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2

Specifications

2.1

Electrical Specifications

All specifications assume a 1 kHz pulse rate, 12 V power input, 25° C still-air
ambient, and TTL step/direction input, unless otherwise indicated.

PARAMETER

MINMUM

TYPICAL

MAXIMUM

Power Supply Voltage

10 V

16 V

Inrush Current at Power On

600 mA

Idle Current Draw

75 mA

Pulse Rates

Step/Direction Mode

Quadrature Mode

Linear Voltage Mode

Bang-Bang Voltage Mode

0

0

0

0

2 kHz

2 kHz

2 kHz

2 kHz

Minimum Non-Zero Pulse Rate in
Linear Voltage Mode

9.5 Hz

Linear Voltage Mode Step Size

refer to Figure 11 and Figure 12

Analog Threshold

±1 V

ANALOG IN

Input Impedance

14.1 k

Ω

Optically Coupled Input Series
Resistance

470

Ω

/0.06W

Package Thermal Time Constant

7 minutes

Over-temperature LFAULT Trip Point at

Temperature Monitor Output

4.00 V

Over-temperature Shut-Down Trip at

Temperature Monitor Output Point

4.12 V

Weight

5.76 oz (163 g)

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Содержание New Focus 8703

Страница 1: ...Model 8712 Picomotor Driver Model 8703 System Driver User s Manual Single Axis Picomotor Driver ...

Страница 2: ...ces induced by Radio Frequency Fields Immunity Test IEC 61000 4 8 2009 EMC Power Frequency Magnetic Field Immunity Test IEC 61000 4 11 2004 AMD 1 2017 EMC Voltage Dips Short Interruptions and Variations Immunity Test 1 Manufacturer s Name MKS Instruments Inc 2 Tech Drive Andover MA 01810 USA Authorized Representative s Name Location MICRO CONTROLE Spectra Physics S A S Zone Industrielle 45340 Beau...

Страница 3: ...rbances induced by Radio Frequency Fields Immunity Test IEC 61000 4 8 2009 EMC Power Frequency Magnetic Field Immunity Test IEC 61000 4 11 2004 AMD 1 2017 EMC Voltage Dips Short Interruptions and Variations Immunity Test 1 Manufacturer s Name MKS Instruments Inc 2 Tech Drive Andover MA 01810 USA Authorized Representative s Name Location MICRO CONTROLE Spectra Physics S A S Zone Industrielle 45340 ...

Страница 4: ...o not apply to products which have been repaired or modified without Newport s written approval or products subjected to unusual physical thermal or electrical stress improper installation misuse abuse accident or negligence in use storage transportation or handling This warranty also does not apply to fuses batteries or damage from battery leakage THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES ...

Страница 5: ...New Focus Customer shall not at any time disclose New Focus s trade secrets to any other person firm organization or employee that does not need consistent with Customer s right of use hereunder to obtain access to the New Focus Programs and Related Materials These restrictions shall not apply to information 1 generally known to the public or obtainable from public sources 2 readily apparent from ...

Страница 6: ...r RMA Return the product to Newport Corporation freight prepaid clearly marked with the RMA and we will either repair or replace it at our discretion Newport is not responsible for damage occurring in transit and is not obligated to accept products returned without an RMA E mail rma service newport com When calling Newport Corporation please provide the customer care representative with the follow...

Страница 7: ...l Specifications 3 2 2 Model 8712 pin Descriptions 4 2 3 Typical Characteristics 7 2 4 MODEL 8712 DRAWINGS 8 3 Theory of Operation 9 3 1 Block Diagram 9 3 2 Input Mode Control Bits 10 3 2 1 Step Direction Mode 10 3 2 2 Quadrature Mode 10 3 2 3 Linear Voltage Input 11 3 2 4 Bang Bang Voltage Input 12 3 3 Status Indicators 12 3 4 Power Supply 13 3 4 1 Fault Protection 13 3 4 2 Power Connections 14 3...

