REXRTOH INDRAMAT TVD 1.3 power module

REXRTOH INDRAMAT TVD 1.3 power module

Product positioning: TVD 1.3 is the power module of INDRAMAT modular AC drive system, which is directly connected to the three-phase 380-480V power grid, rectifies the AC power into a stable DC bus voltage (320V DC), supplies power to the drive module, and processes the regenerated electrical energy of the motor to provide control voltage for electronic components.

Core specifications and functional features of the product

1. Key electrical parameters

TVD 1.3 offers two power specifications (7.5kW and 15kW continuous DC bus power), with the core parameters compared as follows:

Parameter category TVD 1.3-08-3 (7.5kW) TVD 1.3-15-3 (15kW) Unit

Input specifications 3 × AC 380-480V (± 10%), 50-60Hz with the same left V/Hz

DC bus voltage of 320 (± 5%) is the same as the left V DC

Continuous DC bus power 7.5 15 kW

Short time DC bus power (3s, spindle drive acceleration) 15 30 kW

Peak DC bus power (0.3s, feed drive acceleration) 22.5 45 kW

Discharge resistor continuous power 0.5 1 kW

Peak power of discharge resistor 20 40 kW

Maximum regenerative energy 30 60 kW · s

Control voltage output+24V (4.9A), ± 15V (+15V: 2.5-5.1A; -15V: maximum 2A, total ≤ 4A) same as left V/A

Working temperature range: 0-45 ℃ (rated data), -25-55 ℃ (storage and transportation), same as left ℃

Protection level IP 10 (compliant with DIN 40050) same as left-

Weight 10.5 11.2 kg

2. Core functional features

Rectification and voltage stabilization: Rectify three-phase AC power into 320V DC stable DC bus voltage, which can maintain driving dynamic performance even if the grid voltage fluctuates.

Regenerated electrical energy processing: When the motor is in power generation mode, the regenerated electrical energy is converted into thermal energy through internal discharge resistors; External auxiliary release module (TBM 1.2) can be used to enhance processing capacity.

Built in protection mechanism:

Overcurrent protection: When the DC bus is short circuited or overloaded, quickly cut off the output;

Overvoltage protection: When the DC bus voltage exceeds the limit, it triggers a shutdown;

Over temperature protection: When the temperature of the heat sink is too high, a warning should be given first (power off after 30 seconds) to avoid module damage;

Short circuit protection: When the output circuit is short circuited, the internal circuit automatically cuts off the faulty channel without affecting other channels.

Power supply for electronic components: Provide+24V (load voltage) and ± 15V (measurement voltage) for all connected drive modules. In case of power failure, temporary power supply is provided by the DC bus to ensure the functionality of the driving electronic components.

Flexible control and redundancy: supports dynamic braking of DC bus (synchronous motor with short-circuit bus braking in case of fault), and can be configured with external jumper to drive the braking mode after power failure; Support redundant configuration to enhance system reliability.

Electrical Connection and Installation Specification

1. Core connection configuration

TVD 1.3 needs to be used in conjunction with supporting components, and there are two main connection methods:

Compact configuration (including NAM 1.3 module): NAM 1.3 is an integrated power connection module with built-in commutation choke, buffer capacitor, and DC bus smoothing choke to reduce wiring workload. It is compatible with TVD 1.3-08 (with NAM 1.3-08) and TVD 1.3-15 (with NAM 1.3-15).

Distributed configuration (independent components): It is necessary to separately connect the commutation choke (KD 26/23), buffer capacitor (CZ 1.2-01-7), and smoothing choke (GLD 16/17), which are suitable for space limited or special working condition scenarios.

2. Key wiring requirements

Main power supply wiring: three-phase 380-480V connected to terminal X7 (1U1/1V1/1W1), with a wire cross-sectional area of ≥ 10mm ² (copper core, rated at 75 ℃), requiring gL type fuses (maximum 35A) or circuit breakers (15A/30A, corresponding to 7.5kW/15kW).

DC bus wiring: Connect the drive module through a bus bar, with a wire cross-sectional area of ≥ 4mm ² (7.5kW) or 10mm ² (15kW), and a maximum wiring distance of 1 meter. Twisted pair cables are required to reduce interference if exceeded.

