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Danfoss VLT 8000 Operating Instructions Manual
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Danfoss VLT 8000 Operating Instructions Manual

Danfoss VLT 8000 Operating Instructions Manual

Modbus rtu
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Operating Instructions
Modbus RTU
®
VLT
2800
®
VLT
6000
®
VLT
8000

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Summary of Contents for Danfoss VLT 8000

  • Page 1 Operating Instructions Modbus RTU ® 2800 ® 6000 ® 8000...
  • Page 2 Introduction ......................About This Manual ....................Assumptions ......................What You Should Already Know ................Modbus RTU Overview ..................VLT 2800, VLT 6000 and VLT 8000 with Modbus RTU ........... Installation and Setup .................. Network Connection ..................... Hardware Setup VLT 2800 ..................
  • Page 3 ® ® 2800, VLT 6000 HVAC and VLT 8000 AQUA Modbus RTU Software Version VLT 2800, VLT 6000 and VLT 8000 VLT 2800 Series Operating instructions Software version: 2.8x These operating instructions can be used for all VLT 2800 Series frequency converters with software version 2.8x.
  • Page 4 8000 AQUA Modbus RTU VLT 8000 AQUA Operating Instructions Software version: 1.5x These Operating Instructions can be used for all VLT 8000 AQUA frequency converters with software version 1.5x. The software version number can be seen from parameter 624 Software version no.
  • Page 5 Using VLT 6002 - 6006, 525-600 V: Wait at least 4 minutes Using VLT 6008 - 6027, 525-600 V: Wait at least 15 minutes Using VLT 6032 - 6275, 525-600 V: Wait at least 30 minutes MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 6 15 minutes VLT 8002-8006, 525-600 V: wait at least 4 minutes VLT 8008-8027, 525-600 V: wait at least 15 minutes VLT 8032-8300, 525-600 V: wait at least 30 minutes MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 7 It describes the process a controller uses to request access to another device, how it will respond to requests from the MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 8 2800, VLT 6000 HVAC and VLT 8000 AQUA Modbus RTU VLT 2800, VLT 6000 and VLT 8000 with Modbus RTU The frequency converter communicates in Modbus RTU format over an EIA-485 (formerly RS-485) network. Modbus RTU allows access to the frequency converter’s Control Word and Bus Reference.
  • Page 9 Every segment must be terminated in both ends, Cable: either with the termination switches (switch 2 & Screened twisted pair (STP) 3) of the VLT 6000 / VLT 8000 or with a biased Impedance: 120 Ohm termination resistor network. Cable length: For bus-cabling always use cable of screened Max.
  • Page 10 RS 485. To terminate with the Hardware Setup VLT 6000 and VLT 8000 A terminator dip switch on the main control board of the frequency converter is used to terminate the Figure 2 Terminator Switch Factory Setting Modbus RTU bus.
  • Page 11 Baud rate is defined as the number of bits transmitted per second. = factory setting. () = display text [] = value for use in communication via serial communication port MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 12 The resulting retransmissions of messages will slow communications on the network. = factory setting. () = display text [] = value for use in communication via serial communication port MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 13 The resulting retransmissions of messages will slow communications on the network. = factory setting. () = display text [] = value for use in communication via serial communication port MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 14 570 Modbus parity and message framing (M.BUS PAR./FRAME) Value: (EVEN/1 STOPBIT) (ODD/1 STOPBIT) (NO PARITY/1 STOPBIT) (NO PARITY/2 STOPBIT) = factory setting. () = display text [] = value for use in communication via serial communication port MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 15 The entire message frame must be transmitted as a continuous stream. If a silent interval of more than 1.5 character times occurs before completion of the frame, the receiving device flushes the incomplete MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 16 CRC field checks the contents of the entire message. It is applied regardless of any parity check method used for the individual characters of the message. The CRC value is calculated by the transmitting device, which MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 17 Hz, a value of 100 must be transferred, since a conversion factor of 0.1 means that the transferred value will be multiplied by 0.1. A value of 100 will, therefore, be understood as 10.0. