Max. in key-to-line
mode
10.0
Pump 1
0.0
V
VAct
ual
ON
Coupling broken
monitoring
PID pressure
control parameters
Pressure
sensor B
Control mode
Pressure alarm monitoring
(global)
OFF
Pressure
sensor A
Pressure
sensor C
Operation
4-67
P/N 7105144G
2008 Nordson Corporation
VersaBlue_NW
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 %
If there are no sensors present, touching the
key leads to a screen in
which the coupling broken monitor can be switched on or off.
Fig. 4-94 M2.2
Screen 4: Pressure Alarms, Speed / Pressure Control
If pressure sensors are present, touching the key leads to the fourth
parameter screen.
Pressure alarm monitoring (global)
Global = for all motors
Pressure alarm monitoring is available only with options Pressure display
and Pressure control.
Fig. 4-95 M5
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).
NOTE: When the speed is regulated in key-to-line mode, an underpressure
warning can be displayed during parent machine startup until the melter
speed setpoint is reached.
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