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6.4.2
Resetting alarms
When a fault (alarm) occurs, these alarms must be reset by pressing
twice. The display shows "reset alarms" for approx. 1sec. and then returns to the main display.
In case of a fault and the OK key in the main display is pressed only once, then only the alarm relays
and the buzzer are reset, however the fault indication in the display remains.
If an automatic reset has been activated, fault indication only disappears when the fault is not present
any longer (for example, when the manual motor starter is switched on again).
6.4.3
Alarm relays 1 - 3
In this menu the type of alarm relay can be selected. In case of a fault, it can be determined whether
the contacts are to be opened (NC = normally closed) or closed (NO = normally open) and additionally
whether they are to flash. Four options are available:
•
NC
•
NO
•
NC flashing
•
NO flashing
This function can be individually selected for each relay.
This function is important in order to determine the behaviour of the controller in case of an alarm due
to mains voltage loss. You can determine whether the alarm relay should remain in the alarm position
or not. In this state, the relay is deactivated in any case, the NO relay contact is open,
the NC contact is closed.
When the relay position is to be your alarm position then select NO, otherwise NC.
When the flashing function is additionally activated, then the relay switches on and off periodically at a
clock rate of 1:2.
6.4.4
Mask Relays 1 - 3
In these menus, each alarm relay can be assigned which fault the alarm relay is to switch.
This allows free assignment of the relay function to a given fault status.
A set bit (1) means that the fault is assigned to the relay, in case of (0) the fault is not assigned to the
relay.
In this way fault groups can be assigned to each relay, for example.
Relay 1 -> general faults
Relay 2 -> Fault Pump 1
Relay 3 -> Fault Pump 2
7
When the internal buzzer is active, pressing the key once deactivates the buzzer.
HOMA Pump Technology
7
the OK key in the main display
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