V/F Control V/F curve (voltage frequency characteristic) The reference frequency can be set arbitrarily between 5 and 600Hz, the multi-point V/F curve can be set arbitrarily, and various fixed curves such as constant torque, low reduction torque ...
V/F Control V/F curve (voltage frequency characteristic) The reference frequency can be set arbitrarily between 5 and 600Hz, the multi-point V/F curve can be set arbitrarily, and various fixed curves such as constant torque, low reduction torque 1, low reduction torque 2, and square...
The fan airflow station measures the airflow using measured fan speed, fan head, and fan curve. The fan speed can be measured by a tachometer, and the fan head can be measured by a differential pressure transducer. In a typical building automation system, the controller knows the desired ...
Radial, airfoil, forward/backward curve. All types supported. SPECIALIST/HYBRIDS High volume, pressure & temperature. Mixed flow. Low sound, high efficiency applications. Specialist environments (hostile/clean) DRIVES FIXED/VARIABLE SPEED Fixed/variable speed. Direct drive AC Induction/VFD & EC Motors...
Most fans have an operating region in which their fan performance curve slopes in the same direction as the system resistance curve. A fan operating in this region can have unstable operation. (See Figure 1-1.) Instability results from the fan's interaction with the system; the fan attempts...
VFD Control:Stratus-II Not all AC motors are TRIAC controllable. In many of these cases, an inverter duty motor can be successfully controlled with a Variable Frequency Drive (VFD). VFDs tend to be more energy efficient than TRIAC controls at lower speeds and can be run at lower speeds. ...
V/F curve V/FFour modes : Line , Multi-point , Square V/F curve, V/F separation Jog controlJog frequency range:0.00Hz to F0-10(Max frequency) Accelerate/Decelerate curveLine or S-curve Acc/Dec mode, four kinds of Acc/Dec time Range ...
In fact, in glass tempering, a series of two fans can help supply the necessary pressure and flow without maxing out the fan performance curve. However, there are many options depending on your specific performance requirements. Fan Designs Used in Tempering Applications Backward Curved (BCHS) ...
V/F curve Linear V/F, Multi-point V/F, and Square V/F Speed-up and Straight line or S curve speed-up and speed-down Speed-down curve mode;Two kinds of speed-up and speed-down time;Speed-up and speed-down time ranges between ...
V / F control V / F curve (voltage frequency characteristics) Reference frequency 5 ~ 600HZ arbitrarily set, multi-point V / F curve arbitrarily set, but also choose constant torque, low torque reduction 1, low torque reduction 2, square torque and other fixed curve Torque boost Manual se...