Watlow PPC-2000 - Manual (Page 173)

PPC-2000 User’s Guide Chapter 4: Troubleshooting
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 147
15. Reset the controller and download the AnaWin3 Snapshot.
Refer to Resetting Closed-Loop Control Parameters on
page 156.
16. Reload logic program stored variables.
Processor Module LEDs
Refer to the following descriptions of LED indicators when
troubleshooting the Processor module.
• Status Green LED On: Normal condition with logic
program stopped.
• Status Green LED blinking four times per second,
on briefly (230 ms Off, 20 ms On): Normal condition
with logic program running.
• Status LED Off: Indicates low power input.
Corrective Actions:
Check power connections.
Measure power output from power supply.
Disconnect I/O to check for excessive draw on power
supply.
• Status Green LED blinking four times per second,
off briefly (50 ms Off, 200 ms On): Seen at the
beginning of logic program download while previous logic
program is being erased.
• Error 1 Orange LED and Error 2 Red LED on:
Indicates watchdog timeout — control program no longer
running.
Corrective Actions:
Cycle power to PPC-2000 system. Perform RAM clear; see
Resetting Closed-Loop Control Parameters on page 156.
Replace Processor module.
• Error 1 Orange LED on: Indicates low battery or low
voltage from the power supply.
Corrective Actions:
Check to make sure the voltage on the power supply is 12
to 28Vdc.
Replace the battery. See Battery Installation Procedures
on page 145.