Danfoss VLT 6002-6011 Installation, Operation And Maintenance Manual

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Danfoss VLT 6002-6011 Installation, Operation And Maintenance Manual Manual pdf 51 page image

51Analog InputsTwo analog inputs for voltage signals, terminals 53 and 54, and ananalog input for current, terminal 60, are provided for reference andfeedback signals. A thermistor can be connected to the voltage inputs,terminals 53 or 54.The two analog voltage inputs can be scaled over the range of0 to 10 V DC. The current input can be scaled over the range of 0to 20 mA.The table below shows the possible analog input programming.Parameter 317, Time Out, and Parameter 318, Function After TimeOut, allow activation of a time-out function on all analog inputs. If thesignal value of the reference or feedback signal connected to one of theanalog input terminals drops below 50% of the minimum scaling, thefunction set in parameter 318, Function After Time Out, will beactivated after the time-out set in parameter 317.✭ Indicates default parameter. Depending upon the application, the drive may be delivered with other parameters selected.Analog Inputs Terminal Number 53 (Voltage) 54 (Voltage) 60 (Current)Parameter 308 311 314Value:No operation (NO OPERATION) [0] [0] [0]Reference (REFERENCE [1] [1] [1]Feedback (FEEDBACK) [2] [2] [2]Thermistor (THERMISTOR) [3] [3]308 Terminal 53, Analog Input Voltage(A1 [V] 53 FUNCT.)Function:This parameter is used to select the required function to be linked toterminal 53.Description of choice:No operation. Selected if the drive is not to react to signals connectedto the terminal.Reference. Selected to enable change of reference by means of ananalog reference signal. If reference signals are connected to severalinputs, these reference signals will be summed.Feedback. If a feedback signal is connected, a voltage input may beconnected to either terminal 53 or 54, or a current input conected toterminal 60. If a two zone PID control is used, the feedback signals mustbe voltage inputs and applied to terminals 53 and 54. See FeedbackHandling.Thermistor. Selected if a thermistor in the motor stops the drive in caseof motor overtemperature. The cutout value is 3 kohm. A Klixon thermalswitch may also be connected to this input. If parallel sensors are used,the thermistors/thermal switches can be connected in series. The drivewill shut down when the total resistance exceeds 3 kohms.Parameter 117, Motor Thermal Protection, must be programmed forThermal Warning or Thermistor Trip, and the thermistor must beinserted between terminal 53 or 54, analog voltage input, and terminal50, 10 V supply.