PPC-2000 User’s Guide
Chapter 3: Operating with AnaWin 3
Doc.# 30002-00 Rev 2.3
Watlow Anafaze
95
Alarms
The controller has three different kinds of alarms: failed sensor
alarms, the global alarm, and process alarms. For information
on each of these alarms, refer to the following sections.
Failed Sensor Alarms
Failed sensor alarms indicate T/C breaks and failed RTDs due
to open leads.
When a channel is in
Auto
or
Tune
mode and a failed sensor
alarm occurs, the controller sets the channel to
Manual
control
at the
Sensor Fail Heat%
or
Sensor Fail Cool%
set in the
Channels
spreadsheet.
A failed sensor alarm is only detected for an input that is
selected as the
PV Source
for a channel.
Global Alarm
The global alarm occurs when a channel alarm set to
Alarm
(not
Control
) occurs or when there are any failed sensor alarms. If an
alarm occurs, the
!Alarm
screen displays the corresponding
alarm message. The global alarm output stays on until the
original alarm is acknowledged.
Process Alarms
Process alarms include high and low deviation and high and
low process alarms. Each of these alarms may be enabled or
disabled. If enabled, each may be set to function as an alarm or
a control. Refer to
parameters used to set up these alarms.
describes the
difference between Alarm type and Control type alarms.
Table 3.2
Alarm Types
Alarm Type
Description
Alarm
Standard alarm function. Digital output, or Soft
Bool, if selected, activates on alarm, deactivates
when channel is not in alarm. Global alarm output
activates and requires alarm acknowledgment to
clear.
Control
Digital output, or Soft Bool, if set, activates on
alarm, deactivates when channel is not in alarm.
Global alarm output does not activate. No alarm
acknowledgment required to clear.
Summary of Contents for Anafaze PPC-2000
Page 2: ......
Page 14: ...Table of Contents PPC 2000 User s Guide viii Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 24: ...List of Tables PPC User s Guide xviii Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 36: ...Chapter 1 Overview PPC 2000 User s Guide 12 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 112: ...Chapter 2 Hardware Installation PPC 2000 User s Guide 88 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 184: ...Chapter 4 Troubleshooting PPC 2000 User s Guide 158 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 296: ...Chapter 7 Specifications PPC 2000 User s Guide 268 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 310: ...Appendix A Modbus Protocol PPC 2000 User s Guide 282 Watlow Anafaze Doc 30002 00 Rev 2 3...
Page 311: ...Doc 30002 00 Rev 2 3 Watlow Anafaze 283 B Appendix B Declaration of Conformity...
Page 319: ...PPC 2000 User s Guide Glossary Doc 30002 00 Rev 2 3 Watlow Anafaze 291...
Page 320: ...Glossary PPC 2000 User s Guide 292 Watlow Anafaze Doc 30002 00 Rev 2 3...