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 18 04570-04999 Reserved 05000 Parameter 500, Protocol ↓ ↓ 05440 Parameter 544, Pulse Count 05450-05999 Reserved 06000 Parameter 600, Operating Data: Operating Hours ↓ ↓ 06420 Parameter 642, Power Card Identification 06430-65536 Reserved MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 19 Parameter 600, Operating Data: Operating Hours ↓ ↓ 06310 Parameter 631, Nameplate: Communication Option Ordering No. 06320-06999 Reserved 07000 Parameter 700, Relay 6, Output Function ↓ ↓ 07110 Parameter 711, Relay 9, Off Delay 07120-65536 Reserved MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 20 Parameter 600, Operating Data: Operating Hours ↓ ↓ 06310 Parameter 631, Nameplate: Communication Option Ordering No. 06320-06999 Reserved 07000 Parameter 700, Relay 6, Output Function ↓ ↓ 07110 Parameter 711, Relay 9, Off Delay 07120-65536 Reserved MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 21 Bit 03 gates with the corresponding function on a digital input. Bit 00/01: Bit 00/01 is used to select between the two pre-programmed references (parameters 215-218 Preset reference) according to the following table: MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 22 MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 23 The trip can be reset either with 24 V external control back up or after the power is connected again. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 24 (-2000 Hex) of the reference range. The reference value is first converted to 1’ complement, and then 1 is added binarily to obtain 2’ complement: Control Word Bit Descriptions VLT 6000 / VLT 8000 2000 Hex 0010 0000 0000 0000 0000 The control word is used for transmitting commands 1’...
  • Page 25 323 Relay outputs. speed is ramped down to stop via parameter 207 Ramp-down time. Bit 12, Relay 2: Bit 12 = "0": Relay 2 is not activated. Bit 05, Freeze output frequency: MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 26 Bit 04, Not in use: Bit 04 is not used in the status word. Status Word Bit Descriptions VLT 6000 / VLT 8000 The status word is used to inform the master Bit 05, Not in use: (e.g.
  • Page 27 Bit 15 = "1" means that the temperature limit has been exceeded either in the motor, in the frequency converter or from a thermistor connected to an analogue input. Serial communication reference MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 28 = Par. 202 Output 50 Hz frequency high limit = Status word = 0F03 Hex. Status message Output frequency = 2000 Hex. 50 % of the frequency range, corresponding to 25 Hz. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 29 Data (Coils 48-41) Error Check (CRC) Forces each coil (0X reference) in a sequence of coils to either ON or OFF. When broadcast, the function forces the same coil references in all attached slaves. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 30 Registers 1-4 are addressed as 0-3. zero. Register 1 is addressed as 0. See example 4 Write Parameter 104, Motor Frequency. See example 4 Write Parameter 104, Motor Frequency. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 31 Write Data LO (Register 4:1049) Write Data HI (Register 4:1050) Write Data LO (Register 4:1050) Error Check (CRC) Response The normal response returns the slave address, function code, starting address, and quantity of registers preset. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 32 There is no bus access to the parameter called Data Change is not possible because factory setup is selected Modbus RTU Errors Modbus Code Meaning (decimal) Invalid Data Address Invalid Message Length Invalid Data Length or Value Invalid Function Code MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 33 Byte Count Force Date HI Address Coils (0-7) Byte 8 Byte 9 Byte 10 Byte 11+12 Force Data Force Data HI Force Data Error Check Coils (16-23) Coils (8-15) Coils (24-31) [89] [19] MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 34 Byte 5 Byte 6 + 7 Slave Function Coil Addr HI Coil Addr LO No. of Coils HI No. of Coils LO Error Check Address [54] [13] All values are in hexadecimal. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 35 No. of Points HI No. of Points Error Check Address Parameter 514 (5139) = 1413 Note that the starting address of a register is the parameter number x 10 - 1 in HEX. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 36 Error Check Address Note that the starting address of a register is the parameter number x 10 -1 in HEX. Byte 3+byte 4: 0190 = 400 = 40% All values are in hexadecimal. MG.10.S2.02 - VLT is a registered Danfoss trademark...
  • Page 37 175R0998 MG10S202 *MG10S202* Rev. 2005-03-08...

This manual is also suitable for:

Vlt 6000Vlt 2800 seriesVlt 6002Vlt 6005Vlt 6006Vlt 6062 ... Show all