
EC-TX823/821 Optical Fiber Expansion Module EC-TX823/821 Optical Fiber Expansion Module EC-TX823/821 Optical Fiber Expansion Module
EC-TX823/821 Optical Fiber Expansion Module
User Manual
Preface
Thank you for choosing INVT EC-TX823/821 optical fiber expansion modules.
EC-TX823/821 optical fiber expansion module is mainly used for the expansion of
functional modules. The EC-TX823 module includes three fiber optic interfaces, while the
EC-TX821 module includes one fiber optic interface. The modules need to be used with the
GD880 series VFD control box.
This manual describes the EC-TX823 module as an example. The EC-TX821 module only
has 2 fewer fiber optic interfaces than the EC-TX823 module and will not be introduced
separately.
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:
Directly installed on the expansion slot of the GD880 series VFD control box, powered
by the control box without the need for an external power supply
Used with the expansion extending board to enable slot expansion of the control box
Used with the IVDM-10 module to achieve AC line voltage detection for GD880 series
products such as active rectifier and regenerative rectifier
Used with the IVDM-20 module to detect the input and output voltage and current of
the system
Includes three/one fiber optic interface(s), supporting a 50MBd fiber optic
transmitting rate
1Product overview
1.1 Model description
Figure 1-1 Product nameplate and model designation
Product model EC -TX 823
Product category
EC: expansion module
Distinguishing code
821: indicates one optical-fiber communication
823: indicates three optical-fiber communication
Module category
TX: communication module
Manufacture No. XXXXXXXXXXXXXXX
EC-TX823
Nameplate
Product model
1.2 Specifications
Table 1-1 Specifications
Parameters Specification
Working temperature -10–50ºC
Fixed with snap-fits and screws
Ingress protection (IP) rating
1.3 Structure
Figure 1-2 Structure diagram
2
1
3
4
56
7
8
9
Table 1-2 Component description
No. Name Description
1 STATUS
indicator
On: The power supply is normal.
Off: The power supply is abnormal.
2 FAULT
indicator Standby
3 Installation
fixing hole
To fix the expansion module and maintain a good connection of
the PE layer
4 X1 fiber optic
terminal Fiber optic communication port 1
5 X2 fiber optic
terminal Fiber optic communication port 2
6 X3 fiber optic
terminal Fiber optic communication port 3
Including the model and sequence number of the expansion
module
To connect the expansion module to the control box
To align the expansion module and control box for easy
installation
2Installation and wiring
2.1 Installation precautions
Make sure the device have been powered off before installation.
There are 3 expansion module interfaces on the control box (expansion
slot 1, expansion slot 2, expansion slot 3). You can use expansion slot 2
or expansion slot 3 according to the actual wiring.
It is recommended to install the fiber optic expansion module at
expansion slot 3.
Required tools: Phillips screwdriver PH1, straight screwdriver SL3
Table 2-1 Screw torque requirements
2.2 Dimensions
The size of the EC-TX823 optical fiber expansion module is 73.5×74×23.3mm (W*H*D), as
shown in Figure 2-1.
Figure 2-1 Product outline and mounting dimensions diagram (unit: mm)
X1
LED2
LED1
M3
STATUS
FAULT
72
73.5
23.3
22.5
74
53
8.25
2.3 Installation instructions
It is recommended to place the EC-TX823 fiber optic expansion module at expansion slot 3
of the control box. The following is an example of the installation at slot 3.
Step 1 Place the expansion module in the corresponding position of the control box
expansion slot 3, align it with the slot, and then buckle it together.
Step 2 Align the expansion module positioning hole with the positioning stud.
Step 3 Fix with a M3 screw. The installation is complete.
Expansion
slot 1
Expansion
slot 2
Expansion
slot 3
Step 1 Step 2 Step 3
Note:
The expansion module and control box are electrically connected through slots.
Please install them in place.
To ensure the reliable operation of the expansion module and meet EMC requirements,
please tighten the screws according to the recommended torque for reliable
grounding.
2.4 Disassembly instructions
You can disassembly the module by reversing the order of steps described in section 2.3
Installation 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.
2.5 User's wiring terminal
Figure 2-2 Terminal diagram
X1
VT1 VR1
X1 X3X2
VT2 VR2 VT3 VR3