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National Instruments Corporation

MID-7604/7602 Power Drive User Guide

Stepper Amplifiers

Type ....................................................... IM481H modular hybrid,

bipolar chopper

Chopping frequency ............................... 20 kHz

DC-bus motor......................................... 24 VDC nominal

Current per phase ................................... 0.20 to 1.4 A peak

(0.14 to 1 A RMS)
(factory setting is 0.50 A peak)

Microstepping selections

........................ ×

2, 4, 8, 16, 32, 64, 128, 256

5, 10, 25, 50, 125, 250

(factory default is

microsteps/step)

Continuous power output rating
(all axes combined) ................................ 80 W continuous

Motion I/O

Encoder inputs........................................ Quadrature, incremental

Voltage range .................................. 0 to 5 VDC

Differential input threshold............. ± 0.3 V (typical)

Single ended input threshold........... TTL/CMOS

Noise filter (RC time constant) ....... 100 ns

Maximum quadrature frequency..... 1 MHz

Limit and home switch inputs

Compatibility .................................. Signal pass-through

Inhibit inputs

Voltage range .................................. 0 to 12 VDC

Inhibit low voltage................... 0.8 V

Inhibit high voltage.................. 2 V

Inhibit output

Voltage range .................................. 0 to 5 VDC

Output low voltage .................. 0.5 V at 64 mA

Output high voltage ................. 2.4 V at 32 mA

Содержание NI MID-7604

Страница 1: ...erutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In st...

Страница 2: ...s Interlock Circuit 10 Front Panel LEDs 10 Driver Fault Output LEDs 11 Driver Inhibit LEDs 11 Limit Status LEDs 11 Front Panel DIP Switch Settings 12 Microstepping Selection 12 Output Current Settings...

Страница 3: ...ectrically shocked When symbol is marked on a product it denotes a warning advising you to take precautions to avoid electrical shock When symbol is marked on a product it denotes a component that may...

Страница 4: ...ctor blocks for each axis The terminal blocks do not require special wiring tools for installation The MID 7604 7602 connects to National Instruments motion controllers using a 68 pin high density int...

Страница 5: ...he Department of Communications DOC of Industry Canada regulates wireless interference in much the same way Digital electronics emit weak signals during normal operation that can affect radio televisi...

Страница 6: ...igital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brou...

Страница 7: ...rating the device Do not operate the device in an explosive atmosphere or where flammable gases or fumes may be present Operate the device only at or below the pollution degree stated in the specifica...

Страница 8: ...tion system This category refers to local level electrical distribution such as that provided by a standard wall outlet for example 115 V for U S or 230 V for Europe Examples of Installation Category...

Страница 9: ...wed by an asterisk are available on the MID 7604 only The two rocker switches on the MID 7604 7602 front panel are the AC POWER and ENABLE Figure 1 shows the location of these switches The AC POWER sw...

Страница 10: ...ID 7604 7602 Back Panel Connectors Note Items followed by an asterisk are available on the MID 7604 only Caution Be sure to turn off the ENABLE switch and the main AC power to your MID 7604 7602 and h...

Страница 11: ...falls out of tolerance This circuit shuts down the stepper drives for all axes by activating the inhibit when the host computer is disconnected from the MID 7604 7602 or inadvertently shut down Activa...

Страница 12: ...ed An axis is inhibited and the LED illuminates yellow in the following instances if the host bus interlock circuitry is activated if the ENABLE switch on the front panel is in the inhibit off positio...

Страница 13: ...ty of the inhibit input and the polarity of the limit status LED respectively Figure 3 shows the DIP switch bank layout Figure 3 DIP Switch Bank Layout Microstepping Selection The MID 7604 7602 uses b...

Страница 14: ...tings Table 2 Microstep Rate DIP Switch Setting Binary Selections Decimal Selections Switch Microsteps Step Switch Microsteps Step 2 half step 5 4 10 factory default 8 25 16 50 32 125 64 250 128 Do no...

Страница 15: ...is value is less than or equal to 80 W continuous you will not exceed the capabilities of the MID 7604 7602 If the value is greater than 80 W continuous you may still be within the operating capabilit...

Страница 16: ...ntrols this setting Refer to Figures 1 and 3 for the location of this switch The factory default setting of DIP switch 10 is active low If the inhibit input is active the axis is inhibited and the yel...

Страница 17: ...rity for the LEDs and not the actual limit to the motion controller Table 6 shows the DIP switch setting for the Limit Status LED polarity selection Back Panel Connector Wiring Motor Power Terminal Bl...

Страница 18: ...s You must wire the stepper motors in a 4 wire configuration as shown in Figure 4 You must isolate unused lead wires and leave them disconnected Refer to the Stepper Motor Configurations section of th...

Страница 19: ...oder terminal block The MID 7604 7602 supports differential inputs for Phase A Phase B and Index signals You can easily accommodate encoders with various phase relationships by swapping the signals an...

Страница 20: ...nter Clockwise Motor Rotation When connecting the encoder wiring to your MID 7604 7602 use shielded wire of at least 24 AWG Analog noise filters filter the encoder inputs in the MID 7604 7602 You must...

Страница 21: ...nhibit is deasserted Therefore you can lose steps if you attempt to issue a start motion command within 500 ms from the deassertion of the stepper drive inhibit A Kill command asserts the inhibit sign...

Страница 22: ...The analog input terminal block provides access to four analog to digital converter channels an analog reference voltage from the converter circuit and an analog input ground signal The analog output...

Страница 23: ...D 7604 7602 The arms of the strain relief bar attach to the sides of the MID 7604 7602 with the thumb nuts facing upward as shown in Figure 15 Using the provided screws attach the strain relief bar to...

Страница 24: ...bar and panel mount kit cannot be installed at the same time Amplifier Driver Command Signals For stepper drivers the two industry standards for command signals are as follows Step and Direction sign...

Страница 25: ...re variations Figure 17 shows a 6 wire and an 8 wire stepper motor A 4 wire motor is the same as a 6 wire motor except that the center taps CT are not brought out Figure 17 6 Wire and 8 Wire Stepper M...

Страница 26: ...cteristics While a parallel configuration is not possible with a 6 wire motor you can usually obtain high speed performance with the half coil connection shown in Figure 20 This configuration sacrific...

Страница 27: ...cifications Some signals have compatibility defined as signal pass through which means the MID 7604 7602 may have passive filtering on these signals but will not affect the voltage range or current ha...

Страница 28: ...osteps step Continuous power output rating all axes combined 80 W continuous Motion I O Encoder inputs Quadrature incremental Voltage range 0 to 5 VDC Differential input threshold 0 3 V typical Single...

Страница 29: ...l pass through 5 V output 1 A Included Connectors Encoders 8 position mini combicon 3 81 mm plug 1 per axis Limits 6 position mini combicon 3 81 mm plug 1 per axis Motors 5 position combicon 5 08 mm p...

Страница 30: ...H L 25 4 cm 4 3 cm 30 7 cm 10 in 1 7 in 12 1 in Weight 4 5 kg 10 lb Environment The MID 7604 7602 is intended for indoor use only Operating temperature 0 C to 40 C Storage temperature 20 C to 70 C Rel...

Страница 31: ...r this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com certification search by model number or product line and click the appropriate link...

Страница 32: ...lso has offices located around the world to help address your support needs For telephone support in the United States create your service request at ni com support and follow the calling instructions...

Страница 33: ...l Instruments trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the ap...

Страница 34: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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