Limited Automatic Reset (ALM-02 = -1000...-1)

In the event of an off- or fail to command alarms the related output "Pump1Cmd" or "Pmp2Cmd" output will be switched off and the other pump will be switched on for replacement.

If the alarm condition does no longer exists, then the alarm returns to normal and the pump common alarm output resets as well.

The negative value of parameter ALM-02 is the number of attempts of auto reset until a manual reset is required.

Depending on the current value of the parameter automatic reset function (ALM-02 = -1000…-1), the pump becomes available for operation directly (automatic). With every “Limited Auto Reset” the new value of DISP-03 will be DISP-03 + 1 until DISP-03 is = 0 and now the manual reset function is active.

Now if the alarm condition does no longer exists, then the alarm remains active until the operator resets the alarm. After resetting the alarms, the operation of the pumps will switch back to former state.


A reset, application download or parameter change of ALM-02 transfers the value of ALM-02 to DISP-03. During running application a reset or change of parameter ALM-02 starts the function “Limited Auto Reset” again.  


The reset function as defined by parameter ALM-02 is valid for all alarm types.


Parameter List

-Description

Default value

ALM-02: alarm reset type

<0 = limited auto reset

0 = manual reset

1 = auto reset

1

DISP-03: ALM-02 countdown

-