Danfoss VLT Refrigeration Drive FC 103 Design Manual page 89

System Integration
Bit 10, Data invalid/valid
Is used to tell the frequency converter whether to use or
ignore the control word.
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 telegram, regardless of which type of telegram is used.
If it should not be used for updating or reading
parameters, it is possible to turn off the control word.
Bit 11, No function/Slow down
Is used to reduce the speed reference value by the amount
given in parameter 3-12 Catch up/slow Down 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 parameter 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 4 parameter
set-ups according to Table 3.46.
The function is only possible if [9] Multi Set-up has been
selected in parameter 0-10 Active Set-up. The selection in
parameter 8-55 Set-up Select determines how bits 13 and
14 are linked with the corresponding function of the
digital inputs. Changing set-up while running is only
possible if the set-ups have been linked in
parameter 0-12 This Set-up Linked to.
Set-up Bit 13
1
2
3
4
Table 3.46 Set-up Selection
Bit 15, No function/reverse
Bit 15=0 causes no reversing.
Bit 15=1 causes reversing.
NOTICE
In the factory settings, reversing is set to [0] Digital input
in parameter 8-54 Reversing Select.
NOTICE
Bit 15 causes reversing only when [1] Bus, [2] Logic AND
or [3] Logic OR is selected in parameter 8-54 Reversing
Select.
MG16G202
Design Guide
Bit 14
0 0
1 0
0 1
1 1
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3.9.12.5 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 slave.
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
08 Speed≠reference
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 3.47 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 frequency converter is
switched off (trip).
When bit 00=1, the frequency converter control is ready,
but there is not necessarily power supply to the unit
present (in the event of 24 V external supply of the control
system).
Bit 01, Drive not ready/ready
Same significance as bit 00, however, there is a supply of
the power unit. The frequency converter 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 frequency
converter is switched off (trip).
When bit 02=1, bit 00, 01, or 02 of the control word is 1;
the frequency converter has not tripped.
Bit 03, No error/Trip
When bit 03=0, no error condition of the frequency
converter exists.
When bit 03=1, the frequency converter has tripped and
requires a reset signal before it can start.
Bit 04, On 2/Off 2
When bit 01 of the control word is 0, then bit 04=0.
When bit 01 of the control word is 1, then bit 04=1.
Bit 05, On 3/Off 3
When bit 02 of the control word is 0, then bit 05=0.
When bit 02 of the control word is 1, then bit 05=1.
Bit=1
Control ready
Drive ready
Enable
Trip
On 2
On 3
Start not possible
Warning
Speed=reference
Bus control
In operation
Stopped, auto start
Voltage exceeded
Torque exceeded
Timer exceeded
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