Rotary Motion Electric Actuator PRP-2

Rotary Motion Type

Transparent image of PRP-2

High torque 600 N·m
Planetary gear mechanism for speed reduction realizes the high torque of 600 N·m despite its compact size.
Long life and high precision
Stepping motor drive realizes long life and high precision control.
Manual handle locked during motor operation
The worm gear for manual operation is locked to prevent the manual handle from turning during normal operation.
Open network optional
HART 7
Under development

Planetary gear mechanism

A planetary gear mechanism consists of two gears (the “planet”) revolving around the center of the other (the “sun”), just like the planets revolve around the sun. A planetary carrier connects to the centers of the two planetary gears and rotates, to rotate the output shaft of the mechanism in turn.
The planetary gear mechanism can yield higher torque with a smaller number of gears compared from that required by a combination of spur gears, resulting in compact size and small backlash.
Stepping motor

The drive section employs a stepping motor featuring no mechanical contact structure and long life. The minimum rotating angle of the motor is 1.8 degrees per pulse, enabling high accuracy opening control.
Thermal control

The motor control circuit board is separated from the other electronic circuits. The heat dissipation efficiency of the board itself is also improved.
Endurable gear mechanism

Dry bearings needing no lubrication are employed to balance robustness of the bearings and high reliability/long life.
Potentiometer for position detection

The class of potentiometer typically used for industrial vehicles or construction machines is used to realize vibration resistance, high quality and long life.


Model	PRP-2
Rotation Angle	90°
Torque	600 N･m
Operation Time	50 sec. (90°), 34 sec. (90°), Specified time (refer to the instruction manual)
Input	4 – 20 mA DC or 1 – 5 V DC
Power Input	100 – 120 V AC (Not selectable for CE) or 200 – 240 V AC
Degree of Protection	IP66
Wiring conduits	G 1/2 female thread (two)
Drive	Stepping motor
Position detection	Potentiometer (conductive plastic type)
Manual operation	Yes
Position Signal	4 - 20 mA DC
Operating Temperature	-20 to +55°C (-4 to +131°F)
Vibration: Passed test condition below (Fixed frequency endurance test, Sweep endurance test) / Acceleration	2 G (19.6 m/s²)
Weight	Approx. 26.5 kg (58.42 lb)
Linearity resolution adj.	1/300 to 1/1000
Accessories	Programming Unit Model: PU-2A