Danfoss VLT Compact Starter MCD 201 Installation Manual

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Danfoss VLT Compact Starter MCD 201 Installation Manual Manual pdf 15 page image

7 Packet Structures7.1 Ensuring Safe and Successful ControlData written to the EtherNet/IP Module remains in itsregister until the data is overwritten or the module isreinitialized. The EtherNet/IP Module does not transfersuccessive duplicate commands to the soft starter.• If the soft starter is started via fieldbus communi-cation but stopped via the LCP or a remote input,an identical start command cannot be used torestart the soft starter.• If the soft starter is controlled via the LCP or theremote inputs (and via fieldbus communications),a control command should be immediatelyfollowed by a status query to confirm that thecommand has been actioned.NOTICEFunctions available only in VLT® Soft Starter MCD 500:• Parameter management• Dual motor control• Digital inputs• Jog• Current measurement in amperes• Power information• WarningsNOTICEVLT® Compact Starter MCD 201 open-loop soft startersdo not support motor current and motor temperatureinformation.7.2 Cyclic OperationThis section lists requirements related to cyclic services forthe EtherNet/IP Module. The EtherNet/IP Module uses bothimplicit (I/O) and explicit messaging, with a cyclic trigger(minimum cyclic interval = 1 ms).7.2.1 Assembly ObjectsThe EtherNet/IP Module supports the assembly objectslisted in Table 7.1.Assembly instances Description Maximum size Type104 Originator⇒target 2 (4) bytes Integer154 Target⇒originator 6 (12) bytes IntegerTable 7.1 Assembly Objects7.2.2 Control Commands7.2.2.1 Receiving Control Data from theControllerThe EtherNet/IP Module uses output assembly instance104d in assembly class 0x04 to receive control data fromthe controller. This instance is the only valid assemblyinstance.Byte Function1) Details0 Control word See chapter 7.2.2.2 Control Word (Write-only)for details.12 Reserved Must be 0.3Table 7.2 Valid Assembly Instance1) All fields are in little-endian format.7.2.2.2 Control Word (Write-only)Use the structure in Table 7.3 to send a control commandto the soft starter.Byte Bit Function00–5 Reserved Must be 0.6 Run 0 = Stop command1 = Start command7 Reset Changing this bit from 0 to 1 resets atrip.10–4 Reserved Must be 0.5 Motor setselect0 = Use primary motor set whenstarting1)1 = Use secondary motor set whenstarting1)6–7 Reserved Must be 0.Table 7.3 Control Word Structure1) Ensure that the programmable input is not set to motor set selectbefore using this function.Packet Structures Installation GuideMG17Q102 Danfoss A/S © 05/2017 All rights reserved. 137 7