8C-PDOD51 Honeywell

Event pen function

If Function prompt “PEN 1IN” under Set-up prompt “PEN 1” has been configured as DGTL1 or DGTL2,

the pen (channel) operates as an “event pen” and tracks the remote contact (switch) closure by way of the 

digital 1 or digital 2 input wired to the alarm output/digital input printed circuit board.

Event pen operation

When the switch opens, the pen for the channel tracks at the configured OFF position (0-100%) on the 

chart.

When the switch closes, the pen tracks at the configured ON position (0-100%) on the chart and tracks at 

this position until the switch is opened.

Thus, the “Event Pen” record makes it easy to monitor the on/off operation of an external event.

5.15 Maximizing Pen Life

Steps for maximizing pen life

87HTable 5-29 lists nine steps that will help to maximize the life of your chart pen.

Table 5-29 Maximizing pen life

Step Action

1 Store the chart paper in a cool, clean dry place where the temperature does not exceed 40°C 

(104°F) and the humidity is below 65% RH.

2 Do not expose the pen tip and chart paper to abrasive chemicals or dust that cause excessive 

pen wear.

3 If the recorder is used in a dusty atmosphere, provide a positive ‘clean air purge’ to minimize 

dust particle accumulation on the chart paper.

4 Periodically clean the pen arm using a cotton swab dipped in alcohol. This is more important 

when the recorder is located in a dusty environment and no ‘clean air purge’ is used.

5 Never let the pen tip ride on the chart plate when the paper is not present. Use the pen lifter to 

raise the arm when changing the paper.

6 Keep the door closed while recording.

7 Always insert the pen arm tip into the shipping sponge when storing or shipping the recorder.

8 Be sure that the chart paper lays flat against the chart plate. Any ripple in the paper will cause 

light pen printing.

9 Be sure the chart hub assembly is pushed onto the motor shaft so that it is flush with the chart 

plate.

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