步进电机变得非常热

3D打印 马林鱼 步进驱动器 步进器 发动机 马克
2021-05-13 14:13:13

我将带有 TMC 2209 驱动程序的 MKS Gen L V2.1 安装到我的 Creality Ender-3 打印机并将软件更新为 marlin 2,步进电机变得非常热。我应该怎么解决这个问题。以下代码来自显示电流的 configuration_adv.h 文件。

    #if AXIS_IS_TMC(X)
    #define X_CURRENT       800        // (mA) RMS current. Multiply by 1.414 for peak current.
    #define X_CURRENT_HOME  X_CURRENT  // (mA) RMS current for sensorless homing
    #define X_MICROSTEPS     32    // 0..256
    #define X_RSENSE          0.11
    #define X_CHAIN_POS      -1    // <=0 : Not chained. 1 : MCU MOSI connected. 2 : Next in chain, ...
  #endif

  #if AXIS_IS_TMC(X2)
    #define X2_CURRENT      800
    #define X2_CURRENT_HOME X2_CURRENT
    #define X2_MICROSTEPS    16
    #define X2_RSENSE         0.11
    #define X2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Y)
    #define Y_CURRENT       800
    #define Y_CURRENT_HOME  Y_CURRENT
    #define Y_MICROSTEPS     32
    #define Y_RSENSE          0.11
    #define Y_CHAIN_POS      -1
  #endif

  #if AXIS_IS_TMC(Y2)
    #define Y2_CURRENT      800
    #define Y2_CURRENT_HOME Y2_CURRENT
    #define Y2_MICROSTEPS    16
    #define Y2_RSENSE         0.11
    #define Y2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z)
    #define Z_CURRENT       800
    #define Z_CURRENT_HOME  Z_CURRENT
    #define Z_MICROSTEPS     32
    #define Z_RSENSE          0.11
    #define Z_CHAIN_POS      -1
  #endif

  #if AXIS_IS_TMC(Z2)
    #define Z2_CURRENT      800
    #define Z2_CURRENT_HOME Z2_CURRENT
    #define Z2_MICROSTEPS    16
    #define Z2_RSENSE         0.11
    #define Z2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z3)
    #define Z3_CURRENT      800
    #define Z3_CURRENT_HOME Z3_CURRENT
    #define Z3_MICROSTEPS    16
    #define Z3_RSENSE         0.11
    #define Z3_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z4)
    #define Z4_CURRENT      800
    #define Z4_CURRENT_HOME Z4_CURRENT
    #define Z4_MICROSTEPS    16
    #define Z4_RSENSE         0.11
    #define Z4_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(E0)
    #define E0_CURRENT      850
    #define E0_MICROSTEPS    32
    #define E0_RSENSE         0.11
    #define E0_CHAIN_POS     -1
  #endif

谢谢。

1个回答

我注意到在使用 TMC2209 驱动程序的 BIGTREETECH-SKR-mini-E3 的“configuration_adv.h”中,类似的部分有:

#if HAS_TRINAMIC_CONFIG

  #define HOLD_MULTIPLIER    0.5  // Scales down the holding current from run current
  #define INTERPOLATE       true  // Interpolate X/Y/Z_MICROSTEPS to 256

  #if AXIS_IS_TMC(X)
    #define X_CURRENT       580        // (mA) RMS current. Multiply by 1.414 for peak current.
    #define X_CURRENT_HOME  (X_CURRENT/2)  // (mA) RMS current for sensorless homing
    #define X_MICROSTEPS     16    // 0..256
    #define X_RSENSE          0.11
    #define X_CHAIN_POS      -1    // <=0 : Not chained. 1 : MCU MOSI connected. 2 : Next in chain, ...
  #endif

  #if AXIS_IS_TMC(X2)
    #define X2_CURRENT      800
    #define X2_CURRENT_HOME X2_CURRENT
    #define X2_MICROSTEPS    16
    #define X2_RSENSE         0.11
    #define X2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Y)
    #define Y_CURRENT       580
    #define Y_CURRENT_HOME  (Y_CURRENT/2)
    #define Y_MICROSTEPS     16
    #define Y_RSENSE          0.11
    #define Y_CHAIN_POS      -1
  #endif

  #if AXIS_IS_TMC(Y2)
    #define Y2_CURRENT      800
    #define Y2_CURRENT_HOME Y2_CURRENT
    #define Y2_MICROSTEPS    16
    #define Y2_RSENSE         0.11
    #define Y2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z)
    #define Z_CURRENT       580
    #define Z_CURRENT_HOME  Z_CURRENT
    #define Z_MICROSTEPS     16
    #define Z_RSENSE          0.11
    #define Z_CHAIN_POS      -1
  #endif

  #if AXIS_IS_TMC(Z2)
    #define Z2_CURRENT      800
    #define Z2_CURRENT_HOME Z2_CURRENT
    #define Z2_MICROSTEPS    16
    #define Z2_RSENSE         0.11
    #define Z2_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z3)
    #define Z3_CURRENT      800
    #define Z3_CURRENT_HOME Z3_CURRENT
    #define Z3_MICROSTEPS    16
    #define Z3_RSENSE         0.11
    #define Z3_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(Z4)
    #define Z4_CURRENT      800
    #define Z4_CURRENT_HOME Z4_CURRENT
    #define Z4_MICROSTEPS    16
    #define Z4_RSENSE         0.11
    #define Z4_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(E0)
    #define E0_CURRENT      650
    #define E0_MICROSTEPS    16
    #define E0_RSENSE         0.11
    #define E0_CHAIN_POS     -1
  #endif

  #if AXIS_IS_TMC(E1)
    #define E1_CURRENT      800
    #define E1_MICROSTEPS    16
    #define E1_RSENSE         0.11
    #define E1_CHAIN_POS     -1
  #endif
// ...

在 reddit 线程中步进驱动程序当前设置?,用户 brewc 发现随 Ender 3 提供的步进电机驱动器指定峰值(最大)电流,而 TMC 驱动器指定 RMS 电流。

因此,您可能希望将当前设置更改为上述 .h 文件中的设置。

当然,本着改变 Ender 3 上几乎所有内容的精神,您还可以更换具有更高电流规格的步进电机和/或为电机添加散热器。