Nor-Cal SDC15 Controller User Manual
Page 94
5-44
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
Operation type
Set value
Direct action
Reverse action
of operation
type
Alarm
23
ON if alarm occurs (alarm code AL01 to 99).
OFF if alarm occurs (alarm code AL01 to 99).
(status)
OFF in other cases.
ON in other cases.
READY
24
ON in the READY mode.
OFF in the READY mode.
(status)
OFF in the RUN mode.
ON in the RUN mode.
MANUAL
25
ON in the MANUAL mode.
OFF in the MANUAL mode.
(status)
OFF in the AUTO mode.
ON in the AUTO mode.
Invalid
26
Always OFF
Always ON
During AT
27
ON when AT is executed.
OFF when AT is executed.
(Status)
OFF when AT is stopped.
ON when AT is stopped.
During SP ramp
28
ON during SP ramp.
OFF during SP ramp.
OFF when SP ramp is not performed or is completed. ON when SP ramp is not performed or is completed.
Control action
29
ON during direct action (cooling).
OFF during direct action (cooling).
(status)
OFF during reverse action (heating).
ON during reverse action (heating).
ST setting standby
30
ON in the ST setting standby.
OFF in the ST setting standby.
(status)
OFF in the ST setting completion.
ON in the ST setting completion.
Invalid
31
Always OFF
Always ON
Timer
32
(status)
High and low limits
33
Invalid in this unit.
Invalid in this unit.
of MFB value
ON/OFF status is undetermined.
ON/OFF status is undetermined.
The direct and reverse action settings are disabled for the timer event.
When using the timer event, it is necessary to set the operation type of the DI assignment to
"Timer Start/Stop". Additionally, when setting the event channel designation of the DI
assignment, multiple timer events are controlled from individual internal contacts (DI).
●
Setting items
• ON delay time: A period of time necessary to change the event from OFF to ON after DI has
been changed from OFF to ON.
• OFF delay time: A period of time necessary to change the event from ON to OFF after DI
has been changed from ON to OFF.
●
Operation specifications
• The event is turned ON when DI ON continues for ON delay time or longer.
• The event is turned OFF when DI OFF continues for OFF delay time.
• In other cases, the current status is continued.
●
CAUTION
When setting the ON delay and OFF delay, it is necessary to put in "High function
configuration".
The default settings of the ON delay and OFF delay before shipment are 0.0s.
The default setting of the event channel designation of the DI assignment before shipment is
"0". In this case, the timer event start/stop can be set for all internal events from one internal
contact (DI).
Additionally, as one or more event channel designation is set, the timer event start/stop can
be set for one internal event specified by one internal contact (DI).
However, when setting the event channel of the DI assignment, it is necessary to put in "High
function configuration".
Time
ON
Internal event
ON
DI
OFF delay
ON delay