Changing the type of input signal on the PHC recorder
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This recorder is a multi-input device which permits the input for any channel to be changed to thermocouple, RTD or DC voltage input. Follow the procedure described below to change the input type.
Step 1:
Turn off the power to the unit.
Step 2:
Open the front door and remove the main unit in the manner shown in the drawings below.
Step 2-1:
Remove paper tray from unit by pressing the release button and pulling paper tray forward.
Step 2-2:
Loosen the lock screw (M4) inside the recorder using a Phillips type screwdriver.
Step 2-3:
Hold the lower base plate at the square hole and forcedly pull it forward. The recorder will be removed from the case.
Step 2-4:
Change the settings of the pins for individual channels on the internal printed circuit board. Use pliers to remove and insert pins.
Step 2-5:
After completing the hardware change, push the main unit back into its original place and screw back into position.
Step 2-6:
Change the input terminal wiring to make it correspond to the new input signal type. For DC current input, provide the input terminals with shunt resistors.
Step 2-7:
Refer to Section 7.8 in the manual and carry out the programming changes for each channel that has been modified.
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