Страница 8: ...21 4 1 9 Temperature Sensor 22 4 2 Picomotor Connections 22 4 2 1 Isolation 23 4 3 Model 8703 System Board Layout 24 5 Safety Precautions 26 5 1 Definitions and Symbols 26 5 1 1 General Warning or Caution 26 5 1 2 Electric Shock 26 5 1 3 European Union CE Mark 26 5 1 4 UKCA Mark 27 5 1 5 Waste Electrical and Electronic Equipment WEEE 27 5 1 6 Control of Hazardous Substances 27 5 2 Warnings and Cau...

Страница 9: ...ailed View of Pulse Rate vs Input Voltage around the dead band for Linear Voltage Input Mode 12 Status Indicators position 13 Heatsink mounting holes 14 Schematic of Model 8703 System Board 21 System Board Upper Layer Top View 24 System Board Bottom Layer Top View 25 Dimensions of Model 8703 25 General Warning or Caution Symbol 26 Electrical Shock Symbol 26 CE Mark 26 UKCA Mark 27 WEEE Directive S...

Страница 10: ......

Страница 11: ...temperatures Over temperature auto protection Threaded holes on top and lateral sides for easy mounting Step direction quadrature and 10V linear or bang bang voltage control interfaces set the velocity and direction of a Picomotor connected to the drive module Two mode inputs are used to select one of the four control interfaces when power is applied to the module An optically isolated LIDLE input...

Страница 12: ...ir operating temperature 0 C 65 C Storage temperature non operating 40 C 95 C Voltage on optically coupled output 0 V 5 V Input voltage on optically isolated inputs 0 V 6 0V Analog input voltage ANALOG IN ANALOG IN 10 V 10 V Current into optically coupled input 10 mA Operating outside the operating limits may damage the unit The magnitude of the analog input voltage must be less than the power sup...

Страница 13: ...on Mode Quadrature Mode Linear Voltage Mode Bang Bang Voltage Mode 0 0 0 0 2 kHz 2 kHz 2 kHz 2 kHz Minimum Non Zero Pulse Rate in Linear Voltage Mode 9 5 Hz Linear Voltage Mode Step Size refer to Figure 11 and Figure 12 Analog Threshold 1 V ANALOG IN Input Impedance 14 1 kΩ Optically Coupled Input Series Resistance 470Ω 0 06W Package Thermal Time Constant 7 minutes Over temperature LFAULT Trip Poi...

Страница 14: ... is 4 8 to 5 2Volts DC no load 8 ANALOG IN Voltage controlled rate input Connect to analog common 9 ANALOG IN Voltage controlled rate input Connecting to analog voltage 10 V gives full scale rate of 2 kHz The input impedance is 14 1 kΩ to ground Enabled by MODE 0 1 or 1 1 inputs 10 DGROUND Opto coupler return Connect to digital ground close to control logic 11 DIR A Opto coupled TTL control input ...

Страница 15: ...ode where voltage on ANALOG IN above the threshold results in maximum analog pulse rate Polarity controls direction Mode bits are only read when power is turned on They are not optically isolated Tie them to 5V OUT or SYS GROUND 15 LIDLE Opto coupled TTL input Low input disables pulse generation and reduces power consumption Can also be used as system interlock 16 LFAULT Open collector opto couple...

Страница 16: ...y Other signal traces should be kept away from PULSE RETURN and PULSE OUTPUT 25 PULSE OUTPUT Drive pulse Note PULSE RETURN and PULSE OUTPUT should be routed in close proximity Other signal traces should be kept away from PULSE RETURN and PULSE OUTPUT 26 PULSE RETURN Drive pulse return same as pins 24 27 FRAME GROUND Return for EMI T filter on PULSE RETURN and PULSE OUTPUT 28 FRAME GROUND Return fo...

Страница 17: ...teristics Operating Current vs Pulse Rate Idle Current as a Function of Input Voltage Temperature Rise vs Pulse Rate Temperature Sensor Output vs Case Temperature Quadrature Mode Counter Clockwise Motion Quadrature Mode Clockwise Motion ...

