166
SI-Ethernet User Guide
Issue: 3
Speed reference (
SpeedRef
)
The speed reference word utilises 2 bytes (16 bits) as shown below.
For more information on the setting of the speed reference see section 7-31
7.5.11
Basic speed and torque control
Output assembly object 0x16 (22
10
)
The PLC or scanner must be configured for 6 output bytes (or 3 output words) if this assembly
object is to be used.
Basic control word
The basic control word consists of 2 bytes (16 bits), with only 2 bits of the low byte being used as
shown below.
The individual bit functions are described as follows:
b15
b14
b13
b12
b11
b10
b9
b8
SpeedRef (high byte)
b7
b6
b5
b4
b3
b2
b1
b0
SpeedRef (low byte)
Table 7-12 Basic speed and torque control
Data Word
Function
Word 0
Basic control word.
Word 1
Speed reference (
SpeedRef
).
Word 2
Torque reference (
TorqueRef
).
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
FaultRst
RunFwd
Name
Control
Word
Description
RunFwd
b0
Set this bit to command the drive to run in the forward direction.
FaultRst
b2
A 0 to 1 transition will reset the drive if the drive was in a trip state.
For the drive to run at the speed specified in Word 1, Pr
0.06.043
must be
ON
and bit 0,
bit 7 and bit 8 of the drive control word (Pr
0.06.043
) must all be set to 1.
For information on the drive control word see Table 7-10
NOTE
NOTE
Содержание Unidrive M600
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