REXRTOH DDS02.1/03.1 Digital AC Servo Drive

Signal processing current consumption: The power supply unit provides+24V DC and ± 15V DC power to all connected drive controllers. The total current consumption shall not exceed the output capacity of the power supply unit. The current consumption consists of three parts: the basic unit, the plug-in module, and the motor feedback. The manual provides detailed tables of current consumption for each part, which facilitates system power supply design and calculation.

Environmental conditions:

Allowable ambient temperature under rated data: 0 ° C to+45 ° C.

The maximum temperature under derating data is+55 ° C.

Storage and transportation temperature: -30 ° C to+85 ° C.

Maximum installation altitude (rated data): 1000 meters.

Protection level: IP20.

When the ambient temperature or altitude exceeds the standard, the continuous torque and short-term torque of the motor need to be reduced according to the chart.

Drive controller energy consumption: The actual energy consumption of the controller depends on the static current (I_IN) of the connected motor. The manual provides energy loss curves for the DDS02.1-W (hot technology), DDS02.1-A (cold technology), DDS02.1-F (liquid cooling), and DDS03.1-W series, which are used to calculate the heat generation and heat dissipation requirements inside the control cabinet.

Cooling method:

Thermal technology (W series): Heat is dissipated inside the control cabinet. Installation is simple, but it may require forced ventilation or air conditioning cooling of the control cabinet.

Cold technology (A series): By using external heat sinks and fans, most of the heat is dissipated outside the control cabinet, making it suitable for cabinets with limited space.

Liquid cooling (F series): Through the circulation of coolant for heat dissipation, it has extremely high efficiency and can recover some waste heat.

Motor feedback type: The basic unit is divided into two types, which only support digital servo feedback (DSF, suffix '- D') or rotary transformer feedback (RSF, suffix '- R'). When selecting, it is necessary to ensure that the motor and controller feedback type codes match.

Control cabinet planning and mechanical installation

Layout principle: The drive controller and its power unit are designed to be installed in a control cabinet or enclosed enclosure (protection level IP10). It is recommended to place high output, high current drivers as close as possible to the power supply unit to reduce line impedance and interference.

Installation spacing: The manual provides detailed installation dimension diagrams and clearance requirements between adjacent units to ensure sufficient heat dissipation space and maintenance channels, which must be strictly followed.

Key installation points for different models:

DDS02.1-W...: Installed inside a standard cabinet, pay attention to heat dissipation.

DDS02.1-A...: Using cold technology, the heat sink part extends outside the cabinet. During installation, it is necessary to use installation panels and sealing rings to ensure that the cabinet opening is sealed. External fans can be installed on adjacent units.

DDS02.1-F...: Liquid cooling model, requires matching coolant pipeline connection kit (such as SH-FL, M2-F), and strictly follows the installation specifications of the liquid cooling system.

DDS03.1-W...: The structure is more compact, and the installation method is similar to DDS02.1-W.

EMC and interference suppression: In order to comply with EMC directives (such as 89/336/EWG), it is necessary to follow the "EMC in Drive and Control Systems" project planning manual. Measures include: separate laying of power lines and signal lines, use of shielded wires and single ended grounding for analog signals, use of shielded cables or shielded routing for motor power cables, installation of recommended interference filters in the main power lines, etc.

The use of heat exchangers: If a heat exchanger is used, it must be installed and set correctly to prevent condensation water from damaging the components inside the cabinet. The cabinet should be well sealed, with a set temperature not lower than 40 ° C, and it should still be operated for a period of time after shutdown to balance the temperature inside and outside the cabinet and prevent condensation. The installation position should ensure that condensed water does not drip or splash onto electrical components.

Detailed explanation of electrical connections

General principles: Emphasize the separation of signal lines and power lines, easy replacement of connectors, proper handling of shielding, and human body electrostatic discharge.

Basic unit connection (taking DDS02.1 as an example):

① Chassis grounding: Use a wire with a cross-sectional area not less than the power cord and at least 10mm ² to connect to the grounding bar of the power unit.

② ③ ④ Motor power cable: It is recommended to use INDRAMAT original cable (including three-phase wire, protective ground wire, shielded motor temperature control and brake wire), with a maximum length of 75 meters. Pay attention to the line sequence identification when connecting.