lps datasheet - v1 - electric and hydraulic actuators

LPS

PAGE 1 OF 7 November 2019 ELTORQUE

Eltorque LPS

For single-acting actuator (Quarter-turn)

LPS


LPS description

The LPS (Local power unit for single acting) is designed for controlling spring closing and opening actuators. Oil pressure is used for opening the actuator by pressing the springs together. Closing actuator by means of mechanical springs. The LPS is an integrated electro-hydraulic system for remote control of valves and actuators, and which is especially developed for mounting directly on valve actuators, primarily on board ships.

The LPS consists of a hydraulic pump which is driven by a squirrel-cage motor with interface functions. The LPS offers installation in both safe and hazardous area in two basic versions: −− LPS for safe area −− EX LPS for hazardous area

LPS features

−Due to incompressibility of hydraulic medium used, zero system leak and high holding pressure give the electro-hydraulic actuator with relatively high accuracy of valve positioning. −The indicator can clearly identify the open and closed position.

−Wiring is safe and convenient. −Standardized wiring interface. −Ease of commissioning and filling oil −Low energy consumption.

LPS main data

Applications: Single acting hydraulic actuator Working pressure: 130 bar Max. working pressure: 160 bar Oil connection nozzle: BSPP1/4" Safety valve pressure: 130 bar (max. WP is 160 bar) Max. running time: Up to 2 min. dependent on ambient temperature Enclosure rating: IP68 (10m in 72 hours) Test pressure: 230bar Ambient temperature : -15℃ ~ +60℃（-25℃ to 70℃ on request） Tank volume: Approx. 300-600CC or 800-2500CC Weight: 20kg (200W)/ 40kg (750W) House material: Aluminum alloy die-casting Hydraulic oil: Viscosity range: 15 - 64 cSt Power supply: 230V/380 AC 50 or 60 Hz ± 10% , dual 230VAC

50 or 60 Hz ± 10% Motor power: 200W or 750W Valve position indicator:

Option 1: Limit Switch (actuator dry installation, Limit Switch used for on/off type). Option 2: Pressure sensor/ Flow-meter at LPD (actuator submerged).

Class of motor work: S3-10%(200W), S2-10%(750W)

Hydraulic diagram for LPS

1- Limit switch

2- Single acting hydraulic actuator 3- Solenoid valve 4- Non-return valve 5- Relief valve 6- Test connector 7- Hydraulic pump 8- Motor 9- Filter 10- Stop valve 11- Hand pump

LPS


Operation LPS

1-The valve open/closed control signals are from the external control cabinet. 2-Open the valve: The local power unit receives the signal to open the valve, and the motor starts the hydraulic pump to provide the power oil for the actuator "open valve" oil port until the actuator is fully opened. Then the valve position feedback device sends the signal to control system to cut off the motor power and sends the "valve open" signal to the external control cabinet. 3-Close the valve: The local power unit receives the signal to close the valve, the solenoid valve is de-energized. The springs then move the actuator, pressing the oil back from the actuator oil port, through the solenoid valve to the LPS tank. Then valve position feedback device sends the "valve closed" signal to the external control cabinet.

4-Valve-position fault: When the local power unit loses power, signal or oil pressure, the springs push the piston to close the valve. 5-Valve-jammed alarm: When the local power unit receives the valve open or close signal, and the valve can’t be fully open or closed, the control

system will cut off the power supply to motor through the preset time relay in the control system, and simultaneously sends out the alarm signal. 6-Emergency local operation: the local power unit has the emergency operation interface. In the case of "three-lose", the valve can be opened through the emergency hand pump.

Cable gland Application Thread Number Cable min. Φ Cable max. Φ IP Note

CANopen(Power) M25*1.5 4 13mm 18mm 68

CANopen(Signal) M20*1.5 3 8mm 14mm 68

Digital(Power) M25*1.5 2 13mm 18mm 68

Digital(Signal) M20*1.5 3 8mm 14mm 68

LPS controls

The LPS is designed with interfaces to CANopen, dual CANopen or Digital control systems.

