Troubleshooting 2-209
[Torque Ref B], parameter 431 is used to supply an external reference for
how much torque is desired. The scaling of this parameter is from –800 to
+800, via [Torq Ref B Hi] and [Torq Ref B Lo].
The Torque Ref B is then multiplied by [Torq Ref B Mul], parameter 434.
This defines the scaled Torque Ref B.
Once the scaling is complete on both Torque Ref A and Torque Ref B, the
output is summed to create the external torque reference
This can be utilized when a master/slave multi-drive system is configured.
The torque reference into the “slave” can be scaled to create the proper
torque output. Keep in mind that the motors may be different ratings and
this function is used to help the “system” share the load.
PowerFlex 700 Firmware 3.001 (& later) Enhancements
Extra selections have been added to [Torque Ref A Sel] and [Torque Ref B
Sel] in firmware version 3.001 (and later) for the PowerFlex 700 Vector
Control drive:
• Scale Block Output available as a selection
• Torque Setpoint 2 is new and available as a selection
Troubleshooting See Faults on page 2-93 and Advanced Tuning on page 2-2.
427
431
[Torque Ref A Sel]
[Torque Ref B Sel]
Selects the source of the external torque
reference to the drive. How this reference
is used is dependent upon [Speed/
Torque Mod].
(1)
See User Manual for DPI port
locations.
(2)
Vector firmware 3.001 and later.
Default:
Options:
1
1
0
1
2
3-17
18-22
23
24
25-28
29
“Torque Setpt”
“Disabled”
“Torque Setpt”
“Torque Stpt1”
(2)
“Analog In 1”
“Analog In 2”
“Reserved”
“DPI Port 1-5”
(1)
“Reserved”
“Disabled”
“Scale Block1-4”
(2)
“Torque Stpt2”
(2)
053
438 [Torque Setpoint2]
Provides an internal fixed value for
Torque Setpoint when [Torque Ref Sel] is
set to “Torque Setpt 2.”
Default:
Min/Max:
Units:
0.0%
–/+800.0%
0.1%
FV
Vector
Vector
FV
Vector v3
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