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87
Setting Alarm Specifications
Section 4-4
(4) Set value: 5, Upper and lower-limit with standby sequence
Note
For the above upper and lower-limit alarm:
• In cases 1 and 2 above, the alarm is always OFF if the hystere-
sis overlaps the upper and lower limits.
• In case 3, the alarm is always OFF.
(5) Set value: 5, Upper and lower-limit with standby sequence
• The alarm is always OFF when the hysteresis overlaps the up-
per and lower limits.
4-4-2
Alarm Value
Alarm values are indicated by “X” in the table on the previous page. When the
upper and lower limits are set independently, “H” is displayed for upper limit
values, and “L” is displayed for lower limit values.
Note
The decimal point position is determined by the sensor selection.
Refer to
4-7-1 Bank Function
for details on banks.
4-4-3
Alarm Hysteresis
• The hysteresis of alarm outputs when alarms are switched ON/OFF can
be set as follows:
• Alarm hysteresis can be set separately for each alarm.
Note
This parameter can be set only when operation is stopped.
The decimal point position is determined by the sensor selection. In this case,
however, the 0 (****) decimal point position setting will be treated as setting 1
(***.*).
Variable
type
Parameter name
Setting range
Default
D0/90
Alarm Value 1 to 3
(BANK)
−
1999 to 9999 EU 0
Conditions for use
The alarm type must not be set to an upper and lower limit
alarm, or to an LBA.
Variable type
Parameter name
Setting range
Default
D0/90
Alarm Upper Limit Value 1 to 3 (BANK)
−
1999 to 9999 EU 0
Alarm Lower Limit Value 1 to 3 (BANK)
−
1999 to 9999 EU 0
Conditions for use
The alarm type must be set to an upper and lower limit alarm,
upper and lower limit range alarm, or upper and lower limit
alarm with standby sequence.
Variable type
Parameter name
Setting range Default
E3/A3
Alarm 1 to 3 Hysteresis
(Channel) 0.1 to 999.2
EU
0.2
Conditions for use
The alarm type must not be set to 0.
Alarm Hysteresis
Alarm value
Upper-limit alarm
OFF
ON
Alarm value
Lower-limit alarm
OFF
ON
Alarm Hysteresis
Summary of Contents for EJ1 EtherCAT
Page 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Page 3: ...iv ...
Page 19: ...xx ...
Page 213: ...188 Detailed Description of Services Section 6 4 ...
Page 227: ...202 Detailed Description of Services Section 7 5 ...
Page 303: ...278 Index ...
Page 305: ......