Eliwell DR4000 series Handbuch Seite 29

Minimum temperature
alarm
Maximum temperature
alarm
Reset after minimum
temperature alarm
Reset after maximum
temperature alarm
Associated parameters: Att, AFd, HA1/2, LA1/2, PAO, SAO, tAO and AOP.
Note: The PERIODIC CYCLE function is selected by pressing a key
•
• it manages the associated relay output in PWM mode
This function can be associated with both the relay outputs (by setting parameters H21
and H22 =2) and can be used to implement "Duty Cycle" control with the intervals set by
parameters Con and CoF.
MAX/MIN TEMPERATURE ALARMS
Absolute temperature
value (Att=0)
AFd
LA1/LA2
Temp. ≤ LA1/2 (LA1/2 with sign)
Temp. ≥ HA1/2 (HA1/2 with sign)
Temp. ≥ LA1/2 + AFd
Temp. ≤ HA1/2 - AFd
CYCLIC CONTROLLER
Temperature relative
to setpoint value (Att=1)
AFd AFd
HA1/HA2
SP1+ LA1/SP2 + LA2
Temp. ≤ Set + LA1/2 *
Temp. ≥ Set + HA1/2 **
Temp. ≥ Set + LA1/2 + AFd or
≥ Set - ILA1/2I + AFd (LA1/2 < 0*)
Temp. ≤ Set + HA1/2 - AFd (HA1/2 > 0**)
* if LA1/2 is negative, Set + LA1/2 < Set
** if HA1/2 is negative, Set + HA1/2 < Set
Off
AFd
set
SP1+ HA1/SP2 + HA2