Motorized Potentiometers and Rheostats
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Motorized Potentiometers and Rheostats Motorized Potentiometers Motorized Rheostats Hardware Reference Document 1101069 - Edition June 2009

Motorized Potentiometers and Rheostats Hardware Reference 1 General Description Function and applications : Motorized potentiometers and rheostats (MPR) are modules designed to remotely control the angular position of a shaft. These modules are suited for remote control applications or regulation functions, especially under harsh environmental conditions. Motorized rheostats are used when a higher level of output power is required. Description: The MPR modules have the following structure: They include : • a DC or AC gear-motor B, • an optional rotary knob J to adjust the angular position...

Motorized Potentiometers and Rheostats Hardware Reference Cams may be mounted in two different ways: "A" type cam hub: hub held to the shaft by 2 screws (factory adjusted) "B" type cam hub: one piece clamping collar (allows adjustments) The cam type is specified by the letter of the profile type followed by the letter corresponding to the type of mounting; for example : A/A cam, adjustable B/A cam. Terminal connections: Various types of terminal connections may be provided, the most common used are: • screw terminal block: M3 screws • faston terminal strip 6.35 mm or solder lug terminal...

Motorized Potentiometers and Rheostats Hardware Reference 3 Examples of designs 3.1 Motorized Potentiometer with DC Motor Open frame module including : • a 24 VDC gear-motor • a precision wirewound potentiometer: SI15 model • 4 rotary cam switches: - 1 start-of-travel switch / A/A profile cam - 1 end-of-travel switch / A/A profile cam - 2 contacts/adjustable B/A profile cam The module is designed for: • a rotation angle of 300° (adjustable) • a cycle time between 42 to 60 seconds, adjustable by a voltage divider resistor with a T16 rotary rheostat Shown model : TCSI15-1KC171 3.2 Motorized...

Motorized Potentiometers and Rheostats Hardware Reference 3.3 Motorized Rheostat with DC Motor Open frame module including: • a 125 VDC gear-motor • a rotary rheostat: T150 model • 6 rotary cam switches: -2 end-of-travel switches / A/A profile cam -3 beginning-of-travel switches / A/A profile cam -1 mid-travel switch/adjustable B/A profile cam The module is designed for: • a rotation angle of 300° (adjustable) • a cycle time between 36 and 160 seconds, adjustable by a voltage divider resistor with a RCA6 model Shown model: TCT150MLR500C146 3.4 Motorized Rheostat with AC Motor Open frame...