«The EC-F-ХХХХ controller for a fan with an electric motor up to 3 kW» NPFM.421417.008 is designed:
- to control the speed of a free-wheel radial fan manufactured by VEZA, directly connected to a three-phase AC motor (permanent magnet synchronous motor or asynchronous induction motor), with power range 0,55 kW to 3 kW with nominal speeds of 1500 rpm, 3000 rpm (hereinafter referred to as the electric motor) ;
- to maintain the motor speed using a sensorless control algorithm with a control range of at least 1:10;
- to perform the functions of motor protection.
The controller provides the input and processing of control commands, as well as software configuration via the RS-485 interface, ModBus RTU protocol and by discrete and (or) analog signals.
The degree of protection against external influences provided by the controller housing is IP20 according to Russian State standard GOST 14254. The controller is designed for use in fireproof environments according to Art. 16 FZ of 07.22.2008 N 123-FZ.
Controller legend structure is EC-F-XXX
where EC is serial designation; F is a fan application; XXXX is electric motor power in Watts.
Product purpose
The controller is designed:
- to control the speed of the electric motor;
- to form rotational speed of a synchronous motor using a sensorless control algorithm with a control range of at least 1:10;
- to form the speed of an induction motor according to the law U/f;
- to perform motor protection functions.
Specification
The main technical specification of the controller is given in table 1. It may be specified.
Table 1 – Specification of the controller
| Parameter |
Description |
|---|---|
|
Rated input supply voltage |
3 ~ 50 Hz 380 V with the quality of electricity in accordance with Russian State standard GOST 32144 |
|
Permissible output current (effective value) |
|
|
Protection |
|
|
Number of analog inputs |
0...10 V, isolated – 1 piece |
|
Number of digital inputs |
10 V, insulated, dry contact – 2 pieces |
|
Number of digital outputs |
|
|
Microswitches |
Microswitch unit for 4 positions |
|
LED indication |
|
|
Communications |
RS-485, Modbus-RTU protocol, maximum baud rate 115200 baud |
|
Overall dimensions, no more |
265×185×130 cm |
|
Weight, no more |
4 kg |
|
Degree of housing protection no worse |
IP20 |
Provided operating modes
The controller is able:
- to start and stop, as well as control of the motor speed via a serial communication channel with RS-485 interface;
- to start and stop the motor according to signals from digital inputs;
- to control the motor speed by the signal from the analog input.
The controller provides the ability to connect an external braking resistor to dissipate the energy generated by the electric motor when stopped in dynamic braking mode.
The controller software implements:
- soft starting and stopping of the electric motor, the transient time is set in the range 5 to 100 seconds;
- motor speed control;
- process Proportional-Integral-Differential controller (PID-controller).
Set of delivery
In the set of delivery of the controller are included the following items:
- controller – 1 item;
- certificate – 1 item;
- unit package – 1 item;
- operations manual (on customer’s request).
Optionally supplied with electrical machines manufactured by "Kaluga electromechanical plant" Kaluga, Russia
