Danfoss MCA 121 Operating Instructions Manual

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Danfoss MCA 121 Operating Instructions Manual Manual pdf 24 page image

5.2.2 Status Word according to FC Profile(STW)→Illustration 5.2 (8-10 Control Word Profile)Bit Bit value = 0 Bit value = 100 Control not ready Control ready01 Drive not ready Drive ready02 Coasting Enable03 No error Trip04 No error Error (no trip)05 Reserved -06 No error Trip lock07 No warning Warning08 Speed ≠ reference Speed = reference09 Local operation Bus control10 Out of frequency limit Frequency limit ok11 No operation In operation12 Drive ok Stopped, auto start13 Voltage ok Voltage exceeded14 Torque ok Torque exceeded15 Thermal ok Thermal exceededExplanation of the Status BitsBit 00, Control ready:Bit 00 = ‘0’ means that the frequency converter hastripped. Bit 00 = ‘1’ means that the frequency convertercontrols are ready, but that the power component is notnecessarily receiving any power supply (in the event ofexternal 24V supply to controls).Bit 01, Drive ready:Bit 01 = ‘1’. The frequency converter is ready for operation.Bit 02, Coasting stop:Bit 02 = ‘0’. The frequency converter has released themotor. Bit 02 = ‘1’. The frequency converter can start themotor when a start command is given.Bit 03, No error/Trip:Bit 03 = ‘0’ means that the frequency converter is not infault mode. Bit 03 = ‘1’ means that the frequencyconverter is tripped, and that a reset signal is required tore-establish operation.Bit 04, No error/Error (no trip):Bit 04 = ‘0’ means that the frequency converter is not infault mode. Bit 04 = ‘1’ means that there is a frequencyconverter error but no trip.Bit 05, Reserved:Bit 05 is not used in the status word.Bit 06, No error / Trip lock:Bit 06 = ‘0’ means that the frequency converter is not infault mode. Bit 06 = ‘1’ means that the frequencyconverter is tripped, and locked.Bit 07, No warning/Warning:Bit 07 = ‘0’ means that there are no warnings. Bit 07 = ‘1’means that a warning has occurred.Bit 08, Speed≠ reference/Speed = reference:Bit 08 = ‘0’ means that the motor is running, but that thepresent speed is different from the preset speed reference.For example, this might occur while the speed is beingramped up/down during start/stop. Bit 08 = ‘1’ means thatthe present motor speed matches the preset speedreference.Bit 09, Local operation/Bus control:Bit 09 = ‘0’ means that [STOP/RESET] is activated on thecontrol unit, or that Local control in 3-13 Reference Site isselected. It is not possible to control the frequencyconverter via serial communication. Bit 09 = ‘1’ means thatit is possible to control the frequency converter via thefieldbus/ serial communication.Bit 10, Out of frequency limit:Bit 10 = ‘0’, if the output frequency has reached the valuein 4-11 Motor Speed Low Limit [RPM] or 4-13 Motor SpeedHigh Limit [RPM]. Bit 10 = ‘1’ means that the outputfrequency is within the defined limits.Bit 11, No operation/In operation:Bit 11 = ‘0’ means that the motor is not running. Bit 11 =‘1’ means that the frequency converter has a start signal orthat the output frequency is greater than 0 Hz.Bit 12, Drive OK/Stopped, auto start:Bit 12 = ‘0’ means that there is no temporary overtemperature on the inverter. Bit 12 = ‘1’ means that theinverter has stopped because of over temperature, butthat the unit has not tripped and will resume operationonce the over temperature stops.Bit 13, Voltage OK/Voltage exceeded:Bit 13 = ‘0’ means that there are no voltage warnings. Bit13 = ‘1’ means that the DC voltage in the frequencyconverter’s intermediate circuit is too low or too high.Bit 14, Torque OK/Torque limit exceeded:Bit 14 = ‘0’ means that the motor current is lower than thetorque limit selected in par. 4-16 and 4-17 Torque limit. Bit14 = ‘1’ means that the torque limit in par. 4-16 and 4-17Torque limit has been exceeded. The nominal torque canbe read in 16-16 Torque [Nm].Bit 15, Thermal OK/limit exceeded:Bit 15 = ‘0’ means that the timers for both motor thermalprotection and frequency converter thermal protection,have not exceeded 100%. Bit 15 = ‘1’ means that one ofthe limits has exceeded 100%.How to Control MCA 121 EtherNet/IPMG.90.J3.02 - VLT® is a registered Danfoss trademark 235 5