KOLLMORGEN S200 High Performance Compact Brushless Servo Drive

Parameter and Variable System

The behavior of the driver is defined by non-volatile parameters, state variables, and control variables.

NV parameters: stored in persistent storage, determine the configuration and operating mode of the drive (such as OpMode, CMDSrc, KVP, KIP, etc.). Save through 'Download NV'.

State variable: read-only, reflecting the real-time status of the drive (such as PosFB, VelFB, VBus, FaultCode, etc.).

Control variables: volatile, used for real-time control of specific functions (such as Command variables).

The S200 Tools software is the core tool for configuration and monitoring, allowing users to adjust parameters and observe variables in real-time in online mode, prepare configurations in offline mode, and save and reuse settings through configuration files (*. S2C).

SynqNet Network Integration and Diagnosis

SynqNet configuration

For the S200 driver equipped with the SynqNet tab, its configuration information is defined through an FPGA table, including node type, option code, number of motors/encoders, number of dedicated I/Os, etc. This ensures that the SynqNet master station can correctly identify and drive nodes.

Accessing Drive Parameters

The parameters of the drive can be read and written using MPI library methods or specialized tools (sqDriveParam, sqDriveConfig) through the SynqNet network. This requires the use of a parameter mapping file that matches the firmware version of the drive, which defines valid parameter indexes, names, data types, and ranges.

Diagnosis and troubleshooting

The S200 integrates comprehensive fault protection circuits, including protection against output short circuits, overheating, bus overvoltage/undervoltage, overcurrent (I * t), motor overheating (via SFD), and more.

Status LED indicators: constantly on (enabled without faults), off (control power not powered on), flash (ready but not enabled), slow flash (fault code).

Fault code: Specific faults are indicated by the number of LED flashes, such as 2 (motor overheating), 7 (bus overvoltage), 11 (Hall fault), 17 (SFD communication error), etc. More detailed fault information can be read through the ExtFaults variable.

Fault handling: Some faults (such as bus overvoltage) can be self reset, while latch faults need to be cleared by disabling the enable or cycling the power supply. When multiple faults occur simultaneously, prioritize reporting the highest priority fault.

Appendix Key Technical Points

Design of DC power supply

Designing a power supply for DC input drivers is crucial:

A single power supply (20-90VDC) can be used to simultaneously power the bus and control, or two independent power supplies can be used to improve safety.

The external bus capacitor is a critical component used to absorb the energy feedback during motor deceleration, provide peak power required for acceleration, stabilize the bus voltage, and reduce the peak current demand of the power supply. For example, it is recommended to use a minimum of 4000 μ F capacitor for the S20630 driver at 75VDC.

The capacitor should be an aluminum electrolytic capacitor with a rated voltage of 100V. The wiring resistance and inductance need to be controlled to avoid excessive voltage drop or bus resonance.

Do not install emergency stop switches or contactors between the bus pins of the driver and the power capacitor to prevent damage due to motor winding energy feedback when the driver is disabled.

Cable selection and wiring

Long cable impact: For DC drives, the resistance of long motor cables can cause voltage drops, affecting peak acceleration performance. In demanding dynamic applications, it is recommended to use 14 AWG cables instead of 18 AWG cables.

Customized composite cable: If the feedback and power lines are integrated into a single cable, it is strongly recommended to use a dedicated cable with a double-layer concentric shielding structure to minimize the interference of PWM noise on sensitive feedback signals. The inner shield is usually connected to the feedback power return, while the outer shield is connected to the PE.

Safety and Compliance

The S200 driver complies with multiple international standards, including UL 508C, CE (Low Voltage Directive and EMC Directive), EN50178, and EN61800-3.

Installation responsibility: The final machine manufacturer is responsible for ensuring that the entire system complies with all applicable directives and standards.

Safety operation requirements:

Emergency stop circuit: An external hard wired emergency stop circuit must be provided, which can simultaneously cut off the motor power and disable the driver.

Prevent accidental movement: Before maintenance, the power must be disconnected and wait for at least 5 minutes for the bus capacitor to discharge.

Electrical safety: It is strictly prohibited to plug or unplug connectors or wires with power on.

Thermal safety: The temperature of the driver's heat sink and external brake resistor may exceed 60 ° C, posing a risk of burns.

EMC Compliance Recommendations:

Use recommended line filters (such as Corcom, MTE, Schaffner series).

Use original or EMC designed cables.

Separate cables of different types (power supply, motor, signal) by at least 100mm for routing.