ABB ASTAT A4 EN Manual Crane motion controller.

ABB ASTAT A4 EN  Manual Crane motion controller.

ASTAT ® for industry!

ASTAT, with slip-ring motors, has become the leading technology for new heavy industrial cranes in the growth regions of the world.

In Europe, ASTAT is mostly used for retrofit installations or when normal industrial drives are unable to fulfil the requirements.

We supply ASTAT solutions for applications upto 4000 A or 4700 kVA.

The ASTAT Digital Crane Motion Controller has better control and information properties compared to earlier controllers. Equally important is the focus on quality of hardware components. 

The digital controller can be mounted on a steel plant crane in hot countries such as India without extra cooling or air conditioning. 

This capability provides additional benefits to worldwide industrial crane users.

The crane control system must withstand dirty, hot and cold environments in addition to difficult power supply systems. 

This has forced us to integrate functions like brake control, time relays, logic control and thermistor relays into the ASTAT controller. 

Generic products with the same robustness as the ASTAT controller are difficult to find. With this level of integration we offer a complete, fully tested motion control system.

Slip-ring motors may be produced with small internal rotor losses. This is important in crane applications with multiple motors and a high demand for good motion control. As well as being ideal for crane applications, slip-ring motors are low on maintenance with brushes being exchanged only every 5 to 10 years.

ASTAT uses the slip-rings for measurement of the rotor frequency and from this calculates the speed. In most cases no tachometer or pulse encoder is necessary.

The operator controls the crane motion, while all rotor contactors are optimized by ASTAT, as an integrated part of the current control. This results in dramatically reduced wear of contactors and crane mechanical parts. Crane maintenance costs will therefore be reduced.

Advantages with ASTAT ® :

• Fewer and better components result in more up-time.

• Operational diagnostics will speed-up fault tracing.

• Multipurpose spares will reduce parts in stock.

• The PC-program for maintenance can be installed in a ground level computer. Nobody has to visit the crane first to find the problem.

Digital ASTAT motion control is superior to other techniques and it increases the operational results to thElimits of the crane itself. 

For you as a user it will create:

• Increased productivity. 

The operator moves the crane without jogging, i.e. with one single movement.

• Prolonged lifetime. Smooth acceleration and retardation decreases torque peaks.

• Special functions reduce rope and brake wear.

• Satisfied operators. Motion control is possible down

to increments of only one cm. Try to do such a small step

without the ASTAT system!

• Excellent control features permit higher speed

during automatic control.

When to select ASTAT® ?

ASTAT is suitable for crane control in demanding

environments, when larger motor powers must be

handled, for retrofits or when automating one or more

cranes.

Applicable scenarios: suitable for demanding environments, occasions that need to handle larger motor power, crane renovation projects and scenarios that automate one or more cranes.

Technical specifications and features

Operating Limits: Voltage is allowed to fluctuate from -30% to +10% of the rated value, supports frequencies of 50Hz±10Hz, 60Hz±10Hz, operating temperature range of -25 (-40)ºC (unheated) to +70 (+85)ºC (un-cooled, for short periods of time), isolation in accordance with the EN60664 standard, pollution class 4.

Loads and Voltages: Supports a wide range of voltages such as 380 - 400V AC, 415V, 440 - 480V, 500 - 575V, 690V, etc.; Thyristor modules up to 690V (50/60Hz), currents ranging from 25A - 1000A (crane motor rated currents), continuous currents (AC - 1) higher than the rated currents.

Control system module: The control system module DARA 1001 supports 115/230V 50/60Hz single-phase voltage and is equipped with various interfaces, such as RS 232 interface for programming/monitoring, opto-coupler interface for master-slave control, digital input/output interfaces, motor PTC input interfaces, analogue input/output interfaces and so on.

Feedback module: The feedback module DADT1 is suitable for rotors with a rated rotor voltage of up to 600V.

Functions: Various functions including I/O unit and factory test, optional digital outputs, power supply information, motor information, limit switch functions, ASTAT configuration, rotor system, braking information, speed feedback, speed reference, speed regulation, speed monitoring, current/torque regulation, rotor resistance, etc. The setup is done from a PC, with Windows and COM1/USB port, with a two-digit display (00 - 99) for temperatures of -40 ... + 85ºC.

Control modes and feedback: Reversible stator voltage control, with 0 - 3 rotor contactors, supporting two modes: scalar speed control or vector-based torque control. There are three options for speed feedback: rotor frequency, tachometer and pulse encoder.

Optional controls: Swing control system, positioning system for TCP/IP commands, four-rope grab crane control, and other optional features are available.