VLT ® 2000 Series I I 101 Speed control (SPEED CONTROL) Value: Open loop (OPEN LOOP) [0] ✭ Slip comp. (SLIP COMP) [1] Closed loop (CLOSED LOOP) [2] 103 Motor power (MOTOR POWER) Value: Under size [0] ✭ Nom. size [1] Over size [2] Description of parameters Function: You can choose among three different kinds of speed control: Open loop , Slip compensated and Closed loop . Function: Using this parameter you can select the kW value closest to the motor’s rated output. The frequency converter has three preset kW values. The exact kW value will depend on unit type. Description: Choose Slip compensation for normal operation, where the speed must be constant no matter what the load is.
Choose Open loop when the motors used are paral- lel-connected in parallel or when synchronous motors are used. Choose Closed loop when you want operation with process feedback. For closed loop operation you must choose the feedback type in parameter 114 (current, voltage or pulses). See also the section on PI controller, page 53. Description: Read the rated motor power on the type plate of the motor and choose the relevant factory setting for the motor size. Parameters 107, 108, 109, 110, 111 and 112 change automatically when the value in parame- ter 103 is changed. Section 1 Section 2 Section 3 I 104 Motor voltage (MOTOR VOLTAGE) Value:
Only 200-240 V units 200 V (200 V) [0] 208 V (208 V) [1] ✭ 220 V (220 V) [2] 230 V (230 V) [3] 240 V (240 V) [4] I 102 Current limit control ( CURRENT LIMIT) Value: ✭ Preprogrammed value (PROGRAM SET) [0] Voltage signal (10 VDC SIGNAL) [1] Current signal (20 mA SIGNAL) [2] Function: You can choose to control the speed by means of the current limit. This makes indirect torque control possible. The current limit can be set in parameter 209 or by means of a current or voltage signal in parameter 412 or 413. Only 380-460 V units 380 V (380 V) [0] ✭ 400 V (400 V) [1] 415 V (415 V) [2] 440 V (440 V) [3] 460 V (460 V) [4] Function:
Using this parameter you can select the rated voltage closest to the motor’s voltage. Description: Choose between controlling the current limit via para- meter 209 or one of the analogue inputs, terminal 53 or 60. 10 V / 20 mA corresponds to 160 % current (2030: 140 %). Do not select the same signal for PI control. Description: You can choose among different voltage values. The value is selected on the basis of the data on the mo- tor plate. Parameters 107, 108, 109, 110 and 111 are changed automatically when the value of parameter 104 is changed. ✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication.
MG.20.B6.02 – VLT is a registered Danfoss trademark 63