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The precontrol calculates the firing angle depending on the current setpoint and the EMF of the motor, uses it to compensate the above non-linearities and sets the required firing angle without delay for the following gating unit.

Operating mode for the field Note: A temperature sensor is required for that. The electronics supply can therefore be provided by a UPS without reservation. If controlling is only required via bus, terminals 37 and 38 must be securely clamped to the High potential e.

Delay angle limits Sheet G Fault message during the optimization run, see fault value in the fault description. This must be configured for the given current and induction of the load. Devices with a rated current greater than A, have installed branch fuses which replace both the line fuses as well as the fuse in the DC circuit for semi-conductor protection.

This allows efficient setting of P24 24 V, e. The thyristor will only remain conductive when the holding current is reached.

Without a compensation winding the following formulas can only be approximations. However, field reversal can be used to permit braking of large masses in one direction of rotation or if operation in the opposite direction of rotation is required.


Use of a band filter makes it possible manhal set a larger Kp for the speed controller without vibration occurring.

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Simodrive 6ra27 manual List of ebooks and manuels about Simodrive 6ra27 manual. Check control of main contactor. The current to the rotating motor armature with its armature winding is led to a commutator 6rra27 carbon brushes. For this, the number of the double word connector is entered at two consecutive positions in parameterization of amnual transmission data.

Sheet G top left, normalization P When retrofitting the old converter with 6RA70, check the design of these reactors; Siemens advisory services will help you with this.

Rated DC device current for the field acc. An overvoltage protection must be always configured at the direct voltage output of the 6RA70 to protect the thyristors in the 6RA Field manuxl setpoint limitation After the output of the EMF control loop, a field current setpoint limitation takes effect. Once you have replaced the other modules, not more settings or adjustments are needed. The gearing Gears are used to adapt the speed of the motor to a particular system speed.


The 6RA70 can evaluate the manuall temperature sensors: P setting too low. Any existing smoothing reactor in the direct current circuit should also be kept. Inverted fault can be used for output to a binary output. The controllers can be adapted manually by suitably setting the controller variables, the gain Kp and the reset time Tn, and analysis of the step response.


For an article on this physical effect conduction-throughsee: Ideal direct voltage Udi: The ramp-function generator changes speed setpoint that suddenly changes by means of an ascending ramp ramp-up time P and a descending ramp ramp-down time P In addition, a lower manuak rounding P at the beginning and an upper transition rounding P at the end of the ramp-up function can be set. Compensation of the moment of inertia: Only qualified personnel who are familiar with all the safety information contained in manuaal Operating Instructions, as well as the assembly, operating and maintenance instructions, should carry out work on these units.

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Measurement of electrical variables Electrical variables that can be measured with a multimeter: This winding is a stabilizing series winding and strengthens the motor flux proportionally with the armature current.

The cause of a fault can be mabual from the Trace evaluation. Line voltage for possible armature voltage is too low, motor voltage too high, drive dragged along, motor field too high, armature circuit fuse faulty. The aim is therefore to compensate for this response with a suitable controller.

Fully controlled three-phase manusl connection, 1Q device acc. If the device then starts operation without a fault, the thyristors are OK. If field current OK and field voltage not OK, an interturn fault in the field winding, which means that the motor flow is manal small could be the cause.