

Cable wires: Railway cable, twisted pair in accordance with the DB specification sheet
DLK 1.013.20.LY or signal cable in accordance with VDE 0816

Housing

Base plate: C-Cu-Zn 33 Pb (DIN 1709)

Cap: Plastic, fully cast

Connection line: 2 x 0.75 mm3 polyurethane 5 mm long integrally cast in the housing
(PURWIL orange without protective hose can be used in gravel)

Overall Dimension: 7.25”L X 3”H X 3.5”D

Weight: About 5.5 lbs.

Color: Grey

Environment

Ambient temperature: - 22 °F to + 176°F

Resistant to: Lightning strike on the rail, through side mounting, effects of weather, UV
radiation, greases, oils, bases and salts, acids with some conditions.

Protective type (DIN 40050): IP 67

MTBF calculation: 420,000 h at + 40 °C according to Mil manual 217 d

Mechanical vibrations: 60 g at a frequency range of 25-30 Hz

Mechanical load: < 440 lbs in the vertical direction.

Data sheet 04.07 Page: 4

The right to make technical changes is reserved

Tiefenbach
810 Skyline Drive Tel: (618) 993-8513
Marion, IL. 62959 Fax: (618) 993-8403

Double wheel sensor Data Sheet No.:

Type: 2N59-1R-200-45 Date: 11.97
from Serial No. 2000 and on Page 5

Assembly

Fastening: By 2 Hex Screws M 12 x 35 DIN 609-5.6 by fitting sensor to the rail web .
Drilling of rail web necessary for bolt on version
(no reduction of rail solidity).

With SSK 6 claws for rail foot fastening without need to drill rail.
(Assembly of the rail switch steplessly adjustable).

Preferred installation Inner curve of rail

position:

Facilitation of mounting: drilling jig for particular rail profile concerned

Maintenance: See assembly instructions

Free zone: The dimensions must not fall short of those in Figure 1 and 6. Exception:
in the movable area of the tongues of the points the dimension 110
(Figure 1) can be reduced to 85 mm, provided that the DSS is not run
over.

If the installation dimensions are arranged favorably, changes in the height of the wheel cannot destroy
the switch.

If the rail head is worn away vertically, the switch can simply be moved lower vertically. Threaded drill
holes provided for this purpose make it possible to reinstall it in the base plate with no problems.
Then another vertical wear of the rail head of 8mm is possible.

In case of lowered mounting of the sensor there is a lateral offset of 16mm towards the left hand side.

Data sheet 04.07 Page: 5

The right to make technical changes is reserved