VLT ® 2900 Series Gal/min. (gal/min) [31] Ft 3 /s (ft3/s) [30] FB MIN - 100,000.000 Ft 3 /min. (Ft3/min) [32] 1500.000 Gal/h (gal/h) [33] See description of parameter 414 Minimum feedback, FB MIN . Ft 3 /h (Ft3/h) [34] Lb/s (lb/s) [35] Lb/min. (lb/min) [36] Set the value to be shown on the display when the maximum feedback has been obtained on the selected feedback input (parameter 308/314 Analogue inputs ). Lb/hour (lb/h) [37] Lb ft (lb ft) [38] Ft/s (ft/s) [39] Ft/min. (ft/min) [40] Select among different units to be shown on the dis- play.
The unit is read out if an LCP control unit can be connected, and if Reference [unit] [2] or Feedback [unit] [3] has been selected in one of parameters 009-012 Display read-out , and in Display mode. The unit is used in Closed loop also as a unit for Minimum/ Maximum reference and Minimum/Maximum feed- back. No unit (No unit) [0] % (%) [1] ppm (ppm) [2] rpm (rpm) [3] bar (bar) [4] Cycles/min (CYCLE/MI) [5] Select the required unit for the reference/feedback sig- nal. Programming Pulses/s (PULSE/S) [6] Units/s (UNITS/S) [7] Units/min. (UNITS/MI) [8] Units/h (Units/h) [9] °C (°C) [10] NB!
Parameters 417-421 are only used, if in parameter 100 Configuration the selection made is Speed regulation, closed loop [1]. Pa (pa) [11] l/s (l/s) [12] m 3 /s (m3/s) [13] l/min. (l/m) [14] m 3 /min. (m3/min) [15] l/h (l/h) [16] m 3 /h (m3/h) [17] 0.000 (OFF) - 1.000 0.010 Kg/s (kg/s) [18] Proportional gain indicates how many times the fault (deviation between the feedback signal and the set- point) is to be amplified. Kg/min. (kg/min) [19] Kg/hour (kg/h) [20] Tons/min. (T/min) [21] Tons/hour (T/h) [22] Metres (m) [23] Quick regulation is obtained at high amplification, but if the amplification is too high, the process may be- come unstable in the case of overshooting.
Nm (nm) [24] m/s (m/s) [25] m/min. (m/min) [26] °F (°F) [27] In wg (in wg) [28] gal/s (gal/s) [29] = factory setting, () = display text, [] = value for use in communication via serial communication port MG.29.A3.02 - VLT ® is a registered Danfoss trademark 47 415 Maximum feedback, FBMAX (Max. feedback) Value: Function: Description of choice: Function: 416 Process units (REF/FEEDB. UNIT) Value: Description of choice: 417 Speed PID proportional gain (SPEED PROP GAIN) Value: Function: Description of choice: