Danfoss MCA 122 Modbus TCP, Руководство по эксплуатации, Страница: 24 / 46

Bit 09, Jog 2 OFF/ON
Activation of the pre-programmed speed in
8-91 Bus Jog 2
Speed . JOG 2 is only possible if bit 04="0" and bit
00-03="1".
Bit 10, Data invalid/valid
Is used to tell the frequency converter whether the control
word is to be used or ignored. Bit 10=“0” causes the
control word to be ignored, giving the opportunity to turn
off the control word when updating/reading parameters.
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.
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 choose between the four
parameter set-ups according to
Table 4.5 .
The function is only possible if Multi Set-up has been
chosen in 0-10 Active Set-up . The selection in 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
0-12 This Set-up Linked to .
Set-up Bit 13 Bit 14
1 0 0
2 1 0
3 0 1
4 1 1
Table 4.5 Parameter Set-ups
Bit 15, No function/Reverse
Bit 15=“0” causes no reversing.
Bit 15=“1” causes reversing.
NOTICE
In the factory setting reversing is set to digital in
8-54 Reversing Select .
NOTICE
Bit 15 causes reversing only when Ser. communication,
Logic or or Logic and is selected.
4.3.2 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 Bit=1
00 Control not ready Control ready
01 Drive not ready Drive ready
02 Coasting Enable
03 No error Trip
04 OFF 2 ON 2
05 OFF 3 ON 3
06 Start possible Start not possible
07 No warning Warning
08
Speed
≠
reference
Speed=reference
09 Local operation Bus control
10 Out of frequency limit Frequency limit ok
11 No operation In operation
12 Drive OK Stopped, autostart
13 Voltage OK Voltage exceeded
14 Torque OK Torque exceeded
15 Timer OK Timer exceeded
Table 4.6 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 external 24 V supply of the control
system).
Bit 01, VLT 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.
How to Control MCA 122 Modbus TCP
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