RPS-401A, RPS-426A Analog Ultrasonic Sensors - Migatron - #1

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Migatron Corporation - 1997 401AF Adjustable Zero & Span Various Sensing Ranges Narrow Sensing Beam LED Strength Indicator Short Circuit Protected Reverse Polarity Protected Analog Current & Voltage Outputs Selectable Inverted & Non-Inverted Outputs Self Contained Barrel Housing Input Voltage 20 - 30VDC RPS-401A in Plastic Housing RPS-426A in Stainless Steel Housing RPS-401A, RPS-426A Features Inverted Analog Outputs The RPS-401A has the ability to invert its analog outputs, meaning that the current or voltage will decrease with distance. For the current output to be inverted the voltage output needs to be tied to the positive of the supply voltage of the sensor. This then will invert the current output to 20mA - 4mA. To make the voltage output inverted 10v - 0v the current output needs to be tied to the positive of the supply voltage. In the standard mode of operation (non-inverted) P1 adjusts the near point 4mA (0v) and P2 adjusts the far point 20mA (10v). In the nonstandard mode of operation (inverted) P1 adjusts the near point 20mA (10v) and P2 adjusts the far point 4mA (0v). Maximum Analog Ranging Analog sensing in the Maximum ranging configuration means detecting an object over a 36" range with the RPS-401A-40. This 36" span goes from the sensors minimum sensing distance (4") to its maximum sensing distance (40"). The adjustment procedure is the same as described in the minimum analog ranging section. The RPS-401A-80 and RPS-426A- 80 in the maximum ranging configuration detect an object over a 72" range. This span goes from the sensors minimum sensing distance of 8" to its maximum sensing distance of 80". This sensor also has a 5 : 1 adjustment ratio on its analog output so its minimum analog ranging capability is a span of 12". These adjustments are made by the two potentiometers on the sensor. Minimum Analog Ranging Analog sensing in the Minimum sensing configuration means detecting an object over a 5" range with the RPS-401A-40. This 5" span can be adjusted to occur over any part of the sensors range. For example it could be adjusted to occur from 10" to 15" or 25" to 30". This is done by means of the two potentiometers on the sensor. This sensor has a 5 : 1 adjustment ratio on its analog output, meaning that the RPS- 401A-40 has a maximum span of 36" (range 4" to 40"). The analog output can also be adjusted anywhere between the 5" and 36" spans. These adjustments are made by the two potentiometers on the sensor. With no more then two adjustments of each potentiometer the desired range will be achieved. 10" Adjustable 24" Adjustable 4" Adjustable 8" 40" 80" 0v 4mA 10v 20mA 0v 4mA 10v 20mA 10v 20mA 0v 4mA 4" 40" 12" 8" 80" 15" 40" Range 80" Range 40" Range 80" Range 80" Range 40" Range The RPS-401A, RPS-426A analog ultrasonic sensor is mounted in a barrel housing and is completely self contained. It is powered by 20-30VDC and is reverse polarity protected. It also has a narrow beam angle which enables it to get into tight places. A flat target can tilt up to 8 degrees and still be detected. The RPS-401A, 426A has 2 short circuit protected analog outputs, 4-20mA and 0-10 VDC. These outputs can easily be inverted and can be scaled over almost any range by means of adjusting the zero (P1) & span control (P2). For set-up purposes an LED strength indicator is provided. This LED is Green when not detecting and fades to Red as a target moves into place, depending on how much reflected signal is coming back from the target. The frequency of operation for the RPS-401A is 212kHz for the 4" to 40" and 150kHz for the 8" to 80". The RPS-426A has a 8" to 80" range and operates at a frequency of 150kHz. The RPS-401A barrel is constructed of plastic valox, and the RPS-426A is Stainless Steel. The barrel measures 30mm x 100mm. A standard 6' cable is provided. An optional quick disconnect plug is available. -27-