Nidec ASI Affinity AC Drives

AC electric drive Nidec ASI series Affinity – a specialized electric drive designed for for automated control systems for heating, water supply, ventilation and air conditioning buildings.

The use of Affinity converters allows the customer to minimize energy costs by optimizing the operating modes of the electric motor depending on external factors and environmental conditions.

Before the introduction of electrical equipment, the client has the opportunity, using special software, to make preliminary calculations of potential savings on electricity costs and evaluate the payback period of the project.

Technical characteristics of the Nidec ASI Affinity series electric drive

• Rated power: 0.75 - 132 kW; 
• Supply voltage ratings: 220 /380 /500 /690V; 
• The output frequency of the inverter: up to 3000 Hz; 
• The degree of protection of the case: IP20 (NEMA 1), IP54 (NEMA 12); 
• Temperature regime: 0˚C..+50C(operation) /-40C..+65C (storage); 
• Built-in programmable real-time logic controller (PLC); 
• Built-in EMC filter with simple shutdown; 
• The ability to connect external EMC filters and brake resistors. 

Operating modes of Affinity series frequency converters

• U/f (volt-frequency) control /scalar control of an asynchronous electric motor; 
• vector control in an open loop by an asynchronous electric motor; 
• vector control in an open loop using the Rotor Flux Control algorithm (Rotor Flux Control /RFC). 

Advantages of using Nidec ASI frequency converters of the Affinity series

• The highest degree of fire safety is ensured by using a special "Fire" mode of operation of the electric drive; 
• The presence of 2 built-in independent PID controllers allows you to minimize the use of additional equipment (simultaneous control of the valve and valve in the water supply system); 
• Free software for calculating energy savings and reducing carbon dioxide emissions, for tracking harmonic fluctuations and distortions in the network created by an electric drive, for setting up, commissioning and monitoring the operation of equipment; 
• The integrated real-time clock controller allows OEMs to reduce costs and increase productivity in stand-alone applications; 
• A special shutdown mode is designed to automatically turn off the fan or pump for a certain time when the flow rate falls below the limit value 
• The preheating mode prepares the electric motor for start-up, reduces the negative impact of condensate on the electro-magnetic and mechanical parts of the electric machine; 
• Control of permissible load levels, protection of electrical equipment in case of emergency situations caused by underloads (idle modes) and overloads – ensuring the prevention of mechanical damage in the system; 
• Reducing the time of setting up and commissioning of electrical equipment is provided by special macros optimized for the operating modes of heating, water treatment, ventilation and air conditioning systems; 
• Easy scaling of solutions, copying and restoring electric drive parameters restoring and copying electric drive parameters 
• Low noise level of electrical equipment due to high switching frequency up to 16kHz. 

Configuration of the inputs/outputs of the Affinity electronic speed controller

• 3 programmable analog inputs (0-10V, 0-20 mA, 4-20 mA); 
• 2 programmable analog outputs (0-10V, 0-20 mA); 
• 6 programmable digital inputs; 
• 3 programmable digital outputs; 
• 1 drive emergency shutdown input; 
• 1 built-in programmable relay for a current of 2A AC 240 v. 

Optional modules and extension modules for Affinity frequency converters

Parameterization and parameter display modules:

• SM Keypad – basic control panel; 
• SM Keypad Plus – multifunctional control panel; 
• USB/RS485 Cable is an interface cable for programming the drive. 

I/O Expansion Modules:

• SM-I/O Plus – I/O expansion module (2 analog inputs, 1 analog output, 3 digital inputs/outputs, 3 digital inputs, 2 2 A relay outputs); 
• SM-I/O Lite - I/O expansion module (1 analog input, 1 analog output, 3 digital inputs, 1 2A relay output, encoder input for the reference signal with a phase shift of 90); 
• SM-I/O 24V Protected - Input/output expansion module with surge protection (2 analog outputs, 4 digital inputs/outputs, 3 digital inputs, 2 2A relay outputs); 
• SM-I/O 32 is an expansion module for up to 32 digital inputs/outputs; 
• SM-I/O PELV is a high-speed input/output expansion module (1 analog input, 2 analog outputs, 1 digital input, 4 digital inputs/outputs, 2 2A relay outputs); 
• SM-I/O 120 is an input/output expansion module for 120V voltage (6 digital inputs, 2 relay outputs for 2A current). 

Automation and positioning modules:

• SM-Applications is a programmable logic controller (PLC) for creating your own applications, exchanging data via the CTNet interface; 
• SM-Applications Lite V2 is a programmable logic controller (PLC) for creating your own applications; 
• SM-Applications Plus is a programmable logic controller with high–speed inputs/outputs. 

Modules of industrial communication protocols: Modbus RTU, SM-Profibus, SM-DeviceNet, SM-CANopen, SM-Interbus, SM-Ethernet, M-EtherCAT, SM-LON, SM-CAN, SM-SERCOS.

Nominal characteristics of Affinity converters at Uin=400V (380 – 480V ± 10%)

Note: The degree of protection of the electric drive IP54 (NEMA 12), IP66 (NEMA 12) requires the addition of the index E12/E54, E12/E66, respectively. Example of designation: electric drive BA6401–E12/E54. The weight and size parameters of electric drives with a degree of protection are indicated in parentheses (...).

Nominal characteristics of Affinity converters at Uin=200V (200 – 240V ± 10%)

Nominal characteristics of Affinity converters at Uin=575V (500 – 575V ± 10%)

Nominal characteristics of Affinity converters at Uin=690V (500 - 690V ± 10%)