Data Structures; Soft Starter Control I/O Data Structure - Emerson Profibus Guia Del Usuario

5.

Data Structures

5.1

Soft starter control I/O data structure

Master > Slave control word is structured as follows:
Table 5-1 Control I/O data structure
Bit 7 Bit 6
Reserved Reserved
Bit 7 Bit 6
Reserved Reserved
Quick stop bit
When Fwd run bit changes from 1 to 0:
0 = stop action will be a soft stop (as selected on the soft starter).
1 = stop action will be a quick stop (i.e. coast to stop).
The Quick stop bit must be set to 0 before the soft starter can perform a start.
NOTE
Motor set bits (Digistart IS only)
Selects which parameter set to use when starting:
0 = selected from soft starter remote input (programmable input must be set to 'Motor Set Select')
1 = soft starter primary motor set (ensure soft starter programmable input is not set to 'Motor Set Select')
2 = soft starter secondary motor set (ensure soft starter programmable input is not set to 'Motor Set Select')
3 = reserved
If Pr 3A Input A Function is set to motor set select, this will cause a conflict with motor set selection via serial
NOTE
communications.
Slave > Master status word is structured as follows:
Table 5-2 Status word structure
Bit 7 Bit 6
2
Ramping Local
Bit 7 Bit 6
Reserved Reserved
1
Motor current (% FLC) represents current as a percentage of the set motor full load current. A maximum value of 63 represents 200%
full load current. To convert this value to a readable percentage, divide by 0.315. For Digistart IS models IS-1x0076B and smaller this
value will be 10 times greater than the value displayed on the keypad.
2
Only available on Digistart IS soft starters.
Ready is set when the soft starter is ready to start the motor.
On is set when the soft starter is starting, running or soft stopping the motor.
Warning is set when the soft starter detects a warning condition.
Fault is set when the soft starter has tripped.
Ramping is set when the soft starter is starting or soft stopping the motor.
Local is set when the soft starter is set to Local mode.
Profibus Module User Guide
Issue 1
Byte 0
Bit 5 Bit 4
Reserved Quick stop
Byte 1
Bit 5 Bit 4
Reserved Reserved
Byte 0
Bit 5 Bit 4
Byte 1
Bit 5 Bit 4
Reserved Reserved
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Bit 3 Bit 2
Motor set
Bit 3 Bit 2
Reset Reserved
Bit 3 Bit 2
1
Motor current (% FLC)
Bit 3 Bit 2
2
Warning Fault
Bit 1 Bit 0
Reserved Reserved
Bit 1 Bit 0
Reserved Fwd run
Bit 1 Bit 0
Bit 1 Bit 0
On Ready
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