Страница 18: ...8 Specifications 2 4 MODEL 8712 DRAWINGS Printed Circuit Board Mounting Pattern Top View Dimensions of the 8712 Module mm inches ...

Страница 19: ... a longer pause between the significant number and the decimal number For example version 1 5 will flash the LED once followed by a pause then will flash the LED five times Pulse and direction inputs voltage or logic edge from the selected interface cause the microprocessor to generate low voltage Picomotor drive waveforms The output amplifier increases the amplitude of the drive waveform sufficie...

Страница 20: ... can be left in either a high or low state because it is edge sensitive The low state is preferred because the opto coupler input diode will be off DIR A causes clockwise motion when high and counter clockwise motion when low It is checked before each pulse is made to allow instantaneous direction reversal DIR A is level sensitive so it must be in the desired state when PULSE B goes low and remain...

Страница 21: ...se inputs After the 8712 detects an edge transition on A or B phase subsequent edges are ignored until an edge transition is detected on the other phase 3 2 3 Linear Voltage Input The 8712 generates a pulse rate proportional to the input voltage on the ANALOG IN pins in this mode An input voltage from 10 V to 10 V gives a pulse rate ranging from 0 to 2 kHz Positive input voltages give clockwise mo...

Страница 22: ...ang Bang Voltage Input In this analog input mode a voltage exceeding the deadband threshold gives the maximum 2 kHz pulse rate Positive input voltages give clockwise motion Negative input voltages give counterclockwise motion This mode should not be used continuously without forced air cooling of the 8712 at ambient temperatures higher than 25 C The unit has a temperature time constant of 6 minute...

Страница 23: ...he stress has two components Inrush current The inrush current on power up charges the internal filter capacitor While the energy magnitude of the inrush current is limited it can still cause problems with power supplies not designed to handle it Dynamic load Dynamic current is supplied to the 8712 internal power supply for each Picomotor drive pulse The input filter capacitor will supply more dyn...

Страница 24: ...g the pulse rate air force cool the 8712 case or use a heatsink If the case temperature continues to rise at 85 C 4 12 V at temperature monitor the output will be turned off The output will remain off until the case temperature will decrease to 75 C 3 86 V at temperature monitor when the output will be turned on automatically If left unattended the unit will protect itself cycling between 85 C and...

Страница 25: ...be optically isolated if you want to control these inputs from the host computer Include the 1 kΩ resistor connected in series to the 5V OUT pin in any opto coupler design calculations LIDLE PULSE B DIR A These inputs are optically coupled They can be directly driven by an HC TTL buffer like the 74HC244 A 0 06 W 470 Ω resistor is connected in series with the opto coupler input diode to limit curre...

Страница 26: ...shorted the resistors will over heat and open CAUTION The 8712 is designed to drive a single Picomotor at a time The 8712 can be used to control multiple Picomotors using external relays or switches but only one Picomotor at a time If this is done DO NOT SWITCH CONNECTIONS WHILE THE 8712 IS ENABLED Electrically Picomotors behave like capacitors with a very low leakage resistance Thus they can reta...

Страница 27: ... shunted to frame ground when the FRAME GROUND pins are connected to the customers frame ground This connection must be low inductance i e short and wide Optically coupled control interface As mentioned above optical coupling is used to break the low frequency ground loop inherent in locating the 8712 close to its power source Further benefits in the EMC aspect of system design are the reduction i...

Страница 28: ...d J100 J101 J102 and J103 J100 is for the power supply and J101 is for controlling and monitoring the Model 8703 J102 and J103 are for pulse output to drive the Picomotor The terminal functions for J100 and J101 are described below 4 1 1 I O Connector Descriptions Name J100 J101 J102 J103 Description 2 Pin Header 9 Pin Header 4 Pin receptacle 3 Position terminal Make Phoenix Contact Phoenix Contac...

