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Summary of Contents for National Instruments MID-7654
- Page 1 National Instruments MID-7654 Manual Get Pricing & Availability at ApexWaves.com Call Today: 1-800-915-6216 Email: sales@apexwaves.com https://www.apexwaves.com/modular-systems/national-instruments/motor-drives/MID-7654...
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Page 2: Table Of Contents
SER GUIDE MID-7654/7652 Servo Power Motor Drive User Guide and Specifications This user guide describes the electrical and mechanical aspects of the MID-7654/7652 servo power motor drive and describes how to use the MID-7654/7652 with your motion controller. Contents Conventions ............................2 Introduction............................ -
Page 3: Conventions
I/O, and other motion hardware to National Instruments motion controllers. The MID-7654/7652 can drive a broad range of servo motors with its pulse-width modulation (PWM) amplifiers with user-specified peak and continuous output current settings. In all configurations, power supplies are built in and use standard 240/120 VAC for operation. -
Page 4: What You Need To Get Started
You can use the MID-7654/7652 enclosure as a benchtop unit, panel mounted using a panel mount kit, or rack-mounted using a 19-inch standard rack kit. What You Need to Get Started To set up and use your MID-7654/7652 accessory, you must have the following items: ❑... - Page 5 MID-7654/7652 chassis, the host computer, and the MID-7654/7652 device. This includes power signals to ground and vice versa. National Instruments is not liable for any damages or injuries resulting from incorrect signal connections.
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Page 6: Electromagnetic Compatibility Information
Operation of this hardware in a residential area is likely to cause harmful interference. Users are required to correct the interference at their own expense or cease operation of the hardware. Changes or modifications not expressly approved by National Instruments could void the user’s right to operate the hardware under the local regulatory rules. -
Page 7: Front Panel Switches
Front Panel Switches Figure 1 shows the front panel for your MID-7654/7652. The DIP switches are shown with the detachable metal cover plate removed. 4 Axis Servo Motor Drive 4 Axis Servo Motor Drive AXIS 1 AXIS 2 AXIS 3... -
Page 8: Host Bus Interlock Circuit
An LED status array of 3 rows by 4 columns on the MID-7654 or 3 rows by 2 columns on the MID-7652 provides a variety of status information. Refer to Figure 1 for the location of the front panel LEDs. The LED status array is arranged by motor axes. -
Page 9: Limit Status Leds
Settings of this guide for more information. Front Panel DIP Switch Settings The MID-7654/7652 front panel has a detachable metal plate that, when removed, provides access to one 4-position DIP switch bank and either four (MID-7654) or two (MID-7652) 9-position DIP switch banks. -
Page 10: Inhibit Input Polarity Setting
This DIP switch alters only the polarity for the LEDs, not the actual limit to the motion controller. Table 4 shows the DIP switch setting for the Limit Status LED polarity selection. © National Instruments Corporation MID-7654/7652 Servo Power Motor Drive User Guide... -
Page 11: Setting Continuous And Peak Current Limits
Active-low Setting Continuous and Peak Current Limits The MID-7654/7652 uses high-efficiency PWM amplifiers configured as torque blocks (current amplifiers or transconductance amplifiers). The peak current limit is the maximum current your motor can withstand for short periods of time. The continuous current limit is the maximum current your motor can withstand indefinitely. - Page 12 10.00 1.25 2.50 2 3 4 2 3 4 4.50 9.00 1.15 2.30 2 3 4 2 3 4 3.80 7.55 1.10 2.20 2 3 4 2 3 4 © National Instruments Corporation MID-7654/7652 Servo Power Motor Drive User Guide...
- Page 13 If the value is greater than 400 W at 25% duty cycle, you may still be within the operating capabilities of the MID-7654/7652, since it is unlikely you will run all of your motors simultaneously at their maximum levels. Make a reasonable estimation of the maximum power your motors will require at any given time and verify that this value is less than 400 W at 25% duty cycle.
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Page 14: Setting Motor Inductance Levels
DIP switch settings for low and standard motor inductance. Table 7. Motor Inductance Level DIP Switch Settings Switch Setting Operation Low motor inductance Standard motor inductance (factory default) © National Instruments Corporation MID-7654/7652 Servo Power Motor Drive User Guide... -
Page 15: Back Panel Connector Wiring
Items followed by an asterisk (*) are available on the MID-7654 only. Caution Be sure to turn off the ENABLE and AC POWER switches for your MID-7654/7652 and host computer and disconnect the unit from the power outlet before making connections to your motion controller. -
Page 16: Terminal Block Wiring
You should use shielded 20 AWG wire or larger for the motor power cable. If available, connect a motor case ground wire to pin 3 (Ground/Shield) on the MID-7654/7652 as shown in Figure 7; this wire helps avoid ground loops and signal noise problems. (Case ground connects to the motor housing, not to any of the motor power terminals.) -
Page 17: Rear Guard
Depending on your motor, you may need to reverse the connections shown in Figure 7, as there is no industry standard for direction of movement relative to the positive and negative motor inputs. Table 8 shows the National Instruments motion control standard directional polarity. Table 8. National Instruments Standard Directional Polarity... - Page 18 Protection Plate Figure 9. Rear Guard Consisting of the Protection Cover, Protection Plates, and Bottom Mounting Plate The rear guard installed on the MID-7654/7652 is shown in Figure 10. Figure 10. Rear Guard Installed on the MID-7654/7652 © National Instruments Corporation...
