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Chapter 6. OPERATION
6 - 1 Power Supply On
When 100 to 240V AC is applied across terminals (39) and (40) on the DCP552, the display goes on in about 10
seconds 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
*: The measurement of a power outage may vary by about 10 seconds.
Power on
Is RAM backup normal ?
Is setup data
C43
set to 0?
Was the power outage
(seconds) shorter than the
setup data
C43
setting?
*
In RUN or FAST mode, the AUTO
or MANUAL mode is invoked.
READY, HOLD, END and READY
FAST modes continue operating.
YES
YES
YES
NO
NO
READY, RUN, HOLD,FAST, END and
READY FAST modes continue operating.
Check start of general reset.
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
NO
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.
Start of operation
Press the ENTER key.
6-1