TriContinent C24000, Product Manual

Page: 65 / 144

Plunger movements
65
C-Series Product Manual
Set start velocity (v<n>)
The [v] command sets the velocity at which the plunger begins its move-
ment.
Arguments:
After beginning at the start velocity, the plunger ramps up to the top veloc-
ity [V]. The start velocity normally should always be less than the top veloc-
ity. If not, the plunger will decelerate from its start velocity [v] to its top
velocity [V].
Set top velocity (V<n>)
The [V] command sets the top speed in increments/sec.
Arguments:
The top velocity can be changed “on the fly,” that is, while the plunger is
moving, using the [V] command. When the move completes, the speed
value reverts back to its original value. Thus, on-the-fly velocity changes
only affect the current move.
On-the-fly velocity changes are limited to a maximum of 2000. Any
requested changes greater than 2000 will result in an invalid operand error
(error 3).
If the cutoff velocity [c] is higher than the desired top velocity [V], the cut-
off velocity [c] is changed to equal the top velocity [V].
The [c] cutoff velocity does not revert back to its original value when the
top velocity [V] is changed back.
For assistance in selecting the most appropriate top velocity, refer to
"Calculating flow rates" (page 127).
CAUTION:
Due to the smaller internal port diameters of the 6-way
distribution valve, it is recommended that fluid velocity does not exceed
1500
µ
L/sec when using this valve. Use caution when setting velocity with
2.5 mL and larger syringe sizes, to avoid cavitation and excessive syringe
back pressure.
<n> 1...1000 increments/sec, N0 or N1 mode
<n> 1...8000 increments/sec, N2 mode (micro-increments)
{900} power-up default
<n> 1...6000 increments/sec, N0 or N1 mode
<n> 1...48000 increments/sec, N2 mode (micro-increments)
{1400} power-up default, C3000/C3000MP
{5600} power-up default, C24000/C24000MP