invt IVDM-20 DC Voltage Detection Module User Manual

invt IVDM-20 DC Voltage Detection Module

Product Information

The IVDM-20 DC Voltage Detection Module is a synchronous voltage detection module designed for detecting DC voltage. It is equipped with a current detection Hall component and is capable of voltage detection and current sampling. The module has a supply voltage/current specification and can be connected for communication using a specific mode. It also has a structure diagram, indicating the various components and their descriptions.

Thank you for choosing INVT IVDM-20 DC voltage detection module.
IVDM-20 DC voltage detection module is mainly used in DC-DC bidirectional DC power supply products to detect the input and output voltage and current of the system. It needs to be used with the GD880 series VFD control box. The module transmits the detection signal to the control box through optical fibers, achieving monitoring of system voltage and current.
This manual describes the product overview, installation, wiring, and commissioning instructions. Before installing the VFD, read this manual carefully to ensure the proper installation and running with the excellent performance and powerful functions into full play.
Product features:

• Supports one DC voltage detection of 0‒1000VDC
• Supports two voltage type open-loop Hall current detection
• Adopts optical-fiber communication, enabling fast and stable communication rate
• Supports rear mounting method, facilitating dismounting and mounting

Product Overview

Model description

Specifications

Technical parameters

Structure
Table 1-3 Component description

Cable cross-sectional area: 0.5–2.5mm2

2| X2-Current detection terminal A| Current detection Hall component wiring terminal A

Cable cross-sectional area: 0.5–2.5mm2

Use shielded four-core twisted-pair cable with both ends

grounded. The total length of the cable is less than 1.5m.

3| X2-Current detection terminal B| Current detection Hall component wiring terminal B Cable cross-sectional area: 0.5–2.5mm2

Use shielded four-core twisted-pair cable with both ends grounded. The total length of the cable is less than 1.5m.

4| X3-Status indicator| PWR power supply status indicator

Red LED ON: Power supply is connected.

Red LED OFF: The module is not powered on or the power supply is abnormal.

ONLINE operation status indicator

Red LED flashes: The communication is normal. Red LED OFF: Operation exception.

5| X4-24VDC power input terminal| Externally powered: 24VDC±5%/200mA

Two-core twisted-pair cable is recommended.

Cable cross-sectional area: 0.5–2.5mm2

6| X5-Optical fiber connection terminal| The expansion module communicates with the control box through optical fiber.

Plastic optical fiber

Installation and wiring

Installation precautions

• Required tools: Phillips screwdriver PH1, straight screwdriver SL3
  Table 2-1 Screw torque requirements Screw size| Fastening torque
  ---|---
  M3| 0.55 N·m
  M4| 1.2 N·m

Dimensions
The dimensions of the DC voltage detection module is 37.4x113x180 mm (WDH), as shown in Figure 2-1.

Installation instructions
The rear mounting method is used. Align the installation holes and tighten the screws.

Note:

• Ensure that all terminals and fiber optic plugs are installed in place for effective electrical connection.
• The module is grounded through contact between its exposed metal shell and the assembly board inside the cabinet, so the assembly board must be an exposed metal plate. To ensure the reliable operation of the module and meet the EMC requirements, please tighten the screws to ensure reliable grounding.

Disassembly instructions

• Step 1 Disconnect the power supply and disassemble all cables connected to the expansion module.
• Step 2 Use a Phillips screwdriver to remove the grounding screw of the module. Step 3 Pull the module out to a suitable position.

User’s wiring terminal
Table 2-2 X1 terminal function definition

Note: The positive and negative DC voltage wiring on the IVDM-20 must match the positive and negative poles of DC-DC output wires.
Table 2-3 X2 terminal function definition

Table 2-4 X3 terminal function definition

LED OFF: The module is not powered on or the power supply is abnormal
ONLINE| State indicator| Red LED flashes: The communication is normal.

Red LED OFF: Operation exception.

Table 2-5 X4 terminal function definition

Table 2-6 X5 terminal function definition

The IVDM-20 DC voltage detection module is connected to the fiber optic expansion module EC-TX821/TX823 through optical fibers, transmitting the detection signal to the control box. Figure 2-4 shows the external wiring diagram of the IVDM-20 module, taking the fiber optic expansion module EC- TX823 as an example:

Wiring precautions

• It is recommended to place the fiber optic expansion module EC-TX821/TX823 at expansion slot 2 and slot 3 of the control box.
• Handle the optical fibers with care to prevent the fiber optic cable and connector damage, and keep the connector clean.
• Ensure that the direction of the connector is correct when installing. Align and insert the connector into the interface until the “click” sound is heard, indicating it has been installed.
• When disassembling, grip the connector tightly and pull it out. Do not directly pull the optical fiber cable.

Commissioning instruction

Table 3-1 Function code parameters related to IVDM-20

Function code| Name| Description| Setting range| Default
---|---|---|---|---
P54.00| Module type| 0: One-expand-three expansion modules

1: DC/AC voltage sampling card

| 0–1| 1
P54.01| Module online status| Bit0–Bit5| Online status of modules in expansion slots (0: Offline 1: Online)| 0–1| 0

Note: For other parameter settings of the IVDM-20 DC voltage detection module, see software manuals of the GD880 series rectifier unit.

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