Страница 29: ... PULSE B Opto coupled TTL control input defined by MODE0 1 inputs In Step Direction mode each falling edge initiates a step In Quadrature mode acts as quadrature B 6 LIDLE Opto coupled TTL input Low input disables pulse generation and reduces power consumption Can also be used as system interlock 7 LFAULT Open collector opto coupler output pulled low when output amplifier temperature limit is exce...

Страница 30: ...and LFAULT opto isolators Connect it to the logic ground for the source of these signals destination for LFAULT Pin 3 can be connected to terminal 1 GROUND if a simple set up is needed DIR A PULSE B LIDLE and LFAULT will function only if terminal 6 is connected to the proper ground Pins 4 and 5 are used for step and direction input when the DIP switches are set for DIR PULSE on on or QUAD on off S...

Страница 31: ...You can just connect an 820Ω resistor between the 12V supply and Pin 6 to disable LIDLE 4 1 8 LFAULT Pin 7 is the open collector opto isolated LFAULT output It goes low when the case temperature limit is exceeded LFAULT pulses when power is first applied to indicate the firmware revision number The data sheet gives an example of the pulsed startup waveform The customer must provide a pull up resis...

Страница 32: ...emperature sensing circuit has a 10 tolerance C100 is connected across Pins 8 and 9 to improve noise filtering TVS diode D106 is connected across Pins 8 and 9 to attenuate voltage spikes D106 is not needed if short wires are used to connect Pins 8 and 9 to the input of the voltage measuring circuit Pin 9 is the ground reference for the temperature sensor 4 2 Picomotor Connections For the convenien...

Страница 33: ...2 from the Picomotor cabling L102 and L101 ferrite beads increase the impedance to a few hundred Ohms at high frequencies D111 and D110 TVS diodes shunt high voltage pulses to the frame ground terminal PX600 The frame ground is also connected to the 8712 to ground the internal filter T networks The pulse output pulse return and frame traces are low inductance Pulse output and return carry 2 A tran...

Страница 34: ...24 Model 8703 System 4 3 Model 8703 System Board Layout System Board Upper Layer Top View ...

Страница 35: ...Model 8703 System 25 System Board Bottom Layer Top View Dimensions of Model 8703 ...

Страница 36: ...eds to be consulted to determine the nature of a potential hazard and any actions that have to be taken 5 1 2 Electric Shock Electrical Shock Symbol The Electrical Shock Symbol in the figure above appears throughout this manual This symbol indicates a hazard arising from dangerous voltage Any mishandling could result in irreparable damage to the equipment and personal injury or death 5 1 3 Europea...

Страница 37: ...lar waste Instead it is the user responsibility to dispose of waste equipment according to the local laws The separate collection and recycling of the waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment For information about where the user can drop off the waste equipment for recyc...

Страница 38: ...0 VDC this equipment internally generates much higher voltages that are present on the Model 8712 connector pins AND various components and connectors on the Model 8703 System Board Only properly trained personnel should touch either of these items The Model 8712 is intended to be used as a component in a larger system When this product is included as part of a larger assembly the user MUST ensure...

Страница 39: ...recautions for static sensitive devices when handling this equipment This product should only be powered as described in the manual There are no user serviceable parts inside the Model 8712 Picomotor Drive Module 5 2 3 Summary of Warnings and Cautions The following general warning and cautions are applicable to this instrument WARNING The Picomotor Driver is incomplete in constructional features a...

Страница 40: ... operating the Model 8712 Picomotor Driver please read and understand all of Section 5 WARNING Do not attempt to operate this equipment if there is evidence of shipping damage or you suspect the unit is damaged Damaged equipment may present additional hazards to you Contact Newport technical support for advice before attempting to plug in and operate damaged equipment WARNING Do not apply external...

Страница 41: ...g the pulse frequency or other appropriate mitigations Failure to take appropriate action when operating the Model 8712 under these conditions can result in severe injury The Models 8712 and 8703 Picomotor Drivers are intended for use in an industrial laboratory environment Use of this product in other environments such as residential may result in electromagnetic compatibility difficulties due to...

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