Setpoint
Underpressure
warning
Max. sensor measuring range
Actual
value
0 bar
Underpressure
warning
Max. sensor measuring range
Troubleshooting
6-10
P/N 7105144G
2008 Nordson Corporation
VersaBlue_NW
Triggering and Resetting Alarms (contd.)
Underpressure − Warning −
NOTE: The values for warnings and faults are absolute values in Speed
control mode with the option Pressure display. With the option Pressure
control, the values are differential values for sensors A and B and absolute
values for the sensors C.
Underpressure Warning Triggered
Pressure Control: Pressure Sensors A and B
The pressure has fallen below the setpoint by more than the differential
value (D) Underpressure warning for longer than 20 seconds. The motor
assigned to the pressure sensor has received all of the releases needed to
run. However, the system must be ready for operation.
Automatic Reset
The pressure has exceeded the setpoint minus differential value (D)
Underpressure warning.
Pressure Control: Pressure Sensors C
Speed control (pressure display): Pressure sensors A, B, and C
The pressure has fallen below the absolute value Underpressure warning
for more than 20 seconds. The warning is indicated even if the system is not
yet ready.
Automatic Reset
The pressure has exceeded the absolute value Underpressure warning.
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