Carel IR32C, Руководство пользователя

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Cod. +030220151 - Rel. 2.1 - 04/09/98 24
A = parameters for the alarm control
ALARM PARAMETERS Type Min Max Unit Def
A0 Alarm and fan differentials C 0.1 +20 °C/°F 0.2
AL Low temp alarm (relative to set) F 0 +199 °C/°F 10
AH High temp alarm (relative to set) F 0 +199 °C/°F 10
Ad Temperature alarm delay C 0 199 min 120
A4 Multifunction input configuration IR32S, IRDRSE/S0, IR32Y,
IR32P, IR32C, IRDRC, IR32M C 0 5 - 0
3
A5 (should be kept at zero) C 0 5 - 0
A6 Duty setting in case of external alarm (0=OFF, 1=ON) C 0 100 min 0
A7 External alarm delay (A4=2 multi-function input) C 0 199 min 0
Note: for the set times to become operative, the instrument must be switched off and on again.
A0: Alarm and fan differentials
This parameter represents the differential used for activating the high and low temperature alarms (AL and
AH
-
see the diagram below) and for the control of the fans (see F parameters). In the case of the alarms,
as can be seen from the diagram, the value A0 contributes to determining the points at which the
temperature alarms actually occur.
Default: 0.2 degrees. Available on IR32S, IRDRSE/S0 and IR32Y (alarm differential), and IR32P and IR32C,
IRDRC alarm and fan differential).
AL: Minimum temperature alarm
This parameter allows the low temperature alarm to be selected. The value of AL does not indicate the
temperature at which the alarm will sound, but rather the maximum deviation from the setpoint (i.e. the
requested operating temperature) that is permitted. The low temperature alarm is given as follows:
Low temperature alarm = (setpoint) - (value of AL) - A0
Note that changing the setpoint automatically changes the temperature at which the low temperature alarm
will be given, while the maximum differential permitted (AL) remains as set. The low temperature alarm is
automatically re-instated. This means that if the temperature returns above the minimum value set, the
alarm signal is automatically cancelled. Finally, it should be remembered that the low temperature alarm is
also operative in the continuous cycle mode (see relevant section). if the temperature drops to the alarm
level, the continuous cycle is automatically de-activated, even if the period of time selected has not been
completed. De-activation does not disable the alarm signal.
Default: AL=10
Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C, IRDRC. Parameter with access from remote control.
AH: High temperature alarm
It allows the high temperature alarm to be set. The value of AH does not indicate the temperature at which
the alarm is given, but rather the maximum deviation allowed from the setpoint (i.e. the requested
operating temperature). Therefore:
High temperature alarm = (setpoint) + (value of AH) + A0
Note that changing the setpoint automatically changes the high temperature alarm, while the the maximum
deviation permitted remains the same. The high temperature alarm is also automatically re-instated.
Default: AH=10.
Available on IR32S, IRDRSE/S0, IR32Y, IR32P, IR32C and IRDRC. Parameter with access from remote
control.