- Page 19 Follow these steps carefully to ensure safe operation of your MID-7654/7652: Ensure that the MID-7654/7652 is powered off and disconnected from the power outlet before wiring any cables to the unit. The +5V green LED should not be illuminated after the MID-7654/7652 is powered off and disconnected from the power outlet.
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Page 20: Encoder Terminal Blocks
Plug the servo motor cables into the servo motor terminals of the MID-7654/7652. The cables must be placed over the bottom mounting plate of the rear guard. Re-attach the protection cover Insert the tab of the protection cover, shown in Figure 9, into the slot on the bottom mounting plate. - Page 21 If you require other encoder power voltages, reference an external power supply to the Digital Ground signal on the 8-pin encoder terminal block. The MID-7654/7652 supports differential inputs for Phase A, Phase B, and Index signals. You can easily accommodate encoders with various phase relationships by swapping the signals and/or connecting them to the inverting inputs as required by your application.
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Page 22: Limit Switch Terminal Blocks
Figure 16. Limit Switch Terminal Block Pin Assignment (Passive Limit Switch Connection Example) You can configure the inhibit output signal to be asserted low or asserted high from the MID-7654/7652 when an axis is inhibited. This signal can be useful for actuating mechanical brakes or for monitoring an axis status. -
Page 23: Analog I/O Terminal Blocks
To use the step and direction connector, select an unused axis on the MID-7654/7652 and connect the step and direction outputs for that axis to your stepper drive. Refer to Figure 21 for the terminal block pin assignments. -
Page 24: Cable Installation For Ce Compliance
All cables must be properly grounded to the strain-relief bar, which grounds them to the MID-7654/7652 chassis ground. Follow these steps to ground the cables to the strain-relief bar: Remove the outer jacket from the section of the cable to be inserted between the strain-relief bar clamp and foam, as shown in Figure 22. -
Page 25: Accessories Included For Optional Use
Accessories Included for Optional Use Strain-Relief Bar Installation The strain-relief bar provides strain relief for wiring to the back panel terminals of the MID-7654/7652. It must be used to provide necessary grounding for CE compliance. Refer to the Cable Installation for CE Compliance section of this guide for more information. -
Page 26: Panel Mount Kit Installation
The panel mount kit allows you to mount the MID-7654/7652 inside a cabinet or enclosure. Attach the panel mount kit to the rear and front set of screw holes on the side panels of the MID-7654/7652, as shown in Figure 24, using the provided screws. -
Page 27: Changing The Line Voltage
Close the hinged cover. Amplifier/Driver Command Signals The PWM amplifiers used in the MID-7654/7652 accept an industry-standard ±10 V analog torque (current) command signal. Servo motion controllers used with the MID-7654/7652 provide this standard output and are programmed to close both the velocity loop and position loop using an enhanced PID algorithm. - Page 28 Breakpoints ............6-position mini-combicon 3.81 mm plug (1 total) Triggers ..............6-position mini-combicon 3.81 mm plug (1 total) Step/Direction ............8-position mini-combicon 3.81 mm plug (1 total) Analog input ............6-position mini-combicon 3.81 mm plug (1 total) © National Instruments Corporation MID-7654/7652 Servo Power Motor Drive User Guide...
- Page 29 CAN/CSA C22.2 No. 1010.1:1992/A2:1997 UL Recognized to UL 508C, power conversion equipment, File # E208822 Note For UL and other safety certifications, refer to the product label or the Online Product Certification section. MID-7654/7652 Servo Power Motor Drive User Guide ni.com...
- Page 30 Certification column. Environmental Management National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers. For additional environmental information, refer to the NI and the Environment Web page at .
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Page 31: Where To Go For Support
National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. National Instruments also has offices located around the world to help address your support needs. For telephone support outside the United States, contact your local branch office. You... - Page 32 For patents covering National Instruments products/technology, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. Refer to the Export Compliance Information at ni.com/legal/ export-compliance for the National Instruments global trade compliance policy and how to obtain relevant HTS codes, ECCNs, and other import/export data.
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