Danfoss EEA-PAM-591-A-10 Installation Manual
Danfoss EEA-PAM-591-A-10 Installation Manual

Danfoss EEA-PAM-591-A-10 Installation Manual

Servo amplifier

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Installation Guide
Servo Amplifier
EEA-PAM-591-A-10
www.danfoss.com

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Summary of Contents for Danfoss EEA-PAM-591-A-10

  • Page 1 Installation Guide Servo Amplifier EEA-PAM-591-A-10 www.danfoss.com...
  • Page 2 Installation Guide Servo Amplifier Revision history Table of revisions Date Changed August 2023 First edition 0101 © Danfoss | August 2023 BC459665217198en-000101...
  • Page 3 Installation Guide Servo Amplifier Contents General Installation Procedure Servo Amplifier Discussed Operating Data Amplifier Settings Amplifier Set-up Application Notes Control Input Options PID Set-Up Procedure Accessory Products © Danfoss | August 2023 BC459665217198en-000101 | 3...
  • Page 4: General Installation Procedure

    "Application Notes" and "Control Input Options" sections. 5. Adjust the proportional, integral and Derivative Gains (depending on which is appropriate for your application) according to the procedure outlined in the "PID Set-Up Procedure" section. © Danfoss | August 2023 BC459665217198en-000101...
  • Page 5 Servo Amplifier Servo Amplifier Discussed This amplifier is designed to drive Vickers by Danfoss SM4 and SP4 servovalves and most other industry standard servovalves such as Moog, Atchley, Pegasus, Rexroth, etc. in open and closed loop servo systems. The package offers flexible circuitry in a standard rack mount format requiring a single +24 vdc supply.
  • Page 6 ± 50 ma when in the (A) position. This feature may be beneficial where greater control of the input span is desired. Output current can be monitored at front panel test point TP2. The output is in volts where 1 mv equals 1 ma of output current. © Danfoss | August 2023 BC459665217198en-000101...
  • Page 7: Operating Data

    Pre-amp Gain 1 to 15 v/v Drift over operating temperature range < ± .03% of full scale output at maximum gain Operating temperature range 0 to 50°C Storage temperature range -25 to 85°C © Danfoss | August 2023 BC459665217198en-000101 | 7...
  • Page 8: Amplifier Settings

    S2-6: D Gain Enable– Used to control the Derivative Gain stage input. Set closed, the stage is disabled. Switch S2-4 and switch S2-5 should never be closed at the same time as the switch. © Danfoss | August 2023 BC459665217198en-000101...
  • Page 9 Adjusted fully CW ,the output driver will be biased, 12% of full scale in the positive direction. Adjusted fully CCW, the output driver will be biased 12% of full scale in the negative direction. Factory set for zero bias. © Danfoss | August 2023 BC459665217198en-000101 | 9...
  • Page 10: Amplifier Set-Up

    4. While monitoring front panel test point TP2, adjust "current + limit" for maximum rated valve current. Adjusting Input Null While monitoring front panel test point TP1, adjust "input bias" for 0.00v reading. Amplifier Calibration Diagram Figure 1. Servovalve amplifier set-up connections 10 | © Danfoss | August 2023 BC459665217198en-000101...
  • Page 11: Application Notes

    Installation Guide Servo Amplifier Application Notes Typical position control utilizing full P.I.D. Typical velocity or pressure control. Typical force control utilizing P and D. © Danfoss | August 2023 BC459665217198en-000101 | 11...
  • Page 12 When using this configuration, care must be taken that switches S1-1 and S1-2 are not set to the same position. In this example, the command is not inverted, so switch S1-2 is set to (B). The feedback signal is inverted so switch S1-1 is set to (A). 12 | © Danfoss | August 2023 BC459665217198en-000101...
  • Page 13 TP1 reads 0.00v. If the signal is to be summed with a double ended control signal (Ex. ± 10v), apply 12 ma's and adjust the input bias for 0.00v at test point TP1. © Danfoss | August 2023 BC459665217198en-000101 | 13...
  • Page 14: Preliminary Considerations

    6. Begin increasing the DERIVATIVE Gain now, a little at a time, while observing the response carefully. The overshoot should begin to reduce as Derivative Gain is increased. Continue increasing the Derivative Gain, and applying the step input, until the overshoot is eliminated (Figure 6). 14 | © Danfoss | August 2023 BC459665217198en-000101...
  • Page 15 Some performance "drift" can be expected as the hydraulic fluid changes temperature or as new mechanical components "wear-in," producing the need for some "fine tuning" later on. Figure 2. Set-up command signal Figure 3. Increasing Proportional Gain. © Danfoss | August 2023 BC459665217198en-000101 | 15...
  • Page 16 Installation Guide Servo Amplifier PID Set-Up Procedure Figure 4. Reaching desired command level. Figure 5. Moderate overshoot. Figure 6. Eliminated overshoot by adding Derivative Gain. 16 | © Danfoss | August 2023 BC459665217198en-000101...
  • Page 17 Installation Guide Servo Amplifier PID Set-Up Procedure Figure 7. Better response using additional P and D Gain. © Danfoss | August 2023 BC459665217198en-000101 | 17...
  • Page 18: Accessory Products

    Supply voltage: + 24 vdc @ 4 w max. Command selects: 5 (± 10 v range) Ramp selects: 5 (.1 to 10 s range) Style: Eurocard format, 3U height Assembly (order) number: 02104128 18 | © Danfoss | August 2023 BC459665217198en-000101...
  • Page 19 Phone: +86 21 2080 6201 Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.

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