1. Overview
ARD series intelligent motor protector (hereinafter referred to as protector) can perform various conditions such as start timeout, overload, phase failure, unbalance, underload, ground/leakage, blockage, short circuit and external fault during motor operation. Protection, and SOE fault event recording function, convenient for on-site maintenance personnel to find the cause of the fault. Suitable for coal, petrochemical, smelting, electric power, ships, and civil construction. The protector has RS485 remote communication interface, DC 4 ~ 20mA analog output, and PLC, PC and other control machines form a network system. Remote monitoring of motor operation.
2. Model Description
ARD2(L) intelligent motor protector
Table 4 Design serial number
Table5 Rated current
Table 6 Additional features
Note: 1. When the additional function is equipped with leakage protection L, it is necessary to purchase zero-sequence transformers with different apertures according to the actual current.
ARD2F intelligent motor protector
Table 7 Additional features
Notes:
1. With start control, the protector provides up to 2 start relays for sequentially controlling the closing/opening of the external 2 contactors, thus realizing different starting modes of the motor (such as Y-∆ conversion start, positive and negative Transfer control, auto-coupled step-down start, etc.);
2, the temperature protection measurement range: thermal resistance 100Ω ~ 30kΩ;
3. For customers without display requirements, a 90L display unit must be ordered in a batch of orders for debugging purposes;
4. When the additional function is equipped with leakage protection L, it is necessary to purchase zero-sequence transformers with different apertures according to the actual current.
5. Additional function When selecting SU, you must select Q at the same time. The loss of pressure (anti-shake) is the need to start the control function.
6. additional features optional 2C and T two.
Table 8 Display method
ARD3 Intelligent motor protector
Table 9 Starting method
Notes:
1) Manual mode: The protector participates in the control. When the start mode is direct start (full pressure start) and the two-way start, the protector is set to manual mode.
2) Two-step mode: When the protector participates in the control, when the start mode is star/delta start (two relays) and autotransformer (two relays), the protector is set to two-step mode.
Table 10 Additional features
Notes: 1. When the additional function is equipped with leakage protection L, it is necessary to purchase zero-sequence transformers with different apertures according to the actual current.
2. For customers without display requirements, a 90L display unit must be ordered in a batch of orders for debugging purposes;
3. When the additional function is equipped with leakage protection L, it is necessary to purchase zero-sequence transformers with different apertures according to the actual current.
4. additional features optional 2C and T two.
ARD3T Intelligent motor protector
The main switch quantity is 4DI, 4DO, and the main switch type is shown in Table 11:
Table 11 Body switch type
Measurement module: The measurement module includes two types of current measurement modules and current/voltage measurement modules.
The current measurement module and current/voltage measurement module are classified in Table 12. The correspondence between motor current and ARD3T current measurement module is shown in Table 13.
Table 12 Measurement module classification
Note: The 660V voltage function requires special labeling. The default is 380V.
Table 13 Correspondence between motor current and measurement module
If the voltage function is required, change the corresponding model of “ARD3T Current Measurement Module” in Table 13 to “UAXX”. For example, the motor needs 5.5kW, with voltage measurement function. Query the corresponding measurement module according to Table 4 as “A 25”. ", directly replaced by "UA25".
From now on, it is an additional function. If you need the following additional functions, select the corresponding function to fill in the model additional function.
Switching module: The switching module classification is shown in Table 14:
Table 14 Switch Module
The temperature module is shown in Table 15:
Table 15 temperature module
Analog modules are shown in Table 16.：
Table 16 Analog module
The display module is shown in Table 17:
Table 17 Display module
The communication module is shown in Table 18:
Table 18 Communication module
The leakage current function and the type of leakage transformer are shown in Table 19:
Table 19 Leakage function
Anti-shake function: SU (including voltage function).
tE time protection: tE.
Power function: Ep.
Notes:
1. The main body and measurement module are mandatory modules.
2. If the main switch type is not specified, the default is “K1” DI is the dry contact, and the control DO working power is AC220V.
3. The switch quantity, temperature, analog quantity, display and communication module are optional modules, and only one type can be selected for each type of module.
4. The length of the standard cable between the modules is 25mm; the length of the standard display module cable is 1m; the length of the standard measurement module cable is 1m.
5. The length of the display module length can be selected: 1m, 2m, 3m. When the standard length 1m does not meet the requirements for use, 2m and 3m can be selected.
6. After the ARD3T is connected through the connecting line, the total length from the first module to the last module does not exceed 5m, otherwise the product cannot be guaranteed to work normally.
7. After the voltage function is added, the line voltage, active power, power factor, apparent power, and active energy can be measured. Overvoltage, undervoltage, phase sequence, and underpower protection can be achieved.
8. After adding the analog module, it can realize 4~20mA input measurement and 4~20mA transmission output. 4 to 20 mA input protection is possible. Transmission output types include: A, B, C phase current; AB, BC, CA line voltage; frequency; active power; main body PTC; temperature module three-way temperature input; analog module two-way analog input.
9. After adding the temperature module, 3 channels of temperature measurement can be realized. The available sensor types are PT100, PT1000, Cu50, PTC, NTC. The 3-way sensors can be of the same type or different types. When the sensor type is: PT100, PT1000, Cu50, the display value and protection value unit are °C; when the sensor type is: PTC, NTC, the display value and protection value unit are Ω.
10. The dual MODBUS is realized by the main body with one MODBUS and the communication module with one MODBUS.
When the leakage function is selected, the type of leakage and the corresponding type of transformer should be marked. L35, L70, L105 means that the perforations of the transformer are 35mm, 70mm and 105mm respectively.
11. When the anti-shake function is selected, the voltage function is standard, and it is not necessary to select the voltage function.
3. Technical Indicators
ARD2(L)、ARD2F、ARD3 Main Specifications
ARD3T Main Specifications
4. Product Features
Description: “√” means standard“■” means optional
4. Wiring
ARD2(L) motor protector
ARD2F、ARD3 motor protector
ARD3T motor protector
Subject module
Measuring module：
Analog module：
Temperature module：
Two-wire system
Three-wire system
Switch module：
Communication module：
