AKO -D101 Series, Руководство пользователя

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4.6.- Alarms
The unit alerts users via a message on the screen, by activating a relay* or both, when the programmed parameter
criteria are met.
Shows the AH or AL message when the temperature in probe 1 reaches the value set in the
A1 (maximum temperature) and A2 (low temperature) parameters.
This value can be:
Absolute (A0=1): A1/A2 should indicate the temperature at which the alarm should
be activated.
Relative to SP (A0=0): A1/A2 should indicate the number of degrees above or below
the set point at which the alarm is activated. This option
allows users to adjust the set point without having to modify
the high and low alarm settings.
Parameter A10 sets the differentials for both parameters (hysteresis).
This alarm will also activate the auxiliary relay (if P6=2).
In a controller we configure the following parameters: SP =2, A1 =10, A10 =2
- If A0=0 (relative to SP), the maximum temperature alarm goes off when probe 1 reaches 12 degrees and
is disabled when it reaches 10 degrees.
- If A0=1 (absolute), the maximum temperature alarm goes off when probe 1 reaches 10 degrees and is
disabled when it reaches 8 degrees.
Displays the message AE (external alarm) or AES (severe external alarm), when the digital
input configured as external alarm or severe external alarm is activated.
At least one of the digital inputs must be configured as external alarm (P10 or P11=2)
or severe external alarm (P10 or P11=3).
This alarm will also activate the auxiliary relay (if P6=2).
Shows the Adt alarm message when a defrost terminates by time-out, if parameter A8 =1.
This alarm is only displayed on the screen; it will never activate the alarm relay.
Displays PAb message when the digital input configured as door contact (P10 or P11=1), is active longer than the
time set by parameter A12.
This alarm is only displayed on the screen; it will never activate the alarm relay.
The Art message is displayed when the pump down function times out, either in the start-up
or the shutoff phase (see section 4.5).
This alarm is only displayed on the screen; it will never activate the alarm relay.
Max/Min Temperature Alarm
Example
External alarm/severe external alarm (only 4-key controllers)
Defrost alarm completed by time.
Open door alarm (only 4-key controllers)
Pump down alarm timed-out (only 4-relay controllers)
*Only available in controllers with 2 or more relays; the AUX relay must be configured as an alarm (P6=2).
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