Danfoss VLT AutomationDrive FC 301 Series Design Manual page 208

RS-485 Installation and Set...
Bit 10, Data invalid/valid
Is used to tell the adjustable frequency drive whether the
control word is to be used or ignored.
Bit 10="0" causes the control word to be ignored,
Bit 10="1" causes the control word to be used. This
function is relevant because the control word is always
contained in the message regardless of which type of
message is used, that is, it is possible to turn off the
control word if it should not be used for updating or
reading parameters.
Bit 11, No function/Slow-down
Is used to reduce the speed reference value by the amount
given in 3-12 Catch up/slow-down Value value. When bit
11="0", no modification of the reference value occurs.
When bit 11="1", the reference value is reduced.
Bit 12, No function/Catch up
Is used to increase the speed reference value by the
amount given in 3-12 Catch up/slow-down Value.
When bit 12="0", no modification of the reference value
occurs.
When bit 12="1", the reference value is increased.
If both slowing down and accelerating are activated (bit 11
and 12="1"), slowing down has priority, that is, the speed
reference value is reduced.
Bits 13/14, Set-up selection
Bits 13 and 14 are used to select between the four
parameter set-ups according to Table 12.25:
The function is only possible if [9] Multi Set-up has been
selected in 0-10 Active Set-up. The selection in 8-55 Set-up
Select determines how bits 13 and 14 are linked with the
12 12
corresponding function of the digital inputs. Changing set-
up while running is only possible if the set-ups have been
linked in 0-12 This Set-up Linked to.
Set-up
1
2
3
4
Table 12.25 Set-up Selection
Bit 15, No function/Reverse
Bit 15="0" causes no reversing.
Bit 15="1" causes reversing.
Note: In the factory setting, reversing is set to digital in
8-54 Reverse Select.
NOTICE!
Bit 15 causes reversing only when Ser. communication,
Logic or or Logic and is selected.
206
Design Guide
Bit 13 Bit 14
0 0
1 0
0 1
1 1
Rev. 2014-04-04 All rights reserved.
12.13.5 Status Word according to
PROFIdrive Profile (STW)
The status word is used to notify a master (for example, a
PC) about the status of a follower.
Bit Bit=0
00 Control not ready
01 Drive not ready
02 Coasting
03 No error
04 OFF 2
05 OFF 3
06 Start possible
07 No warning
Speed ≠ reference
08
09 Local operation
10 Out of frequency limit Frequency limit ok
11 No operation
12 Drive OK
13 Voltage OK
14 Torque OK
15 Timer OK
Table 12.26 Status Word Bits
Explanation of the status bits
Bit 00, Control not ready/ready
When bit 00="0", bit 00, 01 or 02 of the Control word is "0"
(OFF 1, OFF 2 or OFF 3) - or the adjustable frequency drive
is switched off (trip).
When bit 00="1", the adjustable frequency drive control is
ready, but there is not necessarily power supply to the unit
present (in the event of external 24 V supply of the control
system).
Bit 01, VLT not ready/ready
Same significance as bit 00, however, there is a supply
from the power unit. The adjustable frequency drive is
ready when it receives the necessary start signals.
Bit 02, Coasting/Enable
When bit 02="0", bit 00, 01 or 02 of the control word is "0"
(OFF 1, OFF 2 or OFF 3 or coasting) - or the adjustable
frequency drive is switched off (trip).
When bit 02="1", bit 00, 01 or 02 of the control word is
"1"; the adjustable frequency drive has not tripped.
Bit=1
Control ready
Drive ready
Enable
Trip
ON 2
ON 3
Start not possible
Warning
Speed=reference
Bus control
In operation
Stopped, autostart
Voltage exceeded
Torque exceeded
Timer exceeded
MG33BF22