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10. CONFIGURATION LIMITS
No. of nodes
Maximum cable length
70
30 m
50
40 m
10
50 m
The EB 80 network can be configured by assembling the islands according to the requirements of the system in which it is mounted.
For the system to operate safely and reliably, it is important to keep to the constraints associated with the serial transmission system based on CAN
technology and use shielded, twisted cables with controlled impedance, supplied by Metal Work.
The system constraints are defined by the following parameters of the assembly:
• the number of valve bases (nodes)
• the number of signal modules (nodes)
• the number of Additional Electrical Connections (nodes)
• the length of connection cables.
A high number of nodes reduces the maximum length of connection cables, and vice versa.
ALARM
Supply voltage alarm too high
Supply voltage alarm too low
Alarm P. INP CORTOC. 0VDC
Alarm P. OUT CORTOC. 0VDC
P. INP alarm DISCONNECTED
P. OUT alarm DISCONNECTED
PRESSURE OUT OF RANGE ALARM
Pressure sensor disconnected alarm
9.6.3 List of allarms
POSSIBLE CAUSES
SOLUTION
Supply voltage higher 30 VDC
Increase to a sufficient voltage.
Supply voltage below 12 VDC
Supply solenoid valve has shortcircuited
Drain solenoid valve has shortcircuited
Switch the unit off and back on again. If the
Fill solenoid valve disconnected
alarm persists, contact the manufacturer.
Drain solenoid valve disconnected
Downstream pressure exceeds 10200 mbar
Check to see if the drain is blocked. The alarm resets
automatically when the pressure drops below the
threshold.
Electromagnetic disturbances
Move away the cause and switch on the unit
Sensor fault.
Contact the manufacturer.
9.6.2 Troubleshooting
PROBLEM
The display does not come on
The unit does not respond or responds wrongly to the
set point
The unit does not reach the desired pressure
The display shows an unreal value
The display is difficult to read
The unit adjusts continually
Other problems
POSSIBLE CAUSES
SOLUTION
No power supply
Check the power supply, make sure it is
enough and check the wiring is in accordance
with the wiring diagram
Wrong input signal configuration
Configure the appropriate type of input from the menu
Setpoint too low
Provide a suitable setpoint
The full-scale setting is at a lower pressure
Set the full scale correctly
than desired
The supply pressure is too low
Increase the supply pressure
Wrong unit of measurement
Check the unit of measurement
Poor contrast
Adjust the contrast
Air leak in the circuit after the unit
Eliminate the leak
Continuous variation in volume
Normal behaviour; the unit has to keep
adjusting the maintain the preset pressure
Deadband too small
Increase the deadband
Contact the manufacturer
Summary of Contents for EB 80 ETHERNET POWERLINK
Page 1: ...MANUALE D USO USER MANUAL ...
