PSL series linear intelligent electric actuatorDetailed product description：

Overview

The PSL series linear intelligent integrated electric actuator is small in size, light in weight, strong in function, equipped with an intelligent operator, and easy to operate. The PSL series linear electric actuator has a maximum stroke of 100mm and a maximum thrust of 25KN, making it suitable for valve switching or adjustment control in linear motion.

Features

1. Integrated structural design, the position transmitter and servo amplifier can be directly installed inside the actuator as two independent components, directly receiving 4-20mA control signals and outputting 4-20mA or 1-5VDC valve position feedback signals. It has self diagnostic function and is very convenient to use and calibrate.
2. Functional modular structure design, through the combination of different optional functions, achieves control from simple to complex, meeting different application requirements.
3. The structure is simple, compact in size, lightweight, easy to install and maintain, and all mechanical parts are made by CNC machining with exquisite craftsmanship.
4. The transmission adopts small backlash sealed gears, which have high efficiency, low noise, long service life, stability and reliability, no need for refueling, and multiple operating speeds to meet the requirements of various control systems, ensuring fast response and stability of the system
5. The connection with the valve adopts a flexible coil spring connection, which can avoid the influence of the valve stem and output shaft being different from each other on the valve. The valve closing force can be pre-set to ensure the reliable closing of the valve and prevent leakage. Adjustable stroke for easy connection with valves.
6. The driving motor is a high-speed synchronous motor made of high-performance rare earth magnetic materials, which runs smoothly. It has the characteristics of small size, high torque, anti blocking, and high control accuracy.
7. Segmented adjustment can be set, that is, the dual time proportional signal output by one regulator controls two actuators (4-12mA corresponds to fully open or fully closed PSL1, 12-20mA corresponds to fully open or fully closed PSL2).
8. The valve position feedback component adopts a fully sealed high-precision multi turn potentiometer, which has the characteristics of small volume, high accuracy, small dead zone, and long service life. All electrical components are made of world-renowned brand products with reliable quality. The wiring of electrical components is rigorous and completely isolated from transmission components, which improves the reliability of the operation of the actuator.

PSL series straight stroke intelligent electric actuator structure
The PSL linear actuator is mainly composed of isolated electrical control parts and gear transmission parts. As an intermediate component connecting two isolated parts, the motor outputs torque according to control requirements, which is transmitted to the trapezoidal screw through a multipole spur gear. The screw converts torque into thrust through rod threads. This rod thread can self lock and transmit linear travel to the valve stem through an adapter with the valve. The actuator shaft is equipped with a stop pin to prevent rotation, and the radial locking device of the shaft can serve as a position indicator. The locking device is connected to a connecting rod that runs synchronously with the output shaft. The displacement of the output shaft is converted into an electrical signal through a circuit board connected to the connecting rod, which is provided to the servo amplifier as a comparison signal and valve position feedback output. At the same time, the stroke of the actuator can also be limited by two main limit switches on the switch board, and the limit position can be adjusted by two mechanical limit blocks.

Main technical parameters

Standard	thrust	Speed	maximum	Power supply (v)	Power consumption (w)	Motor protection	Outgoing connection	Manual	protection	Weight
Model number	(KN)	(mm/s)	Travel distance mm					Operation	Level	(kg)
PSL201	one	0.4/1.2	fifty	220VAC	thirty-five	Allow blockage	2×M20×1	Handwheel	IP67	five point five
PSL202	two	0.4/1.2	fifty	220VAC	forty	Allow blockage	2×M20×1	Handwheel	IP67	five point eight
PSL204	four	0.4/1.2	fifty	220VAC	forty-five	Allow blockage	2×M20×1	Handwheel	IP67	six
PSL208	eight	one	sixty	220VAC	eighty	Allow blockage	2×M20×1	Handwheel	IP67	eight
PSL210	ten	one	sixty	220VAC	eighty	Allow blockage	2×M20×1	Handwheel	IP67	eight point two
PSL312	twelve	one	sixty-five	220VAC	one hundred and thirty	Thermal switch	3×M20×1	Handwheel	IP65	twenty-two
PSL314	fourteen	one	sixty-five	220VAC	one hundred and thirty	Thermal switch	3×M20×1	Handwheel	IP65	twenty-two
PSL316	sixteen	one	one hundred	220VAC	one hundred and thirty-five	Thermal switch	3×M20×1	Handwheel	IP65	twenty-two
PSL320	twenty	one	one hundred	220VAC	one hundred and forty	Thermal switch	3×M20×1	Handwheel	IP65	twenty-three
PSL325	twenty-five	one	one hundred	220VAC	one hundred and forty	Thermal switch	3×M20×1	Handwheel	IP65	twenty-three

