VLT
®
Series 3500
92
★ = ROM default setting. ✔ = Normal Danfoss setup. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
Check-sum: bytes 2 through 19 = 1007, reduced to 07.
Address
Control/status word
Parameter no.
Data value
Check-sum
Response Message from the Drive to the Controller:
Code Cause
00 The parameter number does not exist
01 There is no read/write access to the selected param-
eter
02 A nonexisting index no. has been selected
03 Index reading is used for a parameter that has no indi-
ces
04 The parameter is write-protected (read only). This may
be because the factory set-up has been selected
05 The parameter cannot be changed while the motor is
running
06 The data value lies outside the parameter range
07 Illegal command value (Byte 19)
08 The data value read is > 99999
99 Other fault
Fault Messages for Read/Write Parameters:
Byte 19 in the response message from the drive takes the
value 9 if it is not possible to carry out the selected write or
read command. At the same time, a cause code is given is
bytes 17 and 18. The following cause codes exist:
Switch 04:
04 closed: Terminal 61 is connected to chassis ground.
04 open: Terminal 61 is connected to chassis ground via
an RC link.
When switch 04 is closed, there is no voltage isolation be-
tween the signal lines (terminals 68 and 69) and the
ground. This may lead to noise problems if a controller
which is not isolated from earth ground is used. In this
case, the RS 485 connection should be made as follows:
Switch 04 must be open, the shield of the signal cable must
be connected to the cable clamp below the control card, but
not to terminal 61. The shield should be left on the wire and
should extend as close to the terminal strip as possible.
The shield should be insulated, to avoid contact with other
circuitry.
Function Byte no. ASCII-character Decimal value
Start-byte 1 < 60
2048
3149
Control character 4 U 85
5G71
6H72
7K75
8@64
9048
10 5 53
11 1 49
12 6 54
Sign 13 + 43
14 0 48
15 0 48
16 0 48
17 8 56
18 0 48
Decimal point 19 0 48
20 0 48
21 7 55
Stop-byte 22 > 62
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