OM-220 389 Page 33
1
Process Control Module PC4
Diagnostic LED’s are visible inside unit,
located on PC4 mounted on the top tray.
Refer to Section 9-3 for information on
diagnostic LED’s.
Reinstall cover after checking diagnostic
LED’s.
216 956-A / Ref. 803 419-B
9-2.
Process Control Module PC4 Diagnostic LED’s
1
LED2
LED1
LED4
LED3
9-3.
Diagnostic LED’s On Process Control Module PC4
LED
Status
Diagnosis
1
On
Indicates −25 volts dc is present on process control module PC4
Off
Indicates −25 volts dc is not present on process control module PC4
2
On
Ind25 volts dc is present on process control module PC4
Off
Ind25 volts dc is not present on process control module PC4
3,4
On
See Network Status Table in Section 9-4
Off
See Network Status Table in Section 9-4
