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*1
With set values 1, 4 and 5, the upper and lower limit values can be set
independently for each alarm type, and are expressed as "L" and "H."
*2
Set value: 1, Upper- and lower-limit alarm
Case 1
Case 2
SP
L H
L
H
SP
H<0, L>0
H>0, L<0
|H| < |L|
|H| > |L|
*3
Set value: 4, Upper- and lower-limit range
Case 1
Case 2
L
H
SP
SP
L
H
H<0, L>0
H>0, L<0
|H| < |L|
|H| > |L|
Case 3 (Always ON)
H<0, L<0
H
SP
L
H<0, L>0
|H| ≥ |L|
H
L
SP
H>0, L<0
SP
H
L
|H| ≤ |L|
Case 3 (Always OFF)
H<0, L<0
H
SP
L
H<0, L>0
|H| ≥ |L|
H
L
SP
H>0, L<0
|H| ≤ |L|
SP
H
L
E5CC-800/E5CC-B-800/E5CC-U-800
*4
Set value: 5, Upper- and lower-limit with standby sequence
For Upper- and Lower-Limit Alarm Described Above *2
• Case 1 and 2
Always OFF when the upper-limit and lower-limit hysteresis overlaps.
• Case 3: Always OFF
*5. Set value: 5, Upper- and lower-limit with standby sequence
Always OFF when the upper-limit and lower-limit hysteresis overlaps.
*6
Refer to the E5@C Digital Controllers User's Manual (Cat. No. H174) for
information on the operation of the standby sequence.
*7
Refer to the E5@C Digital Controllers User's Manual (Cat. No.H174) for
information on the loop burnout alarm (LBA).
*8
Refer to the E5@C Digital Controllers User's Manual (Cat. No. H174) for
information on the PV change rate alarm.
*9
When heating/cooling control is performed, the MV absolute upper limit
alarm functions only for the heating operation and the MV absolute lower
limit alarm functions only for the cooling operation.
7
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