Danfoss VLT HVAC Drive FC 100 Series, Руководство по конструкции

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Field Name Example (HEX)
Slave Address 01
Function 10
Starting Address HI 04
Starting Address LO 19
No. of Registers HI 00
No. of registers LO 02
Byte Count 04
Write Data HI
(Register 4: 1049) 00
Write Data LO
(Register 4: 1049) 00
Write Data HI
(Register 4: 1050) 02
Write Data LO
(Register 4: 1050) E2
Error Check (CRC) -
Table 7.31
Response
The normal response returns the slave address, function
code, starting address and quantity of preset registers.
Field Name Example (HEX)
Slave Address 01
Function 10
Starting Address HI 04
Starting Address LO 19
No. of Registers HI 00
No. of registers LO 02
Error Check (CRC) -
Table 7.32
7.11 Danfoss FC Control Profile
7.11.1 Control Word According to FC
Profile ( 8-10 Control Profile = FC
profile)
Speed ref. CTW
Master-slave
130BA274.10
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
no.:
Figure 7.16
Bit Bit value = 0 Bit value = 1
00 Reference value external selection lsb
01 Reference value external selection msb
02 DC brake Ramp
03 Coasting No coasting
04 Quick stop Ramp
05 Hold output
frequency use ramp
06 Ramp stop Start
07 No function Reset
08 No function Jog
09 Ramp 1 Ramp 2
10 Data invalid Data valid
11 No function Relay 01 active
12 No function Relay 02 active
13 Parameter set-up selection lsb
14 Parameter set-up selection msb
15 No function Reverse
Table 7.33
Explanation of the Control Bits
Bits 00/01
Bits 00 and 01 are used to choose between the four
reference values, which are pre-programmed in
3-10 Preset
Reference according to the following table:
Programmed ref.
value Parameter Bit 01 Bit 00
1 3-10 Preset
Reference
[0]
0 0
2 3-10 Preset
Reference
[1]
0 1
3 3-10 Preset
Reference
[2]
1 0
4 3-10 Preset
Reference
[3]
1 1
Table 7.34
NOTE!
Make a selection in 8-56 Preset Reference Select to define
how Bit 00/01 gates with the corresponding function on
the digital inputs.
Bit 02, DC brake:
Bit 02 = ’0’ leads to DC braking and stop. Set braking
current and duration in
2-01 DC Brake Current and 2-02 DC
Braking Time . Bit 02 = ’1’ leads to ramping.
RS-485 Installation and Set...
VLT
®
HVAC Drive Design Guide
MG11BB22 - VLT
®
is a registered Danfoss trademark 7-19
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