EPA SM-Ethernet, User Manual

Page: 43 / 133

42
SM-Ethernet User Guide
Issue: 7
6.7.17 Extended speed and torque control
Output assembly object 0x17 (23
10
)
The PLC or scanner must be configured for 6 output bytes (or 3 output words) if this
assembly object is to be used.
Extended control word
The extended control word consists of 2 bytes (16 bits), with only 5 bits of the low byte
used as shown below.
The individual bit functions are described as follows:
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 6.7.26 AC/DC
Drive object on page 62.
Table 6.9 Extended speed and torque control
Data word Function
Word 0 Extended 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
NetRef NetCtrl FaultRst RunRev RunFwd
Name Control Word Description
RunFwd b0
Set this bit to command the drive to run in the forward
direction.
RunRev b1
Set this bit to command the drive to run in the reverse
direction.
FaultRst b2
A 0 to 1 transition will reset the drive if the drive was in a
trip state.
NetCtrl b5
Used in conjunction with Pr 6.43 to enable the drive
control word bits b0-b6 and bit 9 (Pr 6.42 ).
NetRef b6
Set this bit to command the drive to use the remote
speed reference value specified in Word 1.
For the drive to run at the speed specified in Word 1, Pr 6.43 must be ON and bit 0, bit
7 and bit 8 of the drive control word (Pr 6.42 ) must all be set to 1 and the external
hardware enable signal must be present.
For information on the drive control word see Table 6.6 Drive control word bit
functions on page 39.
b15 b14 b13 b12 b11 b10 b9 b8
SpeedRef (high byte)
b7 b6 b5 b4 b3 b2 b1 b0
SpeedRef (low byte)
NOTE
NOTE