SMT-BD1/f (GB) Spindle motor indexing

This manual describes the option "f" of the SMT-BD1 amplifier: Spindle motor indexing. The general information about the digital amplifier commissioning are described in the standard SMT-BD1 manual. This manual may be used in conjunction with appropriate and referenced drawings pertaining to the various specific models. Maintenance procedures should be attempted only by highly skilled technicians (EN 60 204.1 standard) using proper test equipment. The conformity with the standards and the "CE" approval are only valid if the items are installed according to the recommendations of the racks and...

SPINDLE MOTOR INDEXING WITH THE SMT-BD1/f AMPLIFIER

CHAPTER 1 - GENERAL DESCRIPTION Applications with spindle motor indexing require the SMT-I2-BD1 daughter board on the SMT-BD1 amplifier and the firmware memory version X.XF. In this configuration, the SMT-BD1/f amplifier ensures the positioning of the spindle motor shaft during the tool exchange, according four programmable positions. The spindle motor must be equipped with a one pole pair resolver (speed 1) for the absolute definition of the four indexing positions on one shaft revolution. The logic inputs and outputs which are necessary for this kind of operation, are wired on the amplifier...

CHAPTER 2 - SPECIFICATIONS 1 - TECHNICAL DATAS Logic inputs IDX0 : Axis indexing selection among 4 IDX1 : Axis indexing selection among 4 STOP : Stop on selected indexing JOG+ : Indexing displacement in positive direction JOG- : Indexing displacement in negative direction Optocoupled inputs : from 5 V to 24 V Logic outputs VEL : Indication "speed input command is reached" POS : Indication "indexing position is reached" Optocoupled outputs Imax 5 mA Drive position repetability 1 motor shaft revolution/65536 (resolver speed 1) Drive position accuracy (*) 8 Arc mins as standard (2 arc mins optional)...

2 - AMPLIFIER BLOCK DIAGRAM Resolver MOTOR Resolver conversion Resolver oscillator Current monitor Indexing input Pref Vmes Position loop Vector control Speed loop Current loops Analog input Analog input EEPROM Power fault P err Vmes Vref IQ ID Imes Idc Serial interface Selectable outputs Logic supplies

Motor encoder output of the marker pulse Z/ (5 V max. current 20 mA) Motor encoder output of the marker pulse Motor encoder output channel A/ (5 V max. current 20 mA) Motor encoder output channel A Motor encoder output channel B/ (5 V max. current 20 mA) Motor encoder output channel B Logic input IDX0 : Indexing selection Logic input IDX1 : Indexing selection Logic input STOP : Stop on indexing Logic input JOG+: Indexing displacement pos. direction Logic input JOG- : Indexing displacement neg. direction O Logic output VEL : Speed input command is reached O Logic output POS : Indexing position...

The IDX0, IDX1, STOP, JOG+ and JOG- are optocoupled and operate in positive logic according to the diagram shown below. The input voltage corresponding to the level 1 is between 5 and 24 V. The VEL and POS outputs are "open collector" and "optocoupled" outputs. The transistor is inhibited as long as the output is not activated. The traditional application scheme is shown below. The maximum output current is 5 mA. * See manual "BPCW Options", part 2 "Digital oscilloscope". Linearity = 10 % on logic boards 01612A, 01612B and 01612C. SMT-BD1/f • Chapter 3: Inputs - Outputs

Spindle speed input command Default RESET For the analogue input command signal CV, use a shielded twisted pair cable with a 360° shield connection ensured by means of the metal plated connectors at both cable ends (see standard manual "SMT-BD1 digital drive, Chapter 8, part 6). The amplifier 0 Volt (X4, pin 15) MUST be connected to the NC (Gnd). The input command wiring (CV) must be made according to the polarities between both NC and amplifier (CV+ on "diff. high" of the NC).

The parameters concerning spindle drive applications with axis indexing are accessible via the submenus Spindle indexing and Indexing positions of the menu Advanced functions in the BPCW software version 2.0. and greater. Indexing motor shaft positions 1 - OPERATION MODE When the logic input STOP is not activated, the operation in speed mode with a PI or PI2 mode is the same as the one of the standard amplifier. The logic output VEL indicates that the motor speed has reached the value of its input command with the accuracy defined by the parameter Velocity accuracy. When the logic input STOP...

2 - APPLICATION PARAMETERS The following parameters are accessible via the submenu Spindle indexing in the menu Advanced functions from the BPCW software 2.0 on. The parameter Position error defines the tolerance on the position error for the activation of the POS output in the axis indexing mode. When the logic input STOP is activated and when the error between both motor and indexing position is below this value, the POS output is activated in order to indicate that the motor has reached the indexing position. This parameter is expressed in mechanical degrees on the motor shaft (with a one...

The parameter Proportional speed gain defines the proportional gain (KP2) of the regulator acting on the speed error. The adjustment range is between 0 and 4 095. The parameter Integral 1 speed gain defines the first integral gain (KI) of the regulator acting on the speed error. The adusjtment range is between 0 and 255. The parameter Proportional position gain defines the proportional gain acting on the position error (KP1). The adjustment range is between 0 and 1. The parameter Feedforward position gain defines the amplitude of the anticipating term (KF) corresponding to the speed input command...

CHAPTER 6 - COMMISSIONING 1 - CHECKING THE CONFIGURATION Check the amplifier standard configuration as described in Chapter 6 of the standard SMT-BD1 manual. Check for the presence of the SMT-I2-BD1 daughter board between both logic and power boards (see chapter 8 (Appendix): Location diagram of the hardware options). Check for the X.XF firmware memory version. Check that the jumpers E and S of the amplifier logic board are open (see chapter 8 (Appendix): Location diagram of the hardware options). 2 - POWERING Turn on the amplifier as described in Chapter 6 of the standard SMT-BD1 manual. 3 -...