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8 releasing the alarm output (alarm ack operation) – Yokogawa Removable Chassis DX1000N User Manual

Page 109

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Measurement Channels and

Alarms

IM 04L41B01-01E

3-15

1

2

3

4

5

6

7

8

9

10

11

12

App

Index

3.8 Releasing the Alarm Output (Alarm ACK

Operation)

This operation is valid when the DX is set as follows:
DX with release number 3 or later

• When

Annunciator mode is set to On in the basic setting mode.

• When

Annunciator mode is set to Off, the operation is the same as described for DX

with release number 2 below.

DX with release number 2

• When

Indicator is set to Hold in the basic setting mode.

• When

Relay Hold is set to Hold and Relay action on ACK is set to Normal in the

basic setting mode.

• When

Relay action on ACK is set to Reset in the basic setting mode.

DX before release number 2

• When

Indicator is set to Hold in the basic setting mode.

• When

Relay Hold is set to Hold in the basic setting mode.

For the procedure to set the relay action, see section 3.5.

On a DX with advanced security (/AS1 option; release numbers 4 and later), you can
perform separate alarm ACK operations on each alarm.
For information about individual alarm ACK operations, see section 4.4.

Procedure

This operation is carried out after an alarm occurs.

1.

In the operation mode, press

FUNC.

The FUNC key menu appears.

2.

Press the

AlarmACK soft key.

The alarm output is released.

Explanation

• Alarm Acknowledge (ACK) Operation

When an alarm acknowledge operation is carried out, the indications and outputs

(relays and switches) of all activated alarms are cleared.

In annunciator mode (release number 3 or later), the alarm indications and outputs

follow the annunciator sequence.

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