存储卡
伺服电动机有两项技术值得注意，一是高密度电机，采用一种叫“大电机”的设计思想。例如六九槽电机，定子由九个独立的构成，在每个上绕制集中线圈，然后再将九个拼装起来，形成九个槽的电机铁芯。由于每个是独立绕制和整形，所以即使采用自动机绕，也能保持槽满率高达90%。这类电机制造工艺好，空间利用和体积都达到了小化，故称为高密度电机。从运行原理上讲，这类电机不属于旋转磁场电机，它在三相脉振磁场下工作，因此，它的适用性、设计方法和运行方式都有特殊性，所以这类电机不适合方波电流驱动。
另一类是嵌入式磁钢速率伺服电动机，它可利用凸效应引起的交、直轴电感随位置变化的特点，构成真正意义上的无位置传感器速率伺服电动驱动系统。
传感器
除了各类光电编码器以外，磁编码器值得关注。磁编码器的体积和重量都比光电编码器小几十倍，温度范围更宽，几乎不怕冲击和振动。其工作原理非常简单，它的定子是一颗内嵌霍尔磁敏元件和DSP的芯片，体积可以小到MSOP-24封装，它的转子是一颗两磁钢。它的分辨率10—12位，精度8—10位。这种磁编码器已有供应。
作为空间应用，为了满足-35℃—80℃环境要求，几乎难以采用传统的光电编码器，为此我们自行研制了磁编码器，分辨率16位，精度12位。磁编码器信号处理电路共存于驱动控制电路（FPGA）中，形成传感器与驱动控制电路一体化。
电流传感器是伺服控制必不可少的，小功率系统可以采用电阻采样，一般可采用 [1] 霍尔电流传感器。两种方法都要将模拟信号转换成数字信号，然后参于数字伺服控制。上述A/D转换的输出形式通常是串行数字脉冲或脉宽调制信号。
SE73Profibus-DP interface card (Commander SE)
SE73-UGSE73 (Profibus-DP) User Guide
SE74Interbus-S interface card (Commander SE)
SE77CO CANOpen interface card (Commander SE)
SE77CO-UGSE77CO (CANOpen) User Guide
SE77DNDeviceNet interface card (Commander SE)
SE77DN-UGSE77DN (DeviceNet) User Guide
SE-UG Commander SE Users Guide
SM-CANOPEN CANOpen Solutions Module
SM-CANOPEN CANOpen Solutions Module
SM-CANOPENCANOpen Solutions Module
SMCO-UGSM-CANOpen User Guide
SM-DACSM Fan and Pump Duty-Assist Preprogrammed Option Module
SM-DEVICENET DeviceNet Solutions Module
SM-DEVICENETDeviceNet Solutions Module
SMDN-UGSM-DeviceNet User Guide
SM-ENCODER PLUSEncoder Plus Solutions Module provides an additional incremental encoder feedback port.
SMEP-UGSM-Encoder Plus User Guide
SM-ETC15 Pin D Shell to 15 pin screw terminal break out board for servo and vector motor encoder feedback cable
SM-ETHERNETEthernet TCP/IP Solutions Module
SM-EZMOTION Motion Made Easy Solutions Module Utilizing PowerTools programming software
SMEZ-UG SM-EZMotion User Guide
SM-FSCSM Flying Shear Control Preprogrammed Option Module
SM-HEATSINK DBR1Braking Resistor 75 Ohm 50 Watt Heatsink mount for Unidrive SP size 1
SM-HEATSINK DBR2 Braking Resistor 37.5 Ohm 100 Watt Heatsink mount for Unidrive SP size 2
SM-I/O LITEI/O Lite Solutions Module - (1) +/- 10V Bi-polar or 4-20mA input (3) digital inputs (1) 0-10V or 4-20mA output (1) relay output (1) Incremental Encoder Speed Reference input
SM-I/O LITE I/O Lite Solutions Module - (1) +/- 10V Bi-polar or 4-20mA input (3) digital inputs (1) 0-10V or 4-20mA output (1) relay output (1) Incremental Encoder Speed Reference input
SM-I/O PLUSI/O Solutions Module High Performance (2) +/- 10V analog input (1) +/- 10V output (3) digital inputs (3) programmable digital I/O (2) relay output
SM-I/O TIMERI/O Lite Solutions Module w/real time clock for scheduling events (1) +/- 10V Bi-polar or 4-20mA input (3) digital inputs (1) 0-10V or 4-20mA output (1) relay output (1) Incl Enc Spd Ref input
SM-I/O TIMER I/O Lite Solutions Module w/real time clock for scheduling events (1) +/- 10V Bi-polar or 4-20mA input (3) digital inputs (1) 0-10V or 4-20mA output (1) relay output (1) Incl Enc Spd Ref input
SMIB-UGSM-Interbus-S User Guide
SM-INTERBUSInterbus-S Solutions Module
SM-KEYPADLED Keypad 7 digit LED data display Configured for Unidrive SP
SM-KEYPAD PLUS LCD Keypad back-lit dual language on-screen help remote mountable
SMPB-UG SM-Profibus User Guide
SM-PELVPELV Solutions Module - Isolated I/O to NAMUR NE37 specification for chemical industry applications
SM-PELV PELV Solutions Module - Isolated I/O to NAMUR NE37 specification for chemical industry applications
SM-PROFIBUS Profibus-DP Solutions Module - Fieldbus Option Only
SM-PROFIBUSProfibus-DP Solutions Module - Fieldbus Option Only
SM-RESOLVERResolver Solutions Module providing a resolver feedback port w/simulated encoder output
SM-SERCOSSERCOS Solutions Module
SM-SLMSLM Solutions Module
SMUE-UGSM-Uni Encoder User Guide
SM-UNI ENCODERUniversal Encoder Plus Solutions Module provides an additional increamental or Absolute encoder feedback port and simulated encoder output.
SM-WinderSM Speed and Torque based Centerwind Preprogrammed Option Module
SNCDD-001.5mso-spacerun: yes> Sync in/out cable 7 Pin Mini-DIN connector on one end and an 8 Pin Mini -DIN connector on the other 1.5 ft Length (FM3/4 to FM3/4)
SP1201-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Heavy Duty - 4.3A (1hp)
SP1201-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Heavy Duty - 4.3A (1hp)
SP1201-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 5.2A (1.5hp) Heavy Duty - 4.3A (1hp)
SP1202-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Heavy Duty - 5.8A (1.5hp)
SP1202-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Heavy Duty - 5.8A (1.5hp)
SP1202-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 6.8A (2hp) Heavy Duty - 5.8A (1.5hp)
SP1203-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Heavy Duty - 7.5A (2hp)
SP1203-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Heavy Duty - 7.5A (2hp)
SP1203-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 9.6A (3hp) Heavy Duty - 7.5A (2hp)
SP1204-LCDUnidrive SP with LCD Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Heavy Duty - 10.6A (3hp)
SP1204-LEDUnidrive SP with LED Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Heavy Duty - 10.6A (3hp)
SP1204-NKPUnidrive SP without Keypad 230Vac Max Cont Output Current (hp): Normal Duty - 11A (3hp) Heavy Duty - 10.6A (3hp)
SP1401-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Heavy Duty - 2.1A (1hp)
SP1401-LEDUnidrive SP with LED Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Heavy Duty - 2.1A (1hp)
SP1401-NKPUnidrive SP without Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 2.8A (1.5hp) Heavy Duty - 2.1A (1hp)
SP1402-LCDUnidrive SP with LCD Keypad 460Vac Max Cont Output Current (hp): Normal Duty - 3.8A (2hp) Heavy Duty - 3.0A (2hp)