4-Axis Position Control. INFO-4KPr. Position Control Ramp Profiles Trajectory Run. Technical Data

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1 Position Control Ramp Profiles Trajectory Run The is the field bus node for highprecision and very fast positioning and control tasks. Four complete and independent channels are incorporated on the board. The position board is a pure periphery board, i.e. the control algorithms requiring much computing power are performed by the firmware in the NF Master. The firmware also performs the conversion of increments into degrees, meters or mm as well as reference runs accurate to one increment. ne NFPPC Master with the PowerPC RSC CPU controls up to 64 axes beside performing the entire control of the machine. The board is suitable for controlling frequency converters or for registering the position of handwheels. n board is a DC/DC converter for the encoder and proximity switches. Technical Data Sampling rate Standard: 64 axes 4ms 32 axes 2ms 6 axes ms 8 axes 0.5ms SCurve 4 incremental inputs RS422, TTL or max. 2.5MHz counting frequency 4 zero point inputs RS422, TTL or Reference run accurate to one increment 4 DAC outputs for analog controller activation ±0 with 0.3m resolution 8 outputs 4 controller enables 4 control outputs 24/0.3A individually isolated 8 inputs Status inputs 24 potentialfree, bipolar 5 power supply for encoder 4 x 00mA max. 5 power supply for 4 proximity switches 4 x 20mA max. rder No A

2 Software The position control software of the NFPower PC Master simultaneously controls up to 64 axes on its own. The activation of this software is possible in any programming language. The axis parameters (control weights, standard factors, preselection values, etc.) are written via the NCDLL to the field bus master. The preselection values are specified in the userspecific units such as degrees, meters or mm. The NFPPC Master controls and monitors the entire ramp and constant run, brakes to the accuracy of an increment at the desired point, and maintains this point until the next run command. n addition, the resolution of the encoders is extended by a software function on the basis of the 4quadrant method to 32 bit. Each axis is sampled every 500µs, the control intervals last 4, 2, or 0.5ms, depending on the number of axes. Speed changes during runs, multiaxis trajectory runs (Pull Mode) are just as possible as premature termination or EMERGEN CY FF. f course, the current position can also be read at all times. ther modes: Startup mode (without fault detection) Control and simulation mode (without feedback, without closedloop control) Automatic norming (always between degrees) Automatic zeroing after each run Endless rotation DAC / increment mode (pure DAC output ±0) and 2bit encoder path registration DAC / path mode (pure DAC output ±0) and path registration with conversion to meters, mm or degrees Connector Allocations d b z N 0 N A 0 A B 0 B 0 Shield N 24 N A B A B Shield Shield N 2 N A 2 A 2 Shield 24 B 2 B 2 Shield N 3 N A 3 A 3 Shield Connector 32 B 3 B 3 Shield 90 angled DN 462, Type F48 2.8mm pins d b z 2 UT 0 UT EN 0 EN N 0 N0 0 C N 0 8 out 0 out 0 Shield 0 UT UT 24 2 EN EN 0 4 N N0 C N 6 out out Shield 8 UT 2 UT EN 2 EN N 2 N0 2 C N 2 24 out 2 out 2 Shield 26 UT 3 UT EN 3 EN 3 0 Connector 2 30 N 3 N0 3 C N 3 32 out 3 out 3 Shield 90 angled DN 462, Type F48 2.8mm pins 2

3 Assembly diagram 0Y Addressing (blue) S (0Y) axis 0 0 to 3... F 60 to 63 Assembly LEDs on the front panel Per channel, 6 LEDs are included, which signal the following functions: yellow = Motor turns forward green = Sync pulse input red = Motor enable red = utput yellow = nput 0 yellow = nput LEDs on the receiver module LEDred = 5 power supply LEDyellow = NFLink receiver signal K Jumpers (green) The jumpers influence the illumination intensity of the emitting LED and thereby the segment length of the fiber cable to the next board. Segment length Jumper position m no jumper m > m >30 Resistor array (light green) The resistor arrays are used for configuring the input voltage of the encoders. (See page 5) Customized modifications are available as needed. Specifications Power supply , 24 electrically isolated Climatic conditions Ambient temperature: Storage: C peration: C Board temperature: peration: C Relative air humidity no condensation: 95% Encoder and zero pulse inputs Required A,B tracks 4fold resolution nput frequency max. 2.5MHz 4bit counter Softwarebased expansion to 64bit floating point path registration Zero pulse input positive active, min. 400µs RS422 with 330Ω termination 5 with 2.5 switching point 5 with 5 switching point DAC outputs ±0 / 6bit Resolution 300µ/bit Precision better than 0m ffset and gain correction in EEPRM (no potentiometers) ffset drift max..8m/degree Gain drift max. ±0.5%/degree nternal gain, offset drift and error of the final motor stage are automatically balanced by a software function in position control. nputs: with 5 switching point, potentialfree, bipolar, 24, 2mA utput: (FET) off =48, on =300mA, R on =0.35Ω 5/5 power supply, onboard 5 0%,5%, 400mA max. 5 ±0%, 00mA max. Mounting Connector DN 462, Type F48 Mounting in 9'' chassis Dimensions: 00 x 234 x 20mm (LxHxW) 6U x 4SU Tel. 4 44/

4 Connections Connection Example Board power supply For the board power supply, a 3phase rectifier without electrolytic capacitor will suffice. But in order to prevent interference, we recommend an electrolytic capacitor of 4, ,000µF. The 24 power supply must pass through a line filter. Shielded leads The encoders must always be connected through shielded leads and wherever possible with differential signals (RS422). The DAC output must also be connected through shielded leads to the motor power section. The shields to the motor controller and to the encoder must always be connected at both ends. n order to prevent undesired leakage currents through the shielding, it may be necessary to provide a bonding conductor, especially over long distances or with different power supplies. f frequency converters are applied, their motor leads should if possible be installed so as to be shielded. Encoder power supply The DC/DC converter on the board also provides the 5 power supply to the encoders. A special power supply for these encoders is therefore not required. As a zero pulse generator, it is possible to use proximity switches, which are also provided with a 5 power supply through the board. Grounding The board is grounded on the front panel. Care must be taken to ensure that the connection between the rack housing and the control cabinet is conductive. This is best achieved using chromatized mounting bars. The motor controller should be separately grounded. the encoders are frequently mounted directly on the motor. This motorencoder combination must always also be grounded, as otherwise the encoder electronics will be exposed to interference by the motor current. Additional inputs and outputs The additional inputs and outputs must always be wired inside the control cabinet (max. length m). therwise they must be installed with shielded leads. See also the NDEL Wiring Guidelines and NDEL Design Guidelines. 4

5 nterfaces Wiring RS422 inputs TTL inputs RS422 Encoders The inputs of the encoders and zero pulses can be wired for RS422, TTL, 5 or 24 inputs. The board has three assembly fields for this purpose, into which the resistor arrays can be plugged. Two encoders each and all zero pulses must have the same input wiring. J encoder channels 0 and J2 encoder channels 2 and 3 J3 zero pulse channels inputs TTLnp The additional inputs can be operated with The inputs are potentialfree. They can be wired in any desired polarity (bipolar). The common pin of two inputs can be wired as needed to or. The outputs are also potentialfree. The typical current loading is 300mA, the noload voltage inputs 5np 24np Tel. 4 44/