TriContinent C24000, Product Manual

Page: 40 / 144

Initializing pumps
40
Operating instructions
Initializing pumps
During installation, an initialization was performed using default settings.
Your application is likely to require more specific settings than those the
defaults provide.
This section describes the initialization sequence, and the commands and
options available for customizing the initialization settings to accommodate
your application.
Once the valve is initialized with the input/output ports defined for your
application, priming can proceed.
Note:
• For consistency in initialization, it is recommended that initialization always
be performed in the normal positioning mode (the default mode). For details
on positioning modes, see "Set plunger resolution (increment) mode (N)"
(page 60).
• The following descriptions mention valve configuration using various [U]
commands. These configurations are considered factory-only options, which
are set appropriately during manufacture. It is assumed that the user knows
what kind of valve the pump has, and that the valve selection setting is cor-
rect for that particular valve.
• On power-up, the C-Series automatically homes the valve motor. This feature
can be disabled if desired.
Initialization sequence
The typical initialization sequence, in response to the [Z] or [Y] command, is
as follows:
1.
Valve is homed to output right position with the [Z] command, or output left
with the [Y] command.
2.
Syringe motor speed and stall force are set by [Z] or [Y] arguments.
3.
If pump is at top of stroke, move valve to input and move down and out of
home opto.
4.
Valve moves to output; plunger moves up until home opto is tripped.
5.
Plunger is then stalled at the top of the syringe.
6.
Valve moves to input; syringe travels downward a fixed number of incre-
ments.
7.
Valve moves to output; syringe moves up and stops at syringe gap volume
<k> increments away from the stall position.
The output position of the valve is assigned to the left or right side, depend-
ing upon the Initialization command [Z] or [Y], and all syringe velocity
parameters ( [V], [v], [c] and [L] ) are reset to default values. Increment
mode [N] retains its value.
The force and speed at which the plunger stalls against the top of the
syringe can be controlled via the [Z] or [Y] command arguments.
The full range of initialization commands are described on the following
pages.