Emergency operation of LPS

With portable hydraulic hand pump A portable hand pump is connected to the one quick connector. When reaching the required position, the hand pump can be disconnected. If the valve must be emergency operated towards closed, the cross-over valve on the actuator is open until the required position is reached. When the valve is fully closed, the shuttle valve will reset. With fixed hydraulic hand pump Opening: Hand pump is activated until the required valve position is reached. Closing: The valve moves towards closed by opening the bypass valve in the hand pump block.

Note! After emergency operation, remote control is automatically resumed.

LPS


Electrical LPS

(1) For the Digital interface LPS, 1Ph 230V AC 50/60 power supplied from the external control cabinet or shipyard and uses max 3 x 4.0 mm² power cables. 7 x 0.75 mm² cables containing motor control and position indication signals are connected between the external control cabinet and each local power unit. (2) For the Digital interface LPS, 3Ph 380V AC 50/60 power supplied from the external control cabinet or shipyard and uses max 4 x 4.0mm² power cables. 7 x 0.75 mm² cables containing motor control and position indication signals are connected between the external control cabinet and each local power unit. (3) For the CANopen interface LPS, 1Ph 230V AC 50/60 power supplied from the external control cabinet or shipyard and uses max 3 x 4.0 mm² power cables. 2x0.75 +0.75mm² cables containing motor control and position indication signals are connected between the external control cabinet and each local power unit.

(4) For the CANopen interface LPS, 3Ph 380V AC 50/60 power supplied from the external control cabinet or shipyard and uses max 4 x 4.0 mm² power cables. 2x0.75 +0.75 mm² cables containing motor control and position indication signals are connected between the external control cabinet and each local power unit. (5) The motor/pump starts by means of control interface - open or close. If the pressure exceeds 130 bar for 7 sec. the timer stops the motor/pump. This circuit ensures a high safety on the LPS.

LPS electrical diagram

(Digital single power 230VAC)

LPS wiring diagram




LPS wiring diagram


LPS



(CANopen single power 230VAC)

LPS wiring diagram

(CANopen single power 230VAC)

LPS electrical diagram (CANopen dual power 230VAC)

LPS wiring diagram (CANopen dual power 230VAC)

LPS electrical diagram (CANopen single power 380VAC)

LPS wiring diagram (CANopen single power 380VAC)

LPS



(CANopen dual power 380VAC)

LPS wiring diagram

(CANopen dual power 380VAC)

Dimensions LPS

LPS dimensions (normal used for ESQ160, ESQ350, ESQ900, ESQ2000)

LPS dimensions (option: ESQ2000)

Mounting on hydraulic actuators

Direct mounting on double hydraulic actuator HSQ160-2000, and the specific dimensions of LPS mounted on the hydraulic actuator HSQ are shown in the table below.

Note! Oil level must be checked before starting up the LPS. The LPS may be emergency operated as if mounted direct on actuator.

LPS


Operating speed

The operating duration can be calculated from the oil displacement of the actuator.

Actuator type Hydraulic actuator oil displacement(L)

Min. operating time(sec.) open/close for LPS

Gear pump flow and power (normal)

ESQ160 0.1 11 0.52L/min, 200W

ESQ350 0.2 24 0.52L/min, 200W

ESQ900 0.6 70 0.52L/min, 200W

ESQ2000 1.3 150 0.52L/min, 200W

Please note that Min. time is calculated value. ESQ spring and value difference can change the actual time. Dimensions LPS on HSQ actuator

LPS dimensions (normal used for ESQ160, ESQ350, ESQ900, ESQ2000)

LPS dimensions (option: ESQ2000)

Series Size L1 L2 L3 L4 H S x S T ISO5211 Oil

connector Torque

Working pressure

ESQ160 150 115 340 140 150 22x22 30 F07 G1/4″ 160N.m 130 Bar

ESQ350 175 145 485 165 155 27x27 36 F10 G1/4″ 350N.m 130 Bar

ESQ900 230 205 740 235 205 46x46 50 F14 G1/4″ 900N.m 130 Bar

ESQ2000 270 220 830 260 214 46x46 50 F16 G1/4″ 2000N.m 130 Bar

lps datasheet - v1 - electric and hydraulic actuators

Documents