Omron EJ1 User Manual

82
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 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. With analog
inputs, the decimal point position is determined by the Decimal Point Position
parameter setting. 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) 1 to 9999 EU 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 Hysteresi
s

Omron EJ1 Specifications

General

Brand	Omron
Model	EJ1
Category	Temperature Controller
Language	English