VLT ® 2000 Series I 403 Terminal 19 reversing (INPUT 19) Value: ✭ Reversing (REVERSING) [0] Start reversing (LATCH START) [1] No function (NO OPERATION) [2] Speed down (SPEED DOWN) [3] Digital reference select (SPEED SELECT) [4] Reset (RESET) [5] I 404 Terminal 27 stop (INPUT 27) Value: Motor coasting (MTR.COASTnot) [0] Quick stop (Q-STOPnot) [1] DC-brake (DC-BRAKEnot) [2] ✭ Reset and motor coasting (RESET&COASTnot) [3] Stop (STOPnot) [4] Reset and start (RESET&START) [5] Speed up (SPEED UP) [6] Digital reference select (SPEED SELECT) [7] Description of parameters Function: Using this parameter (terminal 19) you can e.g. change the motor’s direction. Function:
Using this parameter (terminal 27) you can give the motor various stop signals. Description: Reversing: Reverses the motor, when 24 V is applied to terminal 19 and changes the rotation direction again when 0 V is applied to the terminal. Description: Motor coasting: If 0 V is applied to terminal 27 the motor will be coasting until standstill. Section 1 Section 2 Section 3 Start reversing: Reverses the motor, when 24 V is applied to terminal 19. The motor stops when 0 V is applied to the termi- nal. Quick stop: If 0 V is applied to terminal 27 the motor will be braking until standstill according to the ramp-down time set in parameter 218.
A DC current brakes the motor after ramping down to 0, according to the setting of parameters 306-308. No function: Locks the input. Speed down: This is used together with parameter 230. It is possible to make the output frequency drop towards f MIN , as long as 24 V is applied to terminal 19. At 0 V applied to terminal 19, the output frequency in question is maintained. See also parameter 402. DC brake: If 0 V is applied to terminal 27 the motor will brake to standstill according to the settings of parameters 306 and 308. Reset and motor coasting: If 0 V is applied to terminal 27 the motor will start coasting and the VLT frequency converter is reset. Digital reference select:
Together with parameter 402 you can choose between four different digital references: Stop = press: A circuit breaker between terminals 12 and 27. When opened briefly this circuit breaker causes ramp-down to stop. 18/27 19 Terminal 0 0 Digital reference 1 1 0 Digital reference 2 0 1 Digital reference 3 1 1 Digital reference 4 Reset and start: This can be used as a start function when you use terminals 18 and 19 to select a digital reference. 24 V applied to terminal 27 will make the frequency converter reset and the motor ramp up to the set reference according to the ramp-up time set in parameter 215. (continued overleaf) Reset:
In case of alarm the VLT frequency converter can be reset by applying 24 V to terminal 19. ✭ = Factory setting. Text in ( ) = Display text. The figures in [ ] are used in bus communication. MG.20.B6.02 – VLT is a registered Danfoss trademark 73