DAB PUMPS ACTIVE DRIVER T/T 5.5 Инструкция по установке и обслуживанию - Страница 14

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13.1

"bL" Blockage due to water lack

In conditions of zero flow the system switches off the pump. If, by mistake, a pressure set-point is set

which is higher than the maximum pressure that the electropump can supply, the system indicates

"blockage due to water lack" (bL) even if there is really no lack of water. Then you must lower the

switch-off pressure to a reasonable value that normally does not exceed 2/3 of the head of the installed

electropump.

13.2

"LP" Blockage due to low supply voltage (excluding A.D. M/M 1.1 and A.D. M/T 1.0)

When the line voltage at the supply terminal falls below 180V, the ACTIVE DRIVER goes into block

status due to low line voltage. This is reset only automatically when the voltage at the terminal rises

above 200V.

If the dimensions of the wiring are not suitably large, this block may occur when the electropump is

started even if higher voltages are measured with the machine in stand-by mode.

13.3

"LL" Blockage due to low supply line (excluding A.D. M/M 1.1 and A.D. M/T 1.0)

This indication is given when more than 5 falls in the supply voltage (LP) are recorded in the space of

an hour. However the appliance continues operating regularly. Repeated switch-offs of the appliance do

not cause the appearance of the "LL" signal.

If the signal "Low line voltage" (LL) is given, the system does not block and the normal indications of

operating status or error continue to alternate on the display.

The ACTIVE DRIVER is equipped with an electronic protection for current overloads in the

electropump motors.

13.4

"SC" Blockage due to direct short circuit between the phases of the output terminal

The ACTIVE DRIVER is equipped with protection against the direct short circuit which may occur

between the phases U, V, W of the "PUMP" output terminal. When this block status is indicated, you

are advised to eliminate the short circuit and to check the wiring carefully to ensure it is unbroken and

the installation in general. Once these checks have been made you can try to reset operation by

simultaneously pressing the "+" and "–" keys; anyway, this will have no effect until 10 seconds have

passed from the moment in which the short circuit occurred.

Whenever a short circuit occurs, an event counter is increased and saved in the permanent memory

(EEPROM).

AFTER THE HUNDREDTH SHORT CIRCUIT THE MACHINE BLOCKS PERMANENTLY

AND IT WILL NO LONGER BE POSSIBLE TO UNBLOCK IT!

13.5

MANUAL RESET of error condition

In error status the operator can reset the error by forcing a new attempt, pressing the "+" and "-" keys

simultaneously.

13.6

Self-reset of error conditions

For some malfunctions and block conditions, the system makes attempts at automatic reset of the

electropump.

The following table shows the sequences of the operations performed by the ACTIVE DRIVER for the

different types of blockage.

Display indication

Automatic resets of error conditions

Description

Blockage due to water lack

Blockage due to low supply

voltage

Blockage due to high

voltage

Blockage due to overheating

of the power stages

Blockage due to current

overload

Blockage due to current

overload in the output

stages

ENGLISH

Sequence of automatic reset

- An attempt every 10 minutes for a total of 6 attempts

- An attempt every 1 hour for a total of 24 attempts

- An attempt every 24 hours for a total of 30 attempts

- Reset when voltage returns to a value in the range

220V - 20% + 10%

- Reset when the internal voltage returns in acceptable

conditions

- Reset when the temperature of the power stages falls

below 70°C again

- An attempt every 10 minutes for a total of 6 attempts