TriContinent C24000, Product Manual

Page: 44 / 144

Initializing pumps
44
Operating instructions
Specify syringe gap volume (k<n>)
The [k] command sets a gap between the plunger and syringe seal. During
initializations, the plunger moves upward until it contacts the top of the
syringe, causing a forced stall initialization. The plunger then moves down-
ward 120 full increments, and then upward 120 increments minus the <n>
specified amount, leaving a gap between the syringe seal and the top of the
plunger. This small gap was designed so that the seal does not hit the top of
the plunger each time the syringe moves to the home or zero position. This
maximizes the life of the syringe seal.
Arguments:
For example, to offset 10 increments away from the zero position, send the
following string:
[k10ZR]
Since [k] only takes effect on initialization, the [k] command is usually fol-
lowed by an initialization command, [Z] or [Y] as shown on previous pages.
Note: Each time the unit is powered down, the [k] value returns to the power-up
default setting.
Perform simulated plunger initialization (z<n>)
The [z] command simulates an initialization of the pump; however, no
mechanical movement of either the plunger or valve occurs. The position
counter is set to <n>, which becomes home for the plunger.
Arguments for C3000/C3000MP:
Arguments for C24000/C24000MP:
This command can be used to recover from a plunger overload error. After-
wards, the pump must be reinitialized using the [Z] or [Y] commands to set
the true home position.
Note: Be sure to reinitialize after using the [z] command to ensure correct
positioning.
<n> The offset in increments from the zero or stall position
<n> 0...120 increments in N0 mode
<n> 0...960 increments in N1 or N2 mode (micro-increments)
{24} Power-up default C3000/C3000MP
{384} Power-up default C24000/C24000MP
<n> 0…3000 increments in N0 mode
<n> 0...24000 increments in N1 or N2 mode (micro-increments)
<n> (0) default argument
<n> 0…24000 increments in N0 mode
<n> 0...192000 increments in N1 or N2 mode (micro-increments)