2-speed valve Hägglunds VTCA 600Includes valves for ATEX environment

Производитель Bosch Rexroth представляет двухступенчатый клапан VTCA 600. Этот продукт предназначен для использования в условиях ATEX (атмосферы, взрывоопасной по газу и пыли). 

Клапан VTCA 600 имеет две ступени, чтобы регулировать поток жидкости или газа с высокой точностью. Это устройство обеспечивает надежное и эффективное управление потоком в системах, работающих во взрывоопасных средах.

Данный клапан соответствуют стандартам ATEX и имеет сертификаты, подтверждающие их соответствие требованиям безопасности. Это оборудование обладает высокой степенью защиты от взрыва и взрывоопасных ситуаций, что делает их идеальным выбором для использования в опасных условиях.

Клапаны производятся из высококачественных материалов, которые обеспечивают их надежную и стабильную работу даже в самых экстремальных условиях.
 

Description

• Valid for: Hägglunds motors CA
• Maximum flow 600 l/min
• For closed and open loop hydraulic system

Features

• Displacement shift for Hägglunds CA motor
• Compact and robust design
• Multifunctional
• Can be mounted directly on Hägglunds motors
• Built in brake control function
• Exchange of oil in motor case
• Possibility for internal control pressure

Product description

General

Hägglunds Compact CA 50-210 motors in 2-speed configuration in combination with VTCA 600 valve can shift displacement from full to half displacement while running up to 30 rpm and high pressure maximum 105 bar. Displacement shift from half to full displacement is not allowed while the motor is rotating.

Shifting from full to half displacement means that 25% of the pistons are provided with high pressure and 75% of the pistons are provided with low pressure. This resulting in twice the speed and half the output torque compared to full displacement. The valve can be mounted directly onto the motor and can be used in both open and closed loop systems.

When ordering a motor prepared for 2-speed function the main rotation, clockwise (R) or counter clockwise (L), has to be specified. With wrong direction, load on the piston will be increased 3 times, which can give overheating of the pistons.

With the flow inlet connected to P (A-port on motor), the motor shaft rotates in the directions shown by arrows. (see Figure "Motor prepared for valve, direction of rotation, Counterclockwise = L" and Figure "Motor prepared for valve, direction of rotation, Clockwise = R") R-motor rotates clockwise, and L-motor counter-clockwise, viewed from the motor shaft side. If the motor is working in half displacement, and in reversed "direction of rotation", is the allowed pressure max 210 bar.

For higher speed, two valves can be used, one standard valve and one S-index 05 valve (mirrored inverted). Maximum operating pressure is 350 bar and maximum flow 600 l/min. When using a 2-speed motor, check the system temperature due to higher pressure loss, flushing may be necessary and 2-speed applications for motors with reduced displacements are not recommended.

The valve is available in five main configurations:

• VTCA 600 0 H: Hydraulic operated displacement shift.

• VTCA 600 0 H S-index 05: Hydraulic operated displacement shift. Two valves.

• VTCA 600 0 E: Electric operated displacement shift, 24 VDC.

• VTCA 600 E S-index 05: Electric operated displacement shift, 24 VDC. Two valves.

• VTCA 600 B E: Electric operated displacement shift with brake control function, 24 VDC.

Motor prepared for valve, direction of rotation, Counterclockwise = L

Motor prepared for valve, direction of rotation, Clockwise = R

Function

Valve VTCA 600 0 H 0 and VTCA 600 0 H 1

Hydraulic operated valve.

The displacement shift function is controlled by a directional valve (2), see Figure "Hydraulic Circuit for VTCA 600 0 H 0, VTCA 600 0 H 0 S-index 05, VTCA 600 0 H 1 0 and VTCA 600 0 H 1 0 S-index 05", which is kept in the full displacement position by spring action. The control pressure for the directional valve is obtained from an external source through port “Pc“.

Valve VTCA 600 0 E 0 and VTCA 600 0 E 1

Electrical operated valve

The displacement shift function is controlled by a directional valve (2), see Figure "Hydraulic Circuit for VTCA 600 0 E 0 ,VTCA 600 0 E 0 S-index 05, VTCA 600 0 E 1 and VTCA 600 0 E 1 S-index 05", which is kept in the full displacement position by spring action. The control pressure for the directional valve is controlled by an electrical operated directional valve (3) see Figure "Hydraulic Circuit for VTCA 600 0 E 0 ,VTCA 600 0 E 0 S-index 05, VTCA 600 0 E 1 and VTCA 600 0 E 1 S-index 05". The control pressure is obtained from an external source through port “Pc“ or internally from “P“.

Using internal control pressure from “P“ (Only VTCA 600 0 E)

The VTCA 600 valves are at delivery prepared for control pressure connection at “Pc“. In case of electric operated valve (VTCA 600 0 E), the control pressure can be obtained internally from “P“ by following instructions below and Figure "Using internal control pressure from “P“ (Only VTCA 600 0 E)".

• Remove plug (B).

• Remove plug (010).

• Mount plug (B), tightening torque: 10 Nm.

• Install a plug at connection “Pc“, G 1/2“, Material ID: R913001725

Using internal control pressure from “P“ (Only VTCA 600 0 E)

Valve VTCA 600 B E 0 and VTCA 600 B E 1

Electric operated with brake function. (See Figure "Hydraulic circuit for VTCA 600 B E 0" and Figure "Hydraulic circuit for VTCA 600 B E 1")

The displacement shift function is controlled by a directional valve (2) which is kept in the full displacement position by spring action. The control pressure for the directional valve is controlled by an electrical operated directional valve (3), ISO 4401, included in delivery. The control pressure is obtained from an external source through port “Pc“.

Brake function

The brake function is electrical operated. The control pressure for the brake is controlled by two electrical operated directional valves (3 and 6), and the brake is connected to connection “BR“. The control pressure is obtained from an external source through port “Pc“.

Brake off

When the electrical operated directional valves are open, the pressure from “Pc“ shifts the directional valve (4), check valve (5) is closed and the pressure are guided to “BR“ and the brake release.

Brake on

When the electrical operated directional valve (3) is closed, the directional valve (4) shifts and the check valve (5) opens. Spring pressure in the brake cylinder pushes then oil to tank and the brake applies.

Exchange of oil in motor casing

VTCA 600 0 H 1, VTCA 600 0 E 1 and VTCA 600 B E 1 are prepared for exchange of oil in motor casing. Nominal oil exchange, with an orifice with a Ø 2 mm hole, is 12 l/ min at a pressure in “C“-line of 25 bar.

High internal pressure in motor case Risk of damage motor. Make sure that an external draining line is connected to one of the external drain connections D1, D2 or D3 on the motor.

The VTCA 600 0 H 0 and VTCA 600 0 E 0 valves are, at delivery not prepared for exchange of oil in motor case. Port (8) is plugged, and port (9) is not plugged.

See also hydraulic circuits Figure "Hydraulic Circuit for VTCA 600 0 H 0, VTCA 600 0 H 0 S-index 05, VTCA 600 0 H 1 0 and VTCA 600 0 H 1 0 S-index 05" and Figure "Hydraulic Circuit for VTCA 600 0 E 0 ,VTCA 600 0 E 0 S-index 05, VTCA 600 0 E 1 and VTCA 600 0 E 1 S-index 05".

The valve can be prepared for exchange of oil in motor case by following instructions and Figure "Exchange of oil in motor case for VTCA 600 0 H 0 and VTCA 600 0 E 0".

• Replace the plug (008), M8, with an orifice, material ID R939055162

• Install plug (009), R3/8˝, material ID R913053036.

• Lock the plugs with Loctite 577 or similar.

Exchange of oil in motor case vs pressure in C-line with orifice D = 2 mm

Exchange of oil in motor case for VTCA 600 0 H 0 and VTCA 600 0 E 0

Hydraulic Circuit for VTCA 600 0 H 0, VTCA 600 0 H 0 S-index 05, VTCA 600 0 H 1 0 and VTCA 600 0 H 1 0 S-index 05

Hydraulic Circuit for VTCA 600 0 E 0, VTCA 600 0 E 0 S-index 05, VTCA 600 0 E 1 and VTCA 600 0 E 1 S-index 05

Hydraulic circuit for VTCA 600 B E 0

Hydraulic circuit for VTCA 600 B E 1

Type code

ln order to identify Hägglunds equipment exactly, the following ordering code is used. These ordering codes should be stated in full in all correspondence e.g. when ordering spare parts.

