Computer Hardware User Manual

Quattro DC User Switches C1
Parameter Description Default Choices
Hidden
Item
Run
lock
out
EXT TORQ
CMD SRC
(Torque Command Source)
Sets the source of an external torque command,
if any. Selections are:
− NONE: no external torque command used
− SERIAL: supplied via the serial link
− ANALOG: supplied via an analog input
channel
NOTE:
• if SPEED REG TYPE (C1) is set to external
reg and EXT TORQ CMD SRC (C1) is set to
serial or analog, the drive is a torque
controller
• if SPEED REG TYPE (C1) is set for a speed
regulator (either pi speed reg or elev spd reg)
and EX TORQ CMD SRC (C1) is set to either
analog or serial, the torque command will be
used as an auxiliary torque command (torque
feedforward command)
NONE
− none
− serial
− analog input
Y Y
DIR
CONFIRM
(Direction Confirm)
When enabled, the function allows confirmation
of the polarity of the initial analog speed
command via the Run Up or Run Down logic
input commands.
• If the Run Up logic input is selected and true
with the polarity of the analog signal positive,
then the analog speed command is accepted
unchanged.
• If the logic input Run Down logic input is
selected and true with the polarity of the
analog speed command negative, the analog
speed command is accepted unchanged.
• If however, the logic input Run Up is true and
the polarity is negative or the logic input Run
Down is true and the polarity is positive, then
the speed command is held at zero.
DISABLED
− disabled
− enabled
Y Y
WARNING
If using an external torque command
(SPEED REG TYPE (C1) = external reg and
EXT TORQ CMD SRC (C1) = analog input),
it is imperative that the encoder polarity
matches incoming torque command polarity.
To verify polarity, insert a positive torque
command into the analog input. Check
ENCODER FEEDBACK (D1) to verify it is
also a positive value. If not, swap A and /A
or change the ENCODER CONNECT (C1)
parameter.
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