HID312 Series High Performance Variable Frequency Drive for Water Supply System
Frequency range: 5.5kw-315kw/380v/660v
Product Introduction
HID312 series VFD is a kind of constant pressure variable frequency drive which combine frequency changing system and intelligent water supply system and which is specialized in water supply system. It includes normal live water supply system and fire fighting water supply system and could achieve the controlling of as many as 4 sets of motors through the setting up of various functions like frequency variability, power frequency, sleeping of each VFD.
Application Field
1. Water supply system for living buildings
2. Water supply system for firefighting emergency
3. Constant pressure oil supply system
Function Features
1. Real Time Clock Function
The VFD is equipped with real-time clock function that could meet 7 different period of free constant pressure water supply system in a day. The controlling pumps could get into sleep or wake up automatically, which could meet the purpose of supplying water in constant pressure and saving water as well.
2. Convenient Maintenance
The pumps could record and deal with faults automatically and the faulty pump would quit the working mode by themselves without affect other pumps, which is quite convenient for the maintenance.
3. Easy to Operate
Manual soft start system and fire fighting inspection functions make sure that the clients could check the working states of pumps at any time. Mutual shift between normal water supply mode and fire fighting water supply mode could be supported.
4. All-round Protection
The rated current of as many as 7 motors could be set and the problems of over-current, over-voltage, down-voltage of the pumps could be protected as well.
5. Sleep Mode Controlling System
Sleep mode and working mode of VFD could be carried out automatically.
6. Sewage Pumps Controlling System
Alarm about over pressure and under pressure of water and sewage pumps controlling system could be supported to ensure a safe use of water.
7. Automatic and Regular Switch of Working Pumps
Various pumps rotate in a regular period, which could prevent pump's rusting or working too long, increasing service life of equipment.
8. Flexible Control of VFD
Logical control of flexibly adding and decreasing numbers of pump and PID control algorithm ensure a smooth switch among the pumps and a stable water pressure.
9. Control of water level of inlet water-pool
There are two types of control method of water level of inlet water pool: analog quantity input and switch quantity input. And the water supply pressure could be chose automatically and properly according to the water level of inlet water pool.
In the following chart:
A stands for normal pressure given
B stands for spare pressure given
C stands for zero pressure given
50% means the upper limit of water level
40% means lower limit of water level
30% means lack of water
Technical Parameters
Items | Specification | |
Control Performance | Frequency control range | 0~600Hz |
Output precision | 0.01Hz | |
Frequency resolution preset | Digital set: 0.01Hz Analog set: AD Conversion precision for 1‰ | |
Control method | Open loop V/F control, Open loop vector control | |
Torque boost | Manual torque adjustable; auto full frequency torque boost | |
Start torque | 1Hz-150% rated torque | |
Over load capacity | G:150% rated current 60s;180% rated current 1s | |
P:120%rated current 60s;150%rated current 1s | ||
Function Description | Acceleration-deceleration curve | Straight line or S line acceleration-deceleration; four kinds of acceleration-deceleration time; 0.1~3200.0s constant adjustment |
Point start function | Point start frequency: 0.00~50.00hz; point start acceleration-deceleration: 0.1~3200.0s constant adjustment | |
Standard function | Multi-point V/F wave; manual toque boost, jump frequency; carrier frequency auto adjustment; DC brake; DC stop; self start after voltage recover; auto fault reset; simple one with two water-supplying; 16 digital speed running; simple PLC operation; swing frequency for textile; close loop PID adjustment control | |
Control features | Auto torque boost; auto speed difference compensation; auto stable output voltage; speed track start; acceleration over current hold-up; constant speed over current frequency reduction; deceleration over voltage hold-up; auto energy saving operation | |
Operation order channel | 3 control modes: keypad control, terminal control, series communication control | |
Frequency source option | Digital set, analog voltage set, analog current set, series communication set, available to switch | |
Input terminal | 6 digital input terminals, extendable to 10 loops, 40 custom function, compatible with PNP or NPN input; one of them can do high frequency pulse input (0~50kHz); 2 analog input terminals, receive voltage signal 0-10V or current signal 0-20mA; extendable to 3 loops. 0.4~1.5kW without expansion interface | |
Output terminal | 2 open-collector output, 22 custom functions; extendable to 3 loops 2 relay output, 22 custom function; extendable to 3 loops 2 analog output, 13 custom function; can output voltage signal 0-10V or current signal 0-20mA 1 high frequency pulse output (0 ~ 50kHz), 13 custom functions 0.4~1.5kW without expansion interface | |
Protection function | Over voltage protection; under voltage protection; over current protection; modular protection; radiator over temperature protection; motor over load protection; external fault protection; input power abnormal; output phase loss ;EEPROM abnormal; relay abnormal | |
Operation ambient | Protection level | IP20 |
Installation Place | Well installed in cabinet, no dust, no corrosive gas, no flammable gas, no oil fog, no steam, no drop water, no direct sun light | |
Ambient temperature | -10°C~+40°C(derating use if ambient temperature higher than 40 degree, maximum is 50 degree. 1% derating every 1 degree higher than 40 degree. | |
Altitude | 0~2000 m, derating use above 1000 m, rated output current reduce 1% every 100 m higher | |
Relative humidity | 20%~90%RH( no condensation) | |
Vibration | <5.8m/s^2(0.6g) | |
Stock temperature | -25°C~+65°C | |
