SIGMATEK DIAS Drive 310-23 servo amplifier

In industrial servo drive systems, SIGMATEK DIAS-Drive 310-23 is a three-axis servo amplifier designed for multi axis motion control, belonging to the DIAS Drive series. It is suitable for frequency, torque, speed, or position control of synchronous servo motors, linear motors, torque motors, and asynchronous motors. For on-site engineers, understanding their electrical boundaries, installation specifications, safety functions, feedback interfaces, fault codes, and maintenance replacement processes is key to quickly locating problems, reducing downtime, and ensuring safe equipment operation. This article will systematically review the technical points and troubleshooting path of DIAS-Drive 310-23 from the perspective of engineering practice.

System positioning and technical data

The model of DIAS Drive 310-23 is SDD310-23, which is a three-axis servo amplifier. Its rated input voltage is 3 × 230 V AC -10% to 480 V AC+10%, frequency is 45 to 65 Hz, suitable for TN or TT power supply systems, neutral point grounded, maximum symmetrical current is 5000 A rms. The rated power is 14 kVA in S1 mode. The rated DC bus voltage is 290 to 680 V DC, and the overvoltage protection limit is 450 to 900 V DC. The auxiliary power supply is+24 V DC, ranging from 22 to 30 V, with a power of 35 W. The braking power supply is maintained at+24 V-BR, ranging from 25 to 27 V, with a maximum holding braking current of 2 A per axis and a maximum switching energy of 100 mJ. The rated current per axis is 10 A rms, and the maximum locked rotor current after starting for 500 ms is 7 A rms. The maximum continuous total current for all axes is 20 A rms. The peak output current of axis 1 and axis 3 is 20 A rms for a maximum of 5 seconds, and axis 2 is 10 A rms. The maximum output frequency is 8 kHz, the PWM frequency is 8 kHz, and the regulator frequency is 16 kHz.

In terms of environmental conditions, the working temperature is rated at 0 to+45 ° C, and a derating of 2.5%/K is required for+45 to+55 ° C. The working humidity is non condensing from 0 to 95%. Installation altitude from 0 to 2000 meters, with a derating of 0.5 ° C per 100 meters above 2000 meters. Pollution level 2, overvoltage category III, protection level IP 20. The installation position should be vertical, and controlled internal fans should be used for forced ventilation. Storage temperature -25 to+70 ° C, maximum variation of 20 K/h, maximum humidity of 95% non condensing. The dimensions are approximately 378/472 mm in height (including connectors), 158 mm in width, and 240 mm in depth. These data are important criteria for selection, replacement, and installation.

Installation and wiring points

During installation, the servo amplifier must be installed vertically to ensure optimal cooling. Adequate cooling and filtered air must be provided inside the control cabinet. The motor cable and control cable must be routed separately, with a minimum spacing of 100mm, to reduce the interference of high noise from the motor cable on the control cable. The motor and feedback cable must use shielded cables, with both ends of the shielding layer grounded. All interfaces connected to the servo amplifier are connector plugs (except for grounding bolts) for easy replacement and cable prefabrication.

The main power supply is connected to X1B and supports 230 V AC to 480 V AC. When non grounded power supply is used, overvoltage protection must be added to the main power supply of the control cabinet. If a group of amplifiers bridges the intermediate circuit, the input voltage of that group must also be bridged. Connect the 24V auxiliary power supply and the holding brake power supply to X1A. The grounding of the 24V power supply must be done near the power supply. Maintaining braking can be independent of the 24 V auxiliary voltage and controlled through a+24 V-BR input. The DC bus can be bridged with other servo amplifiers through X1B/2 (+DC) and 3 (- DC) connectors. When connecting the external regeneration resistor, the connection between Rint (X1B terminal 4) and Rtr (X1B terminal 5) must be removed. The external resistor should be connected to terminals 2 and 5, and a 1000 V DC slow melting fuse must be used at both ends. The brake resistor fuse protects against cable short circuits, and there is electronic protection inside the amplifier.

The motor is connected to X3, X4, and X5, and the length of the motor cable is limited to 25 meters. If it is longer, suppression coils need to be added. The classic emergency stop function (Stop Category 0) requires an external KEM coil and REM resistor. The KEM coil must be connected before the amplifier is enabled and disconnected at least 1 ms after the amplifier is disabled. The resistance value and power of REM can be calculated according to the formula: R_EM=maxSPEED × K_Erms/(I-max × 0.8), P_EM=(I-max × 0.8) ² × R_EM/10. For maintaining brake control for personnel safety, it is necessary to add safety contacts that meet safety standards in the+24 V-BR voltage path. Nevertheless, there is still a risk of injury or equipment damage when maintaining brake mechanical failure.