Intelligent controller PSAP4

PSAP4 is an intelligent proportional servo circuit for PS electric actuators, which adopts SMT technology and has the characteristics of small size and high reliability. This circuit will control the 4-20mA current signal of the electric actuator, compare it with the current position signal of the actuator, and control the opening or closing action of the actuator according to the deviation situation, so as to balance the position of the actuator with the input signal.
PSAP4 not only implements the action of the actuator with the input 4-20mA signal, but also provides a set of 4-20mA position signals isolated from the working power supply and input signal to the system.
PSAP4 can easily adjust the starting position and stroke of the actuator; Can easily switch between positive and negative effects; Set the actuator to fully open, fully closed, or hold state when the input signal fails.

Working Principle
The position signal conversion circuit converts the variation of the 1000 ohm three wire sliding resistance signal reflecting the position of the actuator into 4-20mA. The control input and position signal are simultaneously sent to the deviation amplifier for comparison, and the comparison result controls the on/off of the solid-state switch, achieving on/off control of the actuator. Adjusting sensitivity according to control requirements can change tracking accuracy and eliminate oscillations that may occur due to mechanical inertia.

Technical parameters of PSL series linear intelligent electric actuator

Power supply voltage	AC220V 50Hz
Power consumption	5VA
Switch capacity	150VA（24V 50VA）
Input signal	4-20mA or 1-5V
Input impedance	250 Ω or 500 Ω
Output signal	≤ 650 Ω at 4-20mA
Insulation resistance	Main circuit control circuit: 100M Ω (500VDC); Control circuit output circuit: 100M Ω (500VDC); Output circuit one main circuit: 100M Ω (500VDC)
Repetitive accuracy	±1%
Sensitivity	±（0.5-5%）F.S
Lag	50% sensitivity
Environmental temperature	-20℃～＋70℃
Storage temperature	-30℃～＋50℃

Additional travel (2WE) and additional torque (2DE) switches
The additional travel (2WE) and additional torque (2DE) switches are paired with two additional switches, which can output two passive contact signals (220VAC 5A) when the actuator reaches the appropriate position or torque.

Single/Dual Valve Position Feedback Potentiometer (POT/POT2)
Output 1 group (POT) or 2 groups (POT2) of 0-1000 Ω resistance signals corresponding to the same valve position value, as the valve position feedback input signal of the servo amplifier or transferred to the instrument for valve position display.  

Heating resistor (HR)
Installed inside the actuator to maintain a certain temperature, in order to avoid frost formation and damage to the electrical components of the actuator when used at low temperatures (below -20 ℃).  

Independent position transmitter PSMF
When no built-in servo amplifier is required and only 4-20mA valve position signal needs to be output, choose

Other optional application components

Function	Order code	Explanation
Special voltage	PSMS	115/24VAC； 380V 3-phase; 24VDC
High IP protection level	PSMP	Protection level higher than the standard type
On site control	PSML	Realize remote and local switch switching and local on/off/stop actuator
Execution mechanism failure safety self-protection	PSMR	Fault safety self-protection mode, which releases mechanical energy to drive the valve to a safe position after a fault occurs.

Electrical wiring
Switch action mode
Input: Motor rotates forward, reverse phase line: and neutral line; Output: 4-20mA feedback signal; (Open the casing to see the schematic diagram. There are terminal strips inside the actuator casing for electrical wiring. Choose an appropriate power cord to connect to the actuator, and it is recommended to use a Φ 1.0 (mm) wire.)

Adjust the action mode
Input: 4~20mA, 1~5V; Output: 4-20mA feedback signal; (Open the casing to see the schematic diagram. There are terminal strips inside the actuator casing for electrical wiring. Choose an appropriate power cord to connect to the actuator, and it is recommended to use a Φ 1.0 (mm) wire.)

PSL series linear intelligent electric actuator