Danfoss MCO 305 Operating Instructions Manual

Also see for MCO 305: Design guide Operating instructions Design guide

33-1* Synchronization Default33-10 Sync Factor Master 133-11 Sync Factor Slave 133-15 Marker Number for Master 133-16 Marker Number for Slave 133-17 Master Marker Distance 409633-18 Slave Marker Distance 409633-19 Master Marker Type [0] Enc. Z pos.33-20 Slave Marker Type [0] Enc. Z pos.• 33-17 Master Marker Distance• 33-18 Slave Marker DistanceWhen using the encoder zero pulse as marker signal thedistance between 2 markers is the resolution (qc) of theencoder.When external marker signals are used, the markerdistance can be measured by means of the programsample “Marker count”.• 33-19 Master Marker Type• 33-20 Slave Marker TypeMaster marker signal: Input 5Slave marker signal: Input 6Marker signal type must be selected for master and slave:Default setting is [0] Encoder Z positive flank for both.3.5 Connecting and Testing the Encoder(s)NOTEThe controller and the motor must be able to be switchedoff at any time with an EMERGENCY STOP button.The motor must be able to turn completely freely so that asudden jolt can not cause damage.NOTEIf not yet connected, now is the time to connect and testthe encoder. When using an absolute encoder, enter [0] in32-00 Incremental Signal Type and in 32-02 Absolute Protocolthe used type of encoder. Then enter the resolution in32-03 Absolute Resolution.WARNINGTurn off the power before connecting the encoder.Each encoder channel (A, B, Z, and D) is monitored, opencircuit as well as short circuit is detected. A green LEDshows the status of each active channel, LED on meansthat the channel is ok. Monitoring if the channels areautomatically enabled/disabled depending on the selectedencoder type, e.g. A, B, and Z is monitored when anincremental encoder is selected. Additionally an alarm willbe triggered if encoder monitoring is activated in32-09 Encoder Monitoring and 32-39 Encoder Monitoring.Check the encoder connections by means of the testprogram: Select the file “Enc-S.m” via the MCT 10. APOSSand with that the file is opened automatically .3.5.1 Execute the Encoder Test ProgramIn the Development menu click on→ Execute to start thetest program. Run the frequency converter forward forexample in hand mode – [Hand on] key – then theposition must count positive. If the position is countingnegative, swap A and B channels from the encoder or twomotor phases. If the motor is turned on by hand (themotor should not be connected!), test whether theencoder functions: the position is continuously registeredin the communications window. For a full rotation youshould receive 4 times the value of the resolution of theencoder, that means 2000 if the Encoder Counts perRevolution is 500.3.5.2 Checking Master Encoder forSynchronizing ApplicationsTo check the master encoder change the test program:replace the command APOS by MAPOS in “Enc-S.m” andrun the master forward then the master position mustcount positive as well. If the position is counting negative,swap A and B channels from the master encoder.3.5.3 Ending the Encoder CheckEnd the test of the encoder with the [Esc]-key and closethe test program with File Close. A successful test of theencoder is a requirement for further starting up ofoperations. Repeat the test when using other encoders.What to do, if … ?....the encoder does not work?This could be a result of incorrect cable installation.Measure the signals coming from the encoder andcompare them to the values listed in the specifications.Check whether the connection was made according to thespecification.....the count is descending?If the Count is Descending with an incremental encoder,exchange the feedback encoder track A by B and A/ by B/.If there is no counting in the display then check the wiringof the encoder.3.6 PID Controller SettingsThis is a quick guide to set-up the PID controller, furtherdetails can be found in the chapter “Optimizing the PIDcontroller”.How to Install MCO 305 Operating Instructions16 MG.33.K3.02 - VLT® is a registered Danfoss trademark33