Graco ProMix PD2K, Операция

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Setup Mode Screens
System System
System Screen
Screen
Screen 4
4
4
System screen 4 sets the following system operating
parameters.
Figure 40 System Screen 4
Fluid Fluid Fluid Control Control Control
Select the desired operating mode (pressure or flow),
using the pull-down menu.
• In Pressure Pressure
Pressure Mode,
Mode,
Mode, the motor will adjust the pump
speed to maintain the fluid pressure set by an
external control device.
• In Flow Flow
Flow Mode,
Mode,
Mode, the motor will maintain a constant
speed to maintain the target flow rate set by an
external control device.
Gun Gun
Gun Trigger
Trigger
Trigger Signal
Signal
Signal
Select the format of the signal indicating whether the
spray device is triggered.
• Discrete — the signal is sent via a direct,
hard-wired connection
• Network — the signal is sent via a PC, PLC, or
other networked device.
Flow Flow
Flow Control
Control
Control (Setpoint
(Setpoint
(Setpoint Signal)
Signal)
Signal)
Select the format of the signal that indicates system
flow rate or pressure.
• Discrete — the signal is sent via a direct,
hard-wired connection. This selection will make
the Max Set Point field active.
• Network — the signal is sent via a PC, PLC, or
other networked device.
• Recipe — flow rate or pressure is set according to
user-entered value on each recipe screen.
Max Max
Max Set
Set
Set Point
Point
Point
Set the scaling factor for the 4–20 mA discrete Flow
Control Signal (see
Analog Inputs, page 24 ).
Low Low Low Flow Flow Flow Tolerance Tolerance Tolerance
This field is active if Fluid Control is set to ‘Flow’.
The system will detect if the flow rate falls below a
designated percentage of the target flow rate. Set
that percentage in this field. For example, you might
want the system to time out if it detects a flow rate
that is 10 percent of the target, rather than waiting
until a no flow timeout occurs.
Low Low Low Flow Flow Flow Timeout Timeout Timeout
The low flow timeout causes the system to shut down
after the designated period of time if the flow rate
continues to be at or below the low flow tolerance set
in the previous section. The default is 5 seconds.
Enter the desired shutdown time in this field.
Solvent Solvent Solvent Push Push Push Enable Enable Enable
Enable the Solvent Push option for the end of a
mix/spray cycle. When enabled, the system may be
commanded to end a mix/spray cycle with solvent
push using the soft key on the ADM Spray Screen
or using a PLC command. For more details, see
Solvent Push, page 72 .
NOTE: NOTE: NOTE: The solvent push feature is only available
for Flow Mode fluid control systems with single
outlet color change valve configurations (see
Custom Valve Mapping, page 82 ). The checkbox is
only visible if the mix unit is configured in this way.
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