Bit 09, Selection of ramp 1/2
Bit 09=‘0’ means that ramp 1 is active (3-40 Ramp 1 Type to
3-47 Ramp 1 S-ramp Ratio at Decel. Start). Bit 09=‘1’ means
that ramp 2 (3-50 Ramp 2 Type to 3-57 Ramp 2 S-ramp Ratio
at Decel. Start) is active.
Bit 10, Data not valid/Data 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, Relay 01
Bit 11=‘0’ Relay not activated. Bit 11 = ‘1’ Relay 01
activated, provided Control word bit 11 has been chosen in
5-40 Function Relay.
Bit 12, Relay 02
Bit 12=‘0’ Relay 02 has not been activated.
Bit 12=‘1’ Relay 02 has been activated, provided Control
word bit 12 has been chosen in 5-40 Function Relay.
Bit 13/14, Selection of set-up
Bits 13 and 14 are used to select one of 4 menu set-ups
according to Table 4.9:
Set-up
Bit 14 Bit 13
1 0 0
2 0 1
3 1 0
4 1 1
Table 4.9 Menu Set-ups
The function is only possible when Multi-Set-ups is selected
in 0-10 Active Set-up.
NOTICE
In 8-55 Set-up Select a selection is made to define how Bit
13/14 gates with the corresponding function on the digital
inputs.
Bit 15 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. Bit 15 causes reversing only when Ser.
communication, Logic AND or Logic OR is selected.
4.4.1 Status Word according to Frequency
Converter Profile (STW)
Illustration 4.3 8-10 Control Word Profile
Bit Bit value=0 Bit value=1
00 Control not ready Control ready
01 Drive not ready Drive ready
02 Coasting Enable
03 No error Trip
04 No error Error (no trip)
05 Reserved -
06 No error Trip lock
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, auto start
13 Voltage ok Voltage exceeded
14 Torque ok Torque exceeded
15 Thermal ok Thermal exceeded
Table 4.10 Staus Word Bits
Explanation of the status bits
Bit 00, Control ready
Bit 00=‘0’ means that the frequency converter has tripped.
Bit 00=‘1’ means that the frequency converter controls are
ready, but that the power component is not necessarily
receiving any power supply (in the event of external 24 V
supply to controls).
Bit 01, Drive ready
Bit 01=‘1’. The frequency converter is ready for operation.
Bit 02, Coasting stop
Bit 02=‘0’. The frequency converter has released the motor.
Bit 02=‘1’. The frequency converter can start the motor
when a start command is given.
Bit 03, No error/Trip
Bit 03=‘0’ means that the frequency converter is not in
fault mode.
Bit 03=‘1’ means that the frequency converter is tripped,
and that a reset signal is required to re-establish operation.
Bit 04, No error/Error (no trip)
Bit 04=‘0’ means that the frequency converter is not in
fault mode.
How to Control MCA 122 Modbus TCP
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