Honeywell DCP551 Mark ΙΙ User Manual page 57

Chapter 5. FUNCTIONS
PV event
5-8
• When there is a G.SOAK at the end of the previous segment, the On Time in the next
segment is ignored if it is set to 0. (See segments 11 and 12 in the figure.)
Thus the ON = 0 of segment 12 is not output at the end of the set time for segment 11,
but when the G.SOAK wait ends.
• This function can be combined with an event ON delay set using PARA. Delay works
when an event goes from off to on. A delay is not triggered when an On Time contin-
ues across two segments as shown in segments 5 and 6 in the figure.
Segment
On-time
Off-time
Output-ON
Output-OFF
Segment
ON=0
On-time
Off-time
Output-ON
Output-OFF
• Basic specifications
The difference between PV, deviation, absolute value deviation, SP, MV and PV1-PV2
for each event type is shown on the following pages. The thick lines show ON and OFF
conditions. The upper line indicates ON and the lower line indicates OFF conditions.
EV indicates the event set value and H indicates the hysteresis value. Outputs in
READY mode are OFF. But normal PV1 upper and lower limit operation and normal
PV2 upper and lower limit operation events run also in the READY mode.
• Event standby
Standby events operate as described below.
• If the event is in the gray area
READY to RUN mode or when the power is restored after an outage, the event
operates without a standby. The upturned arrows in the figures indicate ON while
the downturned arrows indicate OFF.
• If the event is outside the gray area
READY to RUN mode or when the power is restored after an outage, it remains
off until it enters the gray area
After entering the gray area
while the downturned arrows indicate OFF.
A standby event is off in the READY mode.
11
Segment time
12
shown in the figure during a change from
shown in the figure during a change from
.
, the upturned arrows in the figures indicate ON
G.SOAK wait