Nordson VersaBlue VA - Parameters (Screen 4: Pressure Alarms, Switching between Speed; Pressure Control)

PID Pressure
Control
Parameters
Pressure
sensor B
Control mode
Pressure alarm monitoring
(for all pumps)
OFF
Pressure
sensor A
Pressure
sensor C
Fig. 4‐100
M5
Operation
4‐71
P/N 213828_11
 2014 Nordson Corporation
VersaBlue_PPA
Motor (contd.)
Threshold Switch
NOTE: The threshold switch is automatically deactivated as long as
pressure build-up is enabled.
In threshold switch mode the motors are started and stopped by the line
speed signal.
Motor
100 %Start at:Stop at:0
Off
On
(lower threshold value) (upper threshold
value)
Line speed
signal value
When the upper threshold value is exceeded, the motor starts; when the
value falls below the lower value, the motor stops.
Start at: 10.0 %
Stop at: 5.0 %
Parameters (Screen 4: Pressure Alarms, Switching
Between Speed / Pressure Control)
Pressure alarm monitoring (for all pumps)
Pressure alarm monitoring is available only with options Pressure display and
Pressure control.
If pressure alarm monitoring is switched on, underpressure and overpressure
are monitored. Alarms are triggered depending on the set warning and fault
values (Refer to Pressure Sensor A / Pressure Sensor B).
NOTE: When the speed is regulated in key-to-line mode, an underpressure
warning may be displayed during parent machine startup until the melter
speed setpoint is reached.