Watlow CLS200 - Manual (Page 167)

CLS200 Series User’s Guide Chapter 7: Ramp/Soak
Doc.# 0600-3050-2000 Watlow Anafaze 151
Responding to a Tolerance Alarm
A tolerance can be set for each segment. The following oc-
curs when the process variable goes outside this tolerance:
• The profile goes into tolerance hold
• The segment timer holds
• The loop’s single loop display shows TOHO
• The tolerance alarm timer starts
If the process variable returns within the segment toler-
ance before the tolerance alarm time elapses, the profile re-
turns to RUN mode and the tolerance alarm timer resets.
The following occurs if the profile remains out of tolerance
for longer than the tolerance alarm time:
• The controller displays the single loop display with the
tolerance alarm (a flashing T)
• The global alarm output turns on
Press
ALARM ACK to:
• Turn off the global alarm output
• Reset the tolerance alarm timer
• Clear the tolerance alarm
If the process variable does not return within the tolerance,
the tolerance alarm will recur after the tolerance alarm
time elapses again.
If the alarm persists you may want to reset the profile.
Resetting a Profile
To reset a profile, follow these steps:
1. In the single loop display, switch to the loop you want
to reset.
2. Press the RAMP/SOAK key three times to see the
SET MODE parameter.
3. Press the NO key. The following screen will display:
4. Press YES to reset the profile, and then ENTER to con-
firm your choice.
When you reset a profile, the following happens:
• The profile returns to the ready segment. The setpoint
goes to the ready setpoint, and the event outputs go to
the states you specified for the READY EVENT OUTPUT
parameter in the READY SEGMENT EDIT EVENTS sub-
menu (See Ready Segment Edit Events on page 139.)
ALARM
01 A SEG01/05 R
SET MODE? RESET