Chapter 6. Operation; Power Supply On - Honeywell DCP551 Mark ΙΙ User Manual

Chapter 6. OPERATION

6-1 Power Supply On

When 100 to 240V AC is applied across terminals (39) and (40) on the DCP551, the display goes on in about 10 sec-
onds and controls and other operations start. When the controller is starting up, the LEDs on the profile display go on
at irregular intervals one after the other starting from top right in clock-wise order until the controller becomes ready
for operation.
The startup flow procedure is shown below.
Startup flow procedure
Power on
Is RAM backup normal ?
YES
Is setup data set to 0?
C43
NO
Was the power outage
(seconds) shorter than the
setup data setting?
C43
NO
In RUN or FAST mode, the AUTO
or MANUAL mode is invoked.
READY, HOLD, END and READY
FAST modes continue operating.
Program operation and fixed command control continue operating.
AUTO and MANUAL modes continue operating.
(In MANUAL mode, numeric entries remain intact.)
Program and segment numbers remain unchanged.
Segment progress time remains unchanged.
In AUTO mode, display numbers in the basic display status remain unchanged.
Auto tuning is interrupted.
A G.SOAK wait is initialized.
A PID computation is initialized.
Event output status is initialized.
Changes between setting display status and basic display status.
NO
YES
YES
*
READY, RUN, HOLD,FAST, END and
READY FAST modes continue operating.
Start of operation
*: The measurement of a power outage may vary by about 10 seconds.
Check start of general reset.
Press the ENTER key.
Parameters are reset to default values.
All programs are cleared.
Program run mode
READY mode
AUTO mode
The program is reset to segment
number 1 in program number 1.
Segment advancing time = 0
6-1