Operation - Start-up
120 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual Release M
April 2017
Key error
When a key is pressed and the prompt “KEY ERROR” appears in the lower display, it will be for one of
the following reasons:
parameter not available,
not in Set Up mode, press SET UP key first,
key malfunction, perform keyboard test.
Start-up procedure
Use the procedure listed in 59HTable 5-5 to start up the recorder.
Open the recorder door. Apply power and wait for the recorder to run its power-up tests.
If FAILSAFE starts blinking in the lower display, refer to Section 9 for
troubleshooting data.
For recorders with two controllers (both enabled), be sure the CHN ‘1’ indication is
lit for steps 2-6. If CHN 1 is not lit, sequentially press the LOWR DISP key until “1”
is lit when “OUT” is displayed.
Table 5-5 Procedure for starting up the recorder
For RECORDER ONLY models, just check that the pen
is operating and skip to step 6.
Until “MAN” indicator is ON.
The recorder is in manual mode and the Output (OUT)
in percent is displayed in the lower display.
Adjust the output value and ensure that the final control
element is functioning correctly.
Upper Display: shows the PV value
Lower Display: shows OUT and the output value
in %
Make sure the pen trace on the chart corresponds to
the change in output.
Make sure the recorder has been configured properly
and all the values and selections have been recorded
on the Configuration Record Sheet.
To tune your recorder automatically, see section 60H5.10
61HUsing Accutune II.
Refer to Set Up group TUNING 1 or TUNING 2 to
ensure that the proper selections for PROP BD or
GAIN, RATE MIN, and RSET MIN or RSET RPM have
been entered.
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