Manual

Measurement Channels and Alarms
IM 04L21B01-01EN
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App
Index
• Basic setting > Indicator
You can choose to make the alarm displays behave in the following ways.
Settings Description
Nonhold Clears the alarm indication when the alarm condition is released (returns to
normal condition).
Hold Holds the alarm indication until an alarm acknowledge operation is performed.
• Internal Switch > AND
Select the internal switches that are to operate using AND logic. Set the range
of internal switches (from the rst internal switch) to take the AND logic. All
subsequent switches will be set to OR logic.
• Relay > AND
Select the relays that are to operate using AND logic. Set the range of relays (from
the rst alarm relay) to take the AND logic. All subsequent relays will be set to OR
logic. Available settings are None, I01 (I01 only), I01-I02 (I01 and I02), I01-I03 (I01
to I03), etc. Only alarm output relays that are installed are valid.
Note
When reflash is turned ON, the operation of the first three output relays is fixed to OR logic.
Specifying AND produces no effect.
• Relay > Action
Select whether the alarm output relay is energized or de-energized when an alarm
occurs. The setting applies to all alarm output relays.
• Relay > Hold
You can choose to make the alarm output relays behave in the following ways. This
setting applies to all relays.
Settings Description
Nonhold Turns the output relay OFF when the alarm condition is released (returns to
normal condition).
Hold Holds the output relay at ON until an alarm acknowledge operation is performed.
Note
When reflash is turned ON, the operation of the first three output relays is set to nonhold.
Specifying Hold produces no effect.
• Relay > Relay Action on Ack
You can select the relay output status that is enabled after the AlarmACK operation
from the following two settings.
Settings Description
Normal The relay is deactivated when the alarm ACK operation is executed. If the
condition for activating the alarm output relay is met in the next scan interval, the
relay is activated.
This operation is valid only when the alarm output relay is set to Hold.
Reset The relay is deactivated when the alarm ACK operation is executed. If a new
condition for activating the alarm output relay is met, the relay is activated.
3.5 Setting the Auxiliary Alarm Function