Omron EJ1G, User Manual

Page: 105 / 237

84
Setting Alarm Specifications
Section 5-4
(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.
5-4-2 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 (1) Refer to 5-7-1 Bank Function for details on banks.
(2) The decimal point position is the same as set for the Decimal Point Posi-
tion B parameter.
5-4-3 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. With analog
Variable
type
Parameter name Setting range Default
D0/90 Alarm Value 1 to 3 (Bank)
−
1999 to 9999 EU
(See note 2.)
0
Conditions for use The alarm type must not be set to an upper and lower limit
alarm.
Variable type Parameter name Setting range Default
D0/90 Alarm Upper Limit Value 1 to 3 (Bank)
−
1999 to 9999 EU
(See note 2.)
0
Alarm Lower Limit Value 1 to 3 (Bank)
−
1999 to 9999 EU
(See note 2.)
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 999.9
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