Alarm Latch; Close In Alarm/Open In Alarm; Alarm Sp Selection - Omron E5AR-T User Manual

Section 5 Functions and Operations

■ Alarm Latch

Alarm 1 Latch
1 a1lt
Alarm 4 latch
1 a4lt
off
l.3
off
l.3

■ Close in Alarm/Open in Alarm

Auxiliary Output 1 Open in Alarm
1 sb1n
Auxiliary Output 1 Open in Alarm
sb4n
1
n-o
l.3
n-o
l.3

■ Alarm SP Selection

5-26
• Conditions B:
When power is turned ON
• The Standby Sequence Reset parameter is used for all of Alarms 1
to 4.
• The default setting is 0 (Conditions A).
• The alarm latch is used to make an alarm output that has turned ON
remain ON until the power is turned OFF, regardless of the temper-
ature.
• The alarm latch can be canceled by turning the power OFF or by
using a communications command.
• An alarm latch can be set separately for each alarm in the Alarm 1
to 4 Latch parameters.
• The default setting is 0 (OFF).
• When the Auxiliary Output Open in Alarm parameter is set to "Close
in Alarm," the alarm output state is output as is. When it is set to
"Open in Alarm," the alarm output state is inverted before being
output.
• "Close in Alarm" or "Open in Alarm" can be set separately for each
auxiliary output in the Auxiliary Output 1 to 10 Close in Alarm
parameters.
• The default setting is n-o (Close in Alarm).
Parameter Auxiliary
setting output function
ON
Close in Alarm:
n-o
OFF
ON
Open in Alarm:
n-c
OFF
• The auxiliary outputs are OFF (open) while the power is turned OFF.
Also, the auxiliary outputs require approximately 2 seconds after the
power is turned ON before they are activated.
The set point that triggers a deviation alarm during ramp operation can
be set to either the present SP or the target SP.
Auxiliary Operation
output indicator
ON ON
OFF OFF
OFF ON
ON OFF