Signals and Associated
Equipment
Ansaldo STS USA
(Formerly known as Union Switch & Signal)
RSE-7B1
Rev. 3-09
Multi-Purpose Color Light Signals: LED and Incandescent
ASTS USA’s service-proven Multi-Purpose Color
Light Signals are now available with LED light
units, as well as traditional incadescent lamp
units. LED units provide exceptional service life,
minimal maintenance, superior light projection
and low power consumption. Like incandescentbased signals, LED-based signals are provided in
a variety of configurations and can be futher
customized to meet a railroad’s specific needs.
General Description
LED Style Signals
ASTS USA has designed and engineered a complete
LED signal solution specifically for the unique railroad
environment. This solution offers LED optics that
meet railroad light distribution requirements, with low
current draw, true light-out detection functionality and
placement of all vital electronics in the wayside
equipment (instead of the signal module). These
features lead to enhanced service life, reduced
maintenance and installation costs, and improved
safety and visibility.
In contrast to other LED signal modules, ASTS USA’s
unique design moves the vital electronic circuitry from
the module to the wayside controller. This "naked"
LED, which is not wired like an incandescent bulb, is
more reliable and less vulnerable to lightning damage.
Either a MicroLok® II LED 12 PCB or MicroLok®
Object Controller 4000 can be used to perform both
the hot filament check and the cold filament check.
Constant monitoring of the current and voltage flowing
through the LED provides more accurate light-out
detection. This feature provides for better
management of the user’s maintenance forces.
ASTS USA’s LED color signal module, which uses 10
to 14 high-powered LEDs in series, meets all light
visibility and dispersion requirements. The module
draws 14 watts of power and uses only 350 milliamps
of current when the signal is "On." This allows for the
use of a smaller copper wire size, resulting in major
cost savings for new interlocking installations.
The unit’s optical design matches the light dispersion
patterns of incandescent signal modules, allowing for
superior sighting distances and angles. The module
is fully sealed, preventing moisture from entering the
To order, call 1-800-652-7276
e-mail: orders@ansaldo-sts.us
lens. The longer life span of the LED signal module,
compared to an incandescent lamp, reduces signal
module replacement labor costs over the service life
cycle.
This versatile product fits in the new ASTS USA
Aluminum Mainline Signal Assembly (see below), but
can also be installed into existing 8-3/8” or 6-3/8”
(21.3 cm or 16.2 cm) signal housings.
Mainline Signal Assemblies (LED or Incandescent)
ASTS USA’s Signal Assembly combines high quality
construction with a highly adaptable design. The
modular signals can be stacked with two, three, or
four signal units as well as CR-2 configurations as
required by the application. Individual signal units
feature a large compartment for ease of access to
electrical and optical components.
Assemblies with incandescent lamp optics are factory
pre-focused and utilize high-impact color lenses. Signal
indications can be easily seen over long distances, even
in bright daylight. An anti-phantom screen is available for
each lens assembly to prevent unwanted secondary
reflections; contact ASTS USA for this screen.
The mainline signal assembly can be mounted on top of
the mast, or on the front side with a special side-of-mast
mounting bracket.
Housings are designed and tested to meet AREMA
vibration recommendations and tested to wind gusts of
130 mph.
www.ansaldo-sts.com
RSE-7B1, p. 1
Ansaldo STS USA
(Formerly known as Union Switch & Signal)
RSE-7B1
Multi-Purpose Color Light Signals:
LED and Incandescent
Rev. 3-09
Mainline
Signal
Assemblies
Advantages
Specifications
•
LED Signal Units
•
•
•
•
•
•
•
LED Signal Module contains no vital electronics,
features modular design.
Constant Current:
350 mA
Input Voltage Range:
22.0 to 59.0 Vdc (36.0 Vdc
nom.)
Regulator Input V.:
9.8 to 16.2 Vdc (12.0 Vdc
nom.)
Isolation:
2000 Vac @60 Hz for 1.0
minute.
Assembly is adaptable to incandescent as well as
LED signal units.
Temperature Range:
-40°C to +70°C
Humidity:
95% relative, @ +70oC
Signal operation more reliable than prior designs,
less vulnerable to lighting damage.
Shock and Vibration:
Compliant to AREMA (AAR)
Manual, Part 11.5.1, Class B
Enclosure:
NEMA Type
4 (full dust and moisture
protection)
Module Lens Sizes:
6-3/8” or 8-3/8”
Module Lens Colors:
Red, amber (yellow), cyan
(green), lunar (white)
LED module affords lower current draw, provides
true light out detection.
Complete LED Signal Assembly is fully adjustable
for accurate field alignment.
Needs minimum on-site visits for maintenance.
Other maintenance advantages: Checking via
remote diagnostics link, longer service life than
incandescent lamps.
Lower current draw permits use of smaller gauge
wire, thus reducing installation material costs.
LED Photometric
Luminous Intensity
Luminous Intensity Values
RSE-7B1, p. 2
See tabulation below.
Multi-Purpose Color Light Signals:
LED and Incandescent
Ansaldo STS USA
(Formerly known as Union Switch & Signal)
RSE-7B1
Rev. 3-09
Specifications (cont’d)
LED Compliance*
Per AREMA C&S Manual, Part 7.1.5**
**
Red chromaticity does not comply where red is between 627 nm and 645 nm (per
available LED technologies.)
•
Signal Assemblies
Signal Unit Options:
1 to 4 units
Refer to second on page 4 tabulation to order the
following:
Lens Color Options:
Red, yellow, green, lunar
white
‐
LED signal modules for installation in signal
assembly.
Incand. Lens Sizes:
High: 8-3/8” (21.3 cm) outer,
5-1/2” (14.0 cm) inner
‐
Constant Current Regulator: Power source for
LED signal units.
Incand. Sockets:
Standard single-contact, 2-pin
bayonet
‐
Driver Board Protection PCBs: Protect LED
electronics from voltage surges.
Top-of-Mast Mtg:
For 5” (12.7 cm) masts
Side-of-Mast Mtg:
For 5” (12.7 cm) masts; see
tab.
‐
LED 12 PCB for installations where a MicroLok
II unit is controlling the signal.
‐
Note: If driving the signal from a MicroLok
Object Controller (model OC-4000), contact
your ASTS USA Account Executive for ordering
information.
Ordering and Additional Information
•
•
Refer to first tabulation on page 4 to order signal
head assemblies with or without signal units.
•
Note: Signal assemblies only for 8-3/8” (21.3 cm)
signal units. Contact ASTS USA to order
assemblies for 6-3/8” (16.2 cm) units.
•
Refer to these RSE Catalog sections for additional
technical information:
‐
LED Signal Modules: RSE-7A2
‐
Constant Current Regulator: RSE-7A2
‐
Driver Board Protection PCB: RSE-7A2
‐
MicroLok II LED 12 PCB: RSE-1A12, RSE-1D2
‐
MicroLok Object Controller (ref. OC-4000):
RSE-1B1, RSE-1B2
Contact your ASTS USA Account Executive for
special signal configurations required.
RSE-7B1, p. 3
Ansaldo STS USA
(Formerly known as Union Switch & Signal)
RSE-7B1
Multi-Purpose Color Light Signals:
LED and Incandescent
Rev. 3-09
Ordering and Additional Information (cont’d)
Order No.
N44328201
N44328301
N44328401
N44328501
N44327801
N44327901
N44328001
N44328101
N44326801
N44326701
N44325901
N44325902
N44326901
N44326902
Ordering No.
N46212801
N46212802
N46212803
N46212804
N46204401
N46204402
N46204403
N46204404
N46205201
N46205202
N34801401
N44325101
RSE-7B1, p. 4
Multi-Purpose Colorlight Signal Assemblies for 8-3/8" Signal Units
With
With
Signal
Glass
Type of
Mounting
Type
Head
Aspects (1)
Lenses
Hood
Base
Incand.
3
G-Y-R
X
Std.
X
Incand.
3
G-Y-R
X
Snow
X
Incand.
4
G-Y-R-L
X
Std.
X
Incand.
4
G-Y-R-L
X
Snow
X
LED
3
G-Y-R
-Snow
X
LED
3
G-Y-R
-Std.
X
LED
4
G-Y-R-L
-Std.
X
LED
4
G-Y-R-L
-Snow
X
See Note (2)
1
Note (3)
-Std.
X
See Note (2)
2
Note (3)
-Std.
X
See Note (2)
3
Note (3)
-Std.
X
See Note (2)
3
Note (3)
-Snow
X
See Note (2)
4
Note (3)
-Std.
X
See Note (2)
4
Note (3)
-Std.
X
Note (1): G=Green (Cyan), Y=Yellow (Amber), R=Red, L=Lunar (White)
Note (2): Can be equipped with incandescent or LED signal units.
Note (3): Signal unit aspects installed per customer requirements.
Multi-Purpose Colorlight Signal Assembly
Key Components (1)
8-3/8" Red LED Signal Unit
8-3/8" Cyan (Green) LED Signal Unit
8-3/8" Amber (Yellow) LED Signal Unit
8-3/8" Lunar (White) LED Signal Unit
6-3/8" Red LED Signal Unit
6-3/8" Cyan (Green) LED Signal Unit
6-3/8" Amber (Yellow) LED Signal Unit
6-3/8" Lunar (White) LED Signal Unit
Driver Protection Board - Left
Driver Protection Board - Right
Constant Current Regulator Module
Signal Head Mounting Base Assembly
Note (1): Refer to RSE-1B2 to order 4000-series
MicroLok Object Controller, or RSE-1D2 to
order MicroLok II LED 12 PCB.
With
Doors
X
X
X
X
----X
X
X
X
X
X