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O p e r a t i o n l
4 - 1 9
4
Opera
tion
H T C D C C o n t r o l A l a r m s
P
ASSIVE
A
LARMS
Passive alarms flash the alarm code and display process temperature until the
alarm condition goes away, or it becomes a shutdown alarm.
C o d e
D e s c r i p t i o n
A l a r m L E D
P1
Process Temperature Deviation
Blinking Red
S
H U T D O W N
A
L A R M S
Shutdown alarms flash the alarm code and display process temperature. The HTC
process air heater should stop when the process temperature is below 150°F
(65.6°C) but should still flash the alarm code until the Acknowledge Alarm button
is pressed. If the alarm condition is still active, the HTC cannot start, it will flash
the alarm code again. If the alarm condition is not active, the display should return
to the normal default screen display and the HTC is ready to run.
Alarms place the control in “standby” mode. After the alarm is corrected and
acknowledged, cycle the heater Standby/Enable switch to “Standby” then back to
“Enable” to restart the process control.
C o d e
D e s c r i p t i o n
A l a r m L E D
A1
Process High Temperature
Solid Red
A2
Process Temperature Loop Break
Solid Red
A3
Process Heater Box High Temperature
Solid Red
A10
RTD Integrity
Solid Red
A39
EEProm Write Error-Internal Control
Solid Red
Board Problem
A49
Process Protection High Alarm
Solid Red
A50
Process Differential Alarm
Solid Red
Summary of Contents for Hopper Temperature Controller
Page 6: ...iv l Table of Contents...
Page 12: ...1 6 l Introduction...
Page 20: ...2 8 l Description...
Page 62: ...4 26 l Operation...
Page 80: ...6 16 l Troubleshooting...