Humidifier alarms

In case the input "SteamGenStatus" is connected on-, fail-to-command- and off alarms are generated.

When a failure at the input "SteamGenAlarm" or off alarm occurs, the humidification output control signal "HumidControl" is directly set to 0%. Only in case of a failure, additionally the output "SteamGenEnable" is also switched off.


Depending on the status connections and the value of parameter ALM-01, different types of alarms will be generated, as shown in the next tables.

The module provides three status alarm outputs. The status alarms are delayed by the value of parameter ALM-01.

To configure on, off or fail-to-command alarm, set ALM-03 to:

Alarm type ALM-03

Alarm output behavior

No alarm (0)

Only status monitoring is done and no alarms are generated

Failed to command alarm (1)

The status is monitored and a fail-to-command alarm is generated after the time of the delay defined in parameter ALM-01

Separate On and Off alarms (2)

The status is monitored and differentiated on/off alarms are generated, after the delay of the parameter ALM-01



Steam Generator Enable

Status input

On/ off alarms selected

Fail to command alarm selected

Steam generator on

off

Steam generator off alarm

Steam generator fail to command alarm

Steam generator off

on

Steam generator on alarm

Steam generator fail to command alarm



Alarm input

The alarm input "SteamGenAlarm" will generate a point alarm.

Manual- or automatic reset of alarms

In case of an active alarm, manual or automatic reset of alarms can be selected, depending on the setting of parameter ALM-02.


Note: When an automatic reset function was selected in the parameter list (ALM-02 = 1), the related output "SteamGenEnable" will stay in the position, which has :


Common alarm output

The output "CommAlarm" will be in alarm whenever the  on- / off- / fail to command alarms or alarm inputs are in alarm.


Description

Default value

ALM-01: delay status alarm; 0 = disable

60 sec

ALM-02: alarm reset type

0 = manual reset

1 = auto reset

1

ALM-03: status alarm type

0 = no alarm

1 = fail to command alarms

2 = on/ off alarms

1