4
IM 77J01R21-01E 3rd Edition
Feb.20 2017-00
6. DESCRIPTION OF ALARM ACTIONS
This chapter describes examples of alarm actions under the
following conditions.
Item
Alarm 1
Alarm 2
Parameter
Setpoint
Parameter
Setpoint
Direction of
alarm action
E05 : ALM1
ACTION
High-limit
alarm
E06 : ALM2
ACTION
Low-limit
alarm
Alarm
setting
E03 : SET
POINT1
80
°C
E04 : SET
POINT2
15
°C
Hysteresis
E09 :
HYSTERESIS1
10
°C
E10 :
HYSTERESIS2
5
°C
Alarm ON
delay
E11 : ON
DELAY1
1 sec
E12 : ON
DELAY2
3 sec
Alarm OFF
delay
E13 : OFF
DELAY1
2 sec
E14 : OFF
DELAY2
4 sec
Description
of alarm
actions
The alarm is output if the
condition where the input
value is 80°C or more of
high-limit alarm continues for
1 second or more.
After the alarm is output,
when the condition where the
input value is less than 70°C
of high-limit alarm continues
for 2 seconds or more, the
status returns to normal.
The alarm is output if the
condition where the input
value is 15°C or less of low-
limit alarm continues for 3
seconds or more.
After the alarm is output,
when the condition where the
input value is more than 20°C
of low-limit alarm continues
for 4 seconds or more, the
status returns to normal.
[°C]
0
20
15
40
60
80
100
[1]
[2]
[3]
[4]
1 sec
2 sec
3 sec
4 sec
Alarm-2 hysteresis (5°C)
Alarm-1 hysteresis (10°C)
Alarm-1 setpoint (80°C)
Alarm-2 setpoint (15°C)
Elapsed time
sec
Alarm-1 ON delay
Alarm-1 OFF delay
Alarm conditions
established
Alarm conditions
established
Normal conditions
established
Normal conditions
established
Low-limit alarm ON
Low-limit alarm OFF
Alarm-2 ON delay
Alarm-2 OFF delay
[1]: Alarm status does not continue for more than 1 second after the
alarm conditions are established at alarm 1.
[2]: Normal status does not continue for more than 2 seconds after the
normal conditions are established at alarm 1.
[3]: Alarm status does not continue for more than 3 seconds after the
alarm conditions are established at alarm 2.
[4]: Normal status does not continue for more than 4 seconds after the
normal conditions are established at alarm 2.
Alarm conditions established
Alarm conditions established
High-limit alarm ON
High-limit alarm OFF
Normal conditions established
Normal conditions established
Alarm-1 action
Alarm-2 action
Alarm
Normal
Normal
Normal
Alarm
Normal
7. LIST OF PARAMETERS
DISPLAY
ITEM
MODEL
Model
TAG NO
Tag No.
SELF CHK
Self-check result
A
DISPLAY1
Display 1
A01 INPUT1
Input value 1
A09 OUTPUT1
Output value 1
A15 ALM1 STATUS
Alarm-1 status
A16 ALM2 STATUS
Alarm-2 status
A54 STATUS
Status
*1
A56 REV NO
Rev No.
A58 MENU REV
Menu Rev
A60 SELF CHK
Self-check result
B
DISPLAY2
Display 2
B01 INPUT1
Input value 1
B09 OUTPUT1
Output value 1
B15 ALM1 STATUS
Alarm-1 status
B16 ALM2 STATUS
Alarm-2 status
B60 SELF CHK
Self-check result
D
SET (I/O)
Setting (I/O)
D01 TAG NO.1
Tag no.1
D02 TAG NO.2
Tag no.2
D03 COMMENT1
Comment 1
D04 COMMENT2
Comment 2
D09 RTD TYPE
RTD type
D21 UNIT
Unit
D24 INPUT1 L_RNG
Input-1 low range
D25 INPUT1 H_RNG
Input-1 high range
D39 BURN OUT
Burnout
D57 S/W FILTER
Software filter
*2
D59 NMRR
Frequency setting
D60 SELF CHK
Self-check result
E
SET(ALM)
Setting (alarm output)
*2
E01 SET POINT1
Alarm-1 setting (temperature)
E02 SET POINT2
Alarm-2 setting (temperature)
E05 ALM1 ACTION
Direction of alarm-1 action
E06 ALM2 ACTION
Direction of alarm-2 action
E07 HYSTERESIS1
Alarm-1 hysteresis (temperature)
E08 HYSTERESIS2
Alarm-2 hysteresis (temperature)
E11 ON DELAY1
Alarm-1 ON delay setting
E12 ON DELAY2
Alarm-2 ON delay setting
E13 OFF DELAY1
Alarm-1 OFF delay setting
E14 OFF DELAY2
Alarm-2 OFF delay setting
E15 RL1 ACTION
Direction of alarm-1 relay action
E16 RL2 ACTION
Direction of alarm-2 relay action
E60 SELF CHK
Self-check result
P
ADJUST
Adjustment
*2
P01 WIRING R
Wiring resistance correction
P04 IN1 ZERO ADJ
Zero adjustment of input 1
P05 IN1 SPAN ADJ
Span adjustment of input 1
P60 SELF CHK
Self-check result
Q
TEST
Test
*2
Q10 ALM1 TEST
Forced output (alarm 1)
Q11 ALM2 TEST
Forced output (alarm 2)
Q60 SELF CHK
Self-check result
*1
The status is displayed for service personnel to see history records.
*2
The parameters are the items to be set at the factory.
8. MAINTENANCE
The product enters the operable status as soon as the power is
turned on, but requires 10 to 15 minutes of warm-up to meet the
performance requirements.
8.1 Calibration Apparatus
•
6-dial decade resistance box (YOKOGAWA 279301 or equivalent): 1
•
Digital Multimeter (YOKOGAWA 7561 or equivalent): 1
• Setting tool for adjustment (Refer to “4.2 Connecting the
Setting Tools” in this manual.)
8.2 Calibration Procedure
1.
Connect the instruments as shown in figure below.
10
11
3 2 1
4
5
6
7
8
9
11
10
8
A
B
B
3
1
4
9
7
5
2
COM
GND
ALM2 (NO)
ALM1 (NO)
COM
DMM
DMM
Alarm-2 output
RTD Input
Alarm-1 output
Power supply
L+
N–
6-dial decade
resistance
2. Produce the input signal equivalent to 0% of the input range
from the 6-dial decade resistance box to the product.
3.
Then, read the input value of Display items, “A01: INPUT1”
using the VJ77 or JHT200 and check that the input value is
within the rated accuracy range.
4. Take the same procedure for the input signal equivalent to 25,
50, 75 and 100% of the input range and check that the input
values are within the rated accuracy range.
For alarm output, check the relay action by the alarm indicator
lamp or resistance of output terminals.
● Use the setting tool (VJ77 Parameter Setting Tool or JHT200
Handy Terminal) to adjust the output signals.
User’s Manual for VJ77 [Document No.: IM 77J01J77-01E]
User’s Manual for JHT200 [Document No.: IM 77J50H01-01EN]
9. TRANSPORT AND STORAGE CONDITIONS
•
Temperature: -25 to 70°C
•
Temperature change rate: 20°C per hour or less
•
Humidity: 5 to 95%RH (no condensation)
CAUTION
Keep this product in a conductive bag when plugged
out, during transport or storage.