Control signal wiring: 16 pin bus cable (X1 terminal) is used for communication and power supply of the drive module, and a terminal plug is required to start the high-voltage part; The control terminals (X2/X3/X4/X5) are used for brake control, fault signal output, etc., with a wire cross-sectional area of ≤ 2.5mm ².

3. Installation requirements

Cabinet installation: The module protection level is IP 10 and needs to be installed in a closed cabinet with a temperature of ≤ 45 ℃ and humidity of ≤ 95% (no condensation);

Heat dissipation space: At least 80mm of ventilation space should be reserved above and below the module, and flammable materials (such as cables) should not be placed within 300mm around the discharge resistor;

Grounding specification: It is necessary to connect the cabinet PE guide rail, and the cross-sectional area of the grounding wire should be ≥ 10mm ² (copper core), ensuring that the grounding resistance is ≤ 4 Ω;

Altitude adaptation: When the altitude exceeds 1000 meters, the power usage should be reduced according to the derating curve (such as reducing the power to 80% at 2000 meters).

Troubleshooting and Maintenance

1. Fault diagnosis and localization

The front panel of the module is equipped with LED diagnostic lights, which indicate the type of fault through different colors (green/red/flashing). The core faults and troubleshooting methods are as follows:

Fault type LED indication Possible causes Troubleshooting methods

Control voltage fault (+24V/± 15V)+24V/± 15V, red light, electronic power supply loss, load exceeding upper limit, check main fuse, disconnect bus to detect voltage, reduce load

Drive or power failure Bb1 red light drive module failure, loose bus connection check drive diagnosis, re plug and unplug bus cable, confirm terminal plug installation

Overcurrent fault I-FAULT light red DC bus short circuit, motor cable damage, disconnection of drive connection, detection of bus insulation, replacement of damaged cable or drive

Release overload P-FAULT light red regeneration energy over release capability, increase auxiliary release module (TBM), reduce driving and braking frequency

Overheating fault T-FAULT light red, poor heat dissipation, high ambient temperature. Clean the heat dissipation channel, improve cabinet ventilation, and reduce module load

Overvoltage fault U-FAULT light red grid voltage too high, rectifier circuit fault check grid voltage (≤ 480V ± 10%), replace module

2. Maintenance and replacement standards

Regular maintenance: Check the tightness of the wiring terminals and the cleanliness of the heat sink every 6 months, and measure the insulation resistance (≥ 10M Ω) annually;

Module replacement: After power off, wait for 5 minutes (capacitor discharge), confirm that there is no voltage, remove the wiring, replace with a module of the same model (matching power and version), and test the bus communication and voltage output after rewiring.

Selection and ordering information

1. Core component model

Component category, model, and specification description

Power module TVD 1.3-08-3 7.5kW continuous DC bus power, 320V DC output

TVD 1.3-15-3 15kW continuous DC bus power, 320V DC output

Integrated connection module NAM 1.3-08 compatible with TVD 1.3-08, including commutation choke/buffer capacitor

NAM 1.3-15 is compatible with TVD 1.3-15, including commutation choke/buffer capacitor

Auxiliary release module TBM 1.2-040-W1 enhances release capacity (1.5kW continuous/60kW peak)

Independent component KD 26/23 commutation choke (15A/30A)

CZ 1.2-01-7 Buffer Capacitor (1mF/700V)

GLD 16/17 DC bus flat wave choke coil (25A/50A)

2. Ordering precautions

The power module should be selected based on the total power of the drive (continuous power should cover the sum of the rated power of all drives);

If the drive frequently starts, stops, or brakes, an additional auxiliary release module (TBM) or DC bus capacitor needs to be configured;

High altitude (>1000 meters) or high temperature (>40 ℃) environments require the selection of downgraded models or strengthened heat dissipation measures.

Safety and Compliance Instructions

Hazardous Area Use: Only applicable to Class I, Zone 2 hazardous environments (non flammable areas), prohibited for use in explosive environments;

Voltage safety: There is a maximum of 450V DC high voltage inside the module. After power failure, it is necessary to wait for 5 minutes for discharge, and only certified electricians are allowed to operate;

Compliance standards: comply with UL standards, DIN 40050 (protection level), EN 60204 (electrical installation) and other specifications, and confirm the compatibility with local electrical regulations before use.