Migatron Corporation - 1997 401D
Proximity Detection Hysteresis Detection
RPS-401, RPS-426
Features
Proximity Detection
Proximity detection is the detection of an object at a given
distance. The detection range of the RPS-401,426 is controlled
by the "Range Control" potentiometer. Any object within the
desired range is detected, while objects out of range are ignored.
The range of the RPS-401 is either 4" to 40" or 8" to 80". The
range of the RPS-426 is 8" to 80" only. This means that in the
proximity mode the object will be detected from whatever de-
tect point is set to the minimum sensing range of the sensor
either 4" or 8". The hysteresis control needs to be off by turning
the potentiometer fully counterclockwise.
Hysteresis Detection
The RPS-401,426 is furnished with Hysteresis Control by
means of a second potentiometer. This control allows you to
adjust the turn-off point while the range control adjusts the turn
on point. (Example: Range pot set for 10", Hysteresis pot set
for 20". With these settings the sensor will detect when the
target reaches 10" and stays on as the target moves away to
20".) This Hysteresis can be adjusted from .5" to 40" from the
detect point with the 40" sensor and 1" to 80" with the 80"
sensor.
Adjustable Detect Pt. Adjustable Turn Off Pt.
4" to 40" or 8 to 80" .5" to 40" or 1" to 80"
8" 80"
40"4" Detect Pt.
Adjustable
The RPS-401 and 426 are stud-mounted, completely
self-contained, 20-30VDC powered ultrasonic sensors.
A sealed transducer provides protection in hostile envi-
ronments. The sensor can be operated in two modes a
proximity and a hysteresis mode, described below. The
frequency of operation for the RPS-401 is 212kHz for the
4" to 40" and 150kHz for the 8" to 80". The RPS-426 has
a 8" to 80" range and operates at a frequency of 150kHz.
These sensors also have built-in short circuit protection
for the outputs as well as reverse polarity protection on the
input. The construction of the RPS-401 sensor is Plastic
Valox and the RPS-426 is Stainless Steel. A barrel
housing is used 30mm in diameter by 100mm in length. For
-25-
Short Circuit Protected
Operates in Hostile Environments
Operating Voltage 20-30VDC
Isolated N.O. N.C. Solid State Relays
RPS-401 in Plastic Housing
RPS-426 in Stainless Steel Housing
Self Contained
Sensing Range 4-40", 8-80"
Narrow Sensing Beam
High Frequency
Range & Hysteresis Controls
Reverse Polarity Protected
set up purposes an LED indicator is provided. When not
detecting the LED will illuminate green and when detecting
the LED will illuminate red. The outputs consist of two solid
state relays N.O. N.C. which can switch 2-130VAC or
VDC up to 100mA DC or 50mA AC continuous. The relay
outputs are short circuit protected and isolated up to 1500
volts rms. A standard 6' cable is provided. An optional quick
disconnect plug is available.
