Category: Rexroth

Features:

– Ideal for controlling direct-acting and pilot-operated proportional pressure control valves without electrical position feedback

– Differential Inputs

– Additional command value input, 0 to +9 V

– Ramp generator with separately adjustable rising and falling ramps

– Clock current output stage

– Clock Current Output Stage Reverse Voltage Supply Polarity Protection

– Short circuit protection

Function Description

The command value voltage can be applied to command value input 1 directly or via an external command value potentiometer using the regulated voltage of + 9 V of the power supply unit [8].

For this input the following conditions are valid: + 9 V = + 100 % 1).

Command value input 2 is a differential input [1] (0 to + 10 V). This input must be used if the command value is fed forward from an external electronic device with another reference potential (e.g. from the PLC).

This input must be used. When cutting in or out the command value voltage, take care to connect the two signal lines to or disconnect them from the input.

Prior to transmission, the two command values are summed [2] and fed to the potentiometer [3], which is available on the front panel of the card and is used as an attenuator to limit the maximum command value.

The Downstream Ramp Generator [4] generates a ramp-shaped output signal from the step input signal. The time constant of this signal can be adjusted to ramp up and ramp down using two potentiometers.

The specified ramp time is related to the command value step change of 100% and can be about 1 sec. or 5 sec. depending on the jumper setting. If a command value step change of less than 100 % is applied at the input of the ramp generator or when the attenuator [3] is set, the ramp time can be adjusted upwards and downwards.

or when the attenuator [3] is active, the ramp time is shortened accordingly.

With the aid of the external contact “ramp up/down”, the ramp time can be set to a minimum value (approx. 30 ms) for the upper and lower ramp times respectively.

The output signal of the Ramp Generator [4] is an internal current command value and is fed into the measurement socket “w” on the front panel of the card.

In addition, the command value is transferred to the current output stage [6] via the current regulator [5].

The current regulator [5] adds the value of the bias current potentiometer “Zw” (R130) to the value of the ramp generator.

The current command value is modulated by the clock pulse encoder signal [7]. www.abb-drive.com The clocked actual current value acts like a constant current and superimposes a jitter signal in the valve solenoid.

The actual current value through the solenoid valve can be measured at socket “I”. Here, a voltage of 800 mV corresponds to a current of 800 mA.

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Applications

The “1-channel p/Q control card” consists of the basic card in Europe format with DC/DC converter and front plate. With the “2-channel p/Q control card”, this basic card contains a p/Q daughter card with identical circuit and a joint front plate.

The supply voltage is 24 V =. The voltage of the valve to be regulated is not supplied via this card.

Input variables for the cards are the valve position command value, the pressure command value, the actual pressure value and possible control mode signals. The pressure sensors with voltage interface receive their voltage supply from the card (z6/z8). At the card, pressure sensors with voltage and current signal can be connected.

The pressure command value can be specified by means of a potentiometer. The potentiometers can be supplied from the card (z32/b12).

For control and comparison, the front plate and the circuit board comprise www.abb-drive.com test points for the most important characteristics.

The circuit of the “2-channel card” is designed so that the controllers on basic and daughter card work in a completely independent manner. In this mode, the card is suitable for controlling 2 valves with integrated electronics.

An additional channel mode circuit allows for the considerable extension of the possible applications of the described card.

Features

– Suitable for controlling high-response valves with in stalled electronics

– Amplifier with additional electronics (daughter card)

– Analog amplifiers in Europe format for installation in 19″ racks

– Valve position control with PID behavior

– Outputs short-circuit-proof

– External shut-off for pressure controller

– Suitable for pressure sensors (1…6 V, 0…10 V, 4…20 mA)

– Supply for pressure sensors

– Cable break detection for pressure sensor

Block Diagram with Pin Assignments

The Indramat MKD071B-061-KG1-KN is a servo motor manufactured by Indramat, a major 20th century motion control system manufacturer.

We specialise in Indramat motion control. We have the largest inventory of emergency replacement components in the country. We offer 24-hour factory repair turnaround.

Learn about MKD071B-061-KG1-KN

Indramat’s MKD motors are a family of servo systems in a variety of sizes.

Frame sizes range from 025 to 112. A, B, C, and D frame lengths are available.

