Alarm Outputs - Omron E5CN-HR2M-500 Manual

Alarm Outputs

Each alarm can be independently set to one of the following 13 alarm types. The default is 2: Upper limit.
Auxiliary outputs are allocated for alarms. ON delays and OFF delays (0 to 999 s) can also be specified.
Note: For models with heater burnout, SSR failure, and heater overcurrent detection, alarm 1 will be an OR output of the alarm selected from the
following alarm types and the alarms for heater burnout, SSR failure, and heater overcurrent. To output only a heater burnout alarm, SSR
failure alarm, and heater overcurrent alarm for alarm 1, set the alarm type to 0 (i.e., no alarm function).
Set value Alarm type
0 Alarm function OFF
1 *1
Upper- and lower-limit
2 Upper-limit
3 Lower-limit
4 *1
Upper- and lower-limit range
Upper- and lower-limit with
5 *1
standby sequence
6 Upper-limit with standby sequence
7 Lower-limit with standby sequence
8 Absolute-value upper-limit
9 Absolute-value lower-limit
Absolute-value upper-limit with
10
standby sequence
Absolute-value lower-limit with
11
standby sequence
12 LBA (alarm 1 type only)
13 PV change rate alarm
*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 2
Case 1
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⏐
*4. Set value: 5, Upper- and lower-limit with standby sequence
For Upper- and Lower-Limit Alarm Described Above
• Case 1 and 2
Always OFF when the upper-limit and lower-limit hysteresis
overlaps.
• Case 3: Always OFF
Buy Now: www.ValinOnline.com | Phone: 800-774-5630 | Email: CustomerService@valin.com
Alarm output operation
When alarm value When alarm value
X is positive
Output OFF
L H
*
ON
2
OFF
SP
X
ON ON
OFF OFF
SP
X
ON ON
OFF OFF
SP
L H
ON *3
OFF
SP
L H
ON
*4
OFF
SP
*
5
X
ON ON
OFF OFF
SP
X
ON ON
OFF OFF
SP
X
ON ON
OFF OFF
0
X
ON ON
OFF OFF
0
X
ON
ON
OFF
OFF
0
X
ON ON
OFF OFF
0
---
---
Case 3 (Always ON)
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
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
X is negative
No alarm
Set the deviation in the set point by setting the alarm
upper limit (H) and alarm lower limit (L).
X
Set the upward deviation in the set point by setting
the alarm value (X).
SP
X
Set the downward deviation in the set point by setting
the alarm value (X).
SP
Set the deviation in the set point by setting the alarm
upper limit (H) and alarm lower limit (L).
A standby sequence is added to the upper- and
lower-limit alarm (1). *6
X
A standby sequence is added to the upper-limit alarm
(2). *6
SP
X
A standby sequence is added to the lower-limit alarm
(3). *6
SP
X The alarm will turn ON if the process value is larger
than the alarm value (X) regardless of the set point.
0
X The alarm will turn ON if the process value is smaller
than the alarm value (X) regardless of the set point.
0
X
A standby sequence is added to the absolute-value
upper-limit alarm (8). *6
0
X
A standby sequence is added to the absolute-value
lower-limit alarm (9). *6
0
*7
*8
*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 E5CN/E5AN/E5EN/E5GN Digital Temperature
Controllers User's Manual Basic Type (Cat. No. H156) for
information on the operation of the standby sequence.
*7. Refer to the E5CN/E5AN/E5EN/E5GN Digital Temperature
Controllers User's Manual Basic Type (Cat. No. H156) for
information on the loop burnout alarm (LBA).
*8. Refer to the E5CN/E5AN/E5EN/E5GN Digital Temperature
Controllers User's Manual Basic Type (Cat. No. H156) for
information on the PV change rate alarm.
E5CN-H
Description of function
6