Yokogawa DAQWORX Manual de usuario descargar pdf (Pagina 168)

6-41

IM WX104-01E

Index

Configuring the DX1000/DX2000

Internal Switch AND

Select the internal switches that are to operate using AND logic. Set the range of internal

switches (from the first 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

first 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.

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. When you use the alarm annunciator function (release

number 3 or later), the setting follows the annunciator sequence.

Settings Description

Unhold 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 fixed to OR logic.

Specifying AND produces no effect.

Relay Action on ACK

You can use this setting on DX firmware version 2.0x or later. When you use the alarm

annunciator function (release number 3 or later), the setting follows the annunciator

sequence.

Settings Description

Normal The relay output 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 output is activated.

This operation is valid only when the alarm output relay is set to [Hold].

Reset The relay output is deactivated when the alarm ACK operation is executed. If a

new condition for activating the alarm output relay, the relay is activated.

Note

When reflash is turned ON, the operation of the first three output relays is set to nonhold.

Specifying Hold produces no effect.

Measure channel High/Low

Sets the hysteresis width of the alarm occurrence/release of the high/low limit alarm

specified on measurement channels.

Selectable range: 0.0% to 5.0% of the span or scaling width

Measure channel Delta High/Low

Sets the hysteresis width of the alarm occurrence/release of the difference high/low limit

alarm specified on measurement channels.

Selectable range: 0.0% to 5.0% of the span

Math channel High/Low, Ext channel High/Low

Sets the hysteresis width of the alarm occurrence/release of the high/low limit alarm

specified on computation and external input channels.

Selectable range: 0.0% to 5.0% of the measurement span

6.5 Entering Basic Settings

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