The MKD071B-061-KG1-KN has a frame size of 071 and a frame length of B. The MKD071B-061-KG1-KN has a frame length of B.

These servo motors are designed to provide cost-effective automation for www.abb-drive.com industries that require power and reliability.

Some of the advantages of the MKD series:

High Reliability

Maintenance free operation with brushless design and grease lubricated bearings

Suitable for harsh environments

Overload protection through thermal monitoring and winding cooling

Simple and flexible installation

High performance

These features make the MKD series motors ideal for food preparation and packaging, machine tools, automation and assembly, and printing and packaging applications.

MKD071B-061-KG1-KN has a junction box and a holding brake. Cables are sold separately.

Modular Design

Indramat components benefit from a modular design. As soon as a faulty component is found, it can be removed from the machine and replaced with a working component of the same type. With the correct parameters, the machine can be started again immediately, avoiding downtime.

Features

▶ Measuring pressures in hydraulic systems

▶ 8 measurement ranges up to 630 bar

▶ Sensor with thin film measuring cell

▶ Components that are in contact with the media are made of stainless steel

▶ Operational safety due to high bursting pressure,reversed polarity, overvoltage and short-circuit protection

▶ Characteristic curve deviation <0.5%

▶ Non-repeatability <±0.05%

▶ Ambient temperature range –40 … +85 °C

▶ Marine approval DNV for all variants with current output

​Weight

kg 0.06

Nominal temperature range

°C –25 … +80

Ambient temperature range

°C –40 … +85

Storage temperature range

°C –40 … +80

Medium temperature range

°C –40 … +90

Sine test according to DIN EN 60068-2-6

10 … 2000 Hz/maximum of 10 g/10 cycles/3 axes

Noise test according to DIN EN 60068-2-64

20 … 2000 Hz / 14 gRMS / 24 h / 3 axes

Transport shock according to DIN EN 60068-2-27

15 g / 11 ms / 3 axes

Pressure port 1)

G1/4 threaded port according to DIN 3852 form E

Housing materials

V4A (1.4404), PEI, HNBR

Material process interface with measuring cell

1.4542 (17-4 PH / 630); seal ring NBR

Throttle material

1.4305

Throttle element

In the pressure channel of the process interface. It corresponds

to a nozzle of 0.3 mm and reduces the risk of damage during

highly dynamic effects such as pressure peaks or cavitation.

Description

The Bosch Rexroth HM 20-2X/315-F-C13-05-N (R901342038) is a high-precision pressure

transducer designed for monitoring and controlling hydraulic pressures within a wide range of applications.

This sensor is capable of measuring pressures with ranges up to 600 bar,

making it suitable for various demanding environments where accurate pressure readings are critical.

The transducer features a thin film measuring cell and components that come into contact with

media are constructed from stainless steel, ensuring durability and compatibility with a variety of fluids.

With its excellent non-repeatability of less than 0.1% and an accuracy class of 0.5,

the HM 20-2X/315-F-C13-05-N provides reliable and precise measurements essential for maintaining system performance and safety.

The device also boasts operational safety features including high bursting pressure capacity,

reversed polarity protection, overvoltage protection, and short-circuit protection.

www.abb-drive.com This model operates within an extensive temperature range, ensuring consistent performance under varying environmental conditions.

Additionally, it has received marine approval DNVGL for all variants with current output,

which attests to its robustness and suitability for maritime applications.

The component series X to which this transducer belongs indicates

that it is part of a line designed to handle maximum operating pressures of up to 315 bar.

It offers pressure ratings at several intervals including 100, 160, 250, 315, 400, 600 bar etc.,

providing flexibility for integration into different hydraulic systems. Furthermore,

the HM 20-2X/315-F-C13-05-N is cULus-listed demonstrating compliance with

North American safety standards and regulations for industrial control equipment.

Features

Measuring pressures in hydraulic systems 8 measurement ranges up to 630 bar Sensor with

thin film measuring cell Components that are in contact with the media are made of stainless

steel Operational safety due to high bursting pressure, reversed polarity,

overvoltage and short-circuit protection Accuracy class 0.5 Excellent non-repeatability

< 0.05 % Wide operating temperature range –40 … +85 °C Marine approval DNV-GL for all variants with current output.