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7 - Alarms
Choose the channel you want to use as the alarm value. In this example, use the "Hotwater" channel.
Specify the alarm conditions. In this example, use outside limit 1 and limit 2. (OUTSIDE, not (Limit
1 < Value > Limit 2)). Enter values for Limit 1 = 55 ºC and Limit 2 = 65 ºC. Enter times for On-lter
and O-lter. The time species the number of seconds the alarm conditions must be true or false
before the alarm changes to active or inactive respectively. In this example, type 60 seconds in both
elds. Enter a hysteresis. In this example, use 1 ºC.
Write out the alarm message, for example A-alarm Hotwater temperature. This message will also be
sent as an email if you select the Send email option. You should make sure the message accurately
describes the problem. Choose the digital output you want to use for the A-alarm. Alarm outputs
are explained in more detail in 7.5.5.
Select the alarm type. For example Automatic restart, no acknowledge. Click OK to save. You are
returned to the alarm page, where the new alarm now appears in the list.
7�5�4 Service alarm
Assume there is a pump that needs to be serviced every
three years, in other words after about 26,000 hours of us-
age. We can instruct the WMPro to send an email when the
pump is due for a service.
You can nd out more about runtimes in section 11.
Open Settings/Alarms Click on the rst uncongured alarm. Uncongured alarms appear in white
and are numbered, for example Alarm 7.
Give the alarm a name, for example Service Pump 1.
Choose the channel you want to trigger the alarm. = Pump 1 running time.
Select the condition. = OVER, Value > Limit 1. Set Limit 1 = 26000. On-lter, O-lter and Hysteresis
can all be left at 0. Type a descriptive message. Select Send email Select an action channel if you
want to use one. For the alarm type, select Automatic reset, with acknowledge.
When the pump reaches the specied running time, an email is sent. The engineer has to acknowl-
edge the alarm and either reset the timer or increase Limit 1 to 52,000 hours in order to clear the
alarm.
Service alarm
A machine may need a service
after running for a certain number
of hours. The WMPro can send an
email when it is time for a service.
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