Self-Reset Of Error Conditions; Inverter Electronic Control And User Interface; Operation With Control Unit - DAB e.sybox Instructions Pour L'installation Et L'entretien

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4.3 - Self-reset of error conditions

For some malfunctions and blockage conditions, the system attempts
automatic self-reset.
The auto self-reset procedure concerns in particular:
"BL" Blockage due to water lack
"PB" Blockage due to line voltage outside specifications
"OT" Blockage due to overheating of the power stages
"OC" Blockage due to motor overload
"BP" Blockage due to fault of the pressure sensor
For example, if the system is blocked due to water lack, the device auto-
matically starts a test procedure to check whether the machine is really
left definitively and permanently dry. If during the sequence of operations
an attempted reset is successful (for example, the water comes back),
the procedure is interrupted and normal operation is resumed.
Table 21 shows the sequences of the operations performed by the device
for the different types of blockage.
Automatic resets of error conditions
Display indica-
Description
tion
Blockage due to water
BL
lack
Blockage due to line
PB voltage outside speci-
fications
Blockage due to over-
OT heating of the power
stages
76
Automatic reset sequence
- One attempt every 10 minutes for a
total of 6 attempts
- One attempt every hour for a total of
24 attempts
- One attempt every 24 hours for a total
of 30 attempts
- It is reset when it returns to a specific
voltage
-It is reset when the temperature of
the power stages returns within the
specifications.
Blockage due to motor
OC
overload
Table 3: Self-reset of blockages

5 - INVERTER ELECTRONIC CONTROL AND USER INTERFACE

The inverter makes the system work at constant pressure. This
regulation is appreciated if the hydraulic plant downstream from
the system is suitably sized. Plants made with pipes with too
small a section introduce load losses that the equipment cannot
compensate; the result is that the pressure is constant on the
sensors but not on the utility.
Plants that are excessively deformable can create the onset
of oscillations; if this occurs, the problem can be solved by
adjusting the control parameters "GP" and "GI" (see par 7.6.4 -
GP: Proportional gain coefficient and 7.6.5 - GI: Integral gain
coefficient).

5.1 - Operation with control unit

e.sybox, alone or in a pumping unit, may be connected by means of wire-
less communication to a remote unit referred to below as a control unit.
Depending on the model, the control unit offers a variety of functions.
The possible control units are:
• e.sylink
• PWM IO
• PWM Com
Combining one or more e.syboxes with a control unit allows the use of:
• Digital inputs
• Relay outputs
• Remote pressure sensor
- One attempt every 10 minutes for a
total of 6 attempts
- One attempt every hour for a total of
24 attempts
- One attempt every 24 hours for a total
of 30 attempts