Load drop Danger to life or risk of injury, damage to equipment! Charge pressure at the motors connection, must be according to graph (see chapter "Technical data" - section "Required charge pressure") under all conditions Valve version VTCA 600 X X X X XX 05, mirror inverted, is not allowed to be used in suspended load application

Technical data

General data

Explosion protection information, hydraulic operated VTCA 600

Pressure loss diagram

Pressure loss main circuit P - C at full displacement for standard valve (motor and valve included)
Viscosity 40 mm²/s

Pressure loss main circuit P - C at half displacement for standard valve (motor and valve included)
Viscosity 40 mm²/s

Pressure loss main circuit P - C at full displacement for standard valve + S-index 05 valve (motor and valve included)
Viscosity 40 mm²/s

Pressure loss main circuit P - C at half displacement for standard valve + S-index 05 valve (motor and valve included)
Viscosity 40 mm²/s

Required charge pressure diagram

Required charge pressure when running in half displacement for standard valve (Motor and valve included)

Required charge pressure when running in half displacement for standard valve + S-index 05 valve (Motor and valves included)

Dimensions

Dimensions VTCA 600 0 H 0 0 0 00, VTCA 600 0 H 0 1 0 00

Dimensions in mm

Dimensions VTCA 600 0 E 0 0 0 00

Dimensions in mm

Dimensions VTCA 600 0 H 0 0 0 05, VTCA 600 0 H 0 1 0 05

Dimensions in mm

Dimensions VTCA 600 B E 0 0 0 00

Dimensions in mm

Dimensions VTCA 600 0 E 0 0 0 05

Dimensions in mm

Mounting

Installation

Fitting the VTCA 600 valve on Hägglunds CA

Refer also to the Installation and Maintenance Manual RE 15302-WA.

Contamination of the system! Risk of damage components. Clean all mounting surfaces before assembly!

• Remove the SAE flanges from motor mounting surface and the plastic plugs from the valve mounting surface.

• Place the O-rings (included in delivery) in their proper position on the valve mounting surface.

• Use clean grease to keep O-rings fixed during assembly.

• Mount the valve against the motor with the ports in the correct position.

• Re-instate paint finish and protect exposed surfaces.

Hägglunds CA

Installation drawing

Installation drawing – VTCA 600 0 H, VTCA 600 0 H S-index 05

Refer to dimensional drawing: 278 2204, 041 0460

Installation drawing – VTCA 600 0 E, VTCA 600 0 E S-index 05

Refer to dimensional drawing: 278 2205, 041 0459

Installation drawing – VTCA 600 B E

Refer to dimensional drawing: 278 2206

Electrical installation

Circuit diagram standard terminal box

Information

Required and additional documents

Documents at Bosch Rexroth Media Directory

Safety Instructions

Warning signs

In this manual you will find the following signs which indicate a potential hazard, which can or will cause personal injury or substantial property damage. Depending on the probability if the hazard, and how serious the injury or property damage could be, there are three levels if classification.

The signal words have the following meaning:

Warning sign, signal word	Meaning
	Indicates a dangerous situation which will cause death or severe personal injuries if not avoided.
	Indicates a dangerous situation which may cause death or severe personal injuries if not avoided.
	Indicates a dangerous situation which may cause minor or medium personal injuries if not avoided.
	Material damage: the product or its environment could be damaged.

General safety instructions

Danger from excessively high pressure! Danger to life or risk of injury, damage to equipment! Using the valve above the permissible maximum pressure can cause valve burst and hydraulic fluid to escape under high pressure. Use the valve within the permissible maximum pressure.
Pressurized valve Danger to life risk of injuries when working on valve in system not being depressurized. Protect the system against being energized. Make sure that the system is depressurized. Do not disconnect any line connection, ports and components when the system is pressurized.

Safety instructions for ATEX environment

Unsafe work on the valve Danger to life or risk of injury, damage to equipment! Before carrying any work on the valve, firstly make sure that a potentially explosive atmosphere cannot occur during the period of the work.

Escaping oil mist! Risk of explosion, fire health hazard, environmental pollution. Depressurize the system including valve and repair the leak. Keep open flames an ignition sources from the Hägglunds valve.
Static discharge Cleaning the valve with a dry rug may lead to explosions through electrostatic discharge that may cause severe injuries and even death. Do not use a dry rug for cleaning.
Lack of grounding Risk of explosion that may cause severe injuries and even death. The valve must always be fitted to the motor or via adapter fitted to the motor. The valve must be electrically conductive and equipotential bonded with the motor which must be grounded to the system. The valve are not allowed to be fitted to any separate bracket without grounding of the valve.
Painting Risk of explosion that may cause severe injuries and even death. The valve must not be painted or otherwise coated with non-conductive substances! Any change at the surface protection will lead to loss of explosion protection!

Ordering codes

Downloads

2-speed valve Hägglunds VTCA 600 Data Sheet | RE15389 | 2018-02-01 | English | PDF | 1.4MB Product Groups: Hägglunds VTCA 600 Includes valves for ATEX environment