Preliminary Information; Table 7-3 Disconnect The Field Wiring; Figure 7-1 Location Of The Input Connections On The Input Boards - Honeywell DR4500A Product Manual

Input Calibration - Preliminary Information

7.4 Preliminary Information

Disconnect the field wiring
Depending on which input (#1 or #2) you are going to calibrate, tag and disconnect any field wiring
connected to the input terminals on the input boards inside the recorder. Reference Figure 7-1 and follow
the procedure in Table 7-3.
Step
1
Remove the operating power from the recorder.
2
Open the door on the recorder.
3
Loosen the slotted cap screw on the right side of the chart plate, and open the chart plate.
4
Depending on the input (1 or 2) you are going to calibrate, remove the wired plug from the
input connector (J2) on the applicable circuit board. See Figure 7-1 for the location of the
circuit boards and input connectors.
5
Tag and disconnect the field wiring installed in the applicable input connector plug.

Figure 7-1 Location of the input connections on the input boards

180 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual

Table 7-3 Disconnect the field wiring

Mother board
for options
J2 on input #2 board (optional)
Action
Main board
#2 #1
Alarm output
digital input
board (optional)
J2 on input
#1 board
22088
Release M
April 2017