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vfs page: Precision Digital Corporation

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Vigilante Annunciator Alarm Sequence

FULL SEQUENCE DESCRIPTIONS

The following section describes the operation of the various sequences available in the Vigilante® alarm annunciator.

Features

Acknowledge Pushbutton: Momentary alarms will not clear until the alarmed channels have been acknowledged with the ACK pushbutton. This will also reset the first out indication. Used in all ISA sequences.

Automatic Reset: Acknowledged momentary alarms will clear automatically when the inputs return to normal. The automatic reset is present in all automatic (A) sequences.

First-Out Indication: The sequence provides a distinct visual indication for the first channel to alarm.

First-Out Reset Pushbutton: Resets the first-out display and assigns the first-out channel to display as a subsequent alarm without any other changes to the sequence. The next alarm input will be a new first-out alarm. Used only in sequence F3A.

Reset Pushbutton: Acknowledged momentary alarms will only clear when reset with the RESET pushbutton. Used in any manual reset (M) sequence.

Sequence Condition Descriptions

The following terms are used in describing the sequence behavior in the following tables:

Alert: The input is in alarm state, and the channel has not been acknowledged with the ACK pushbutton.

Acknowledge: The alarm state is acknowledged with the ACK pushbutton. This will restart the first-out indication.

First Out Reset (F3A Only): The RESET pushbutton is used to reset the first-out indication only.

Normal: Inputs are in the normal state.

LED Condition Descriptions

1st Pt: Indicates the behavior of the first-out channel only.

Next Pt: The behavior of subsequent alarm channels; channels that enter the alarm state after the first-out alarm.

FISA SEQUENCE A

Acknowledge Pushbutton and Automatic Reset

Momentary Alarm

Condition	LED	Horn
Normal	Off	Off
Alert	Flash	On
Normal	Flash	On
ACK Pushbutton
Acknowledge	Off	Off

Maintained Alarm

Condition	LED	Horn
Normal	Off	Off
Alert	Flash	On
ACK Pushbutton
Acknowledge	Steady	Off
Normal	Off	Off

Sequence A Switch Positions

Vigilante II Alarm Annunciator Sequence A Switch Positions

Sequence A Flowchart

Vigilante II Alarm Annunciators Sequence A Flowchart

Relay Operation

For complete details on relay function, see page 24 in the instruction manual

Relay 1: Operation
Relay 1 enters alarm state when there is a new alarm. This relay will clear when the alarms are acknowledged.

Relay 2: Operation
Relay 2 enters alarm state when any channel displays in alarm state. This relay will clear when all indication LEDs are cleared.

ISA SEQUENCE F2A

First-Out Indication with Acknowledge Pushbutton and Automatic Reset

Momentary Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
Normal	Flash	Steady	On
ACK Pushbutton
Acknowledge	Off	Off	Off

Maintained Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
Normal	Off	Off	Off

Sequence F2A Switch Positions

Vigilante II Alarm Annunciators Sequence F2A Flowchart

Sequence F2A Flowchart

Vigilante II Annunciators Sequence F2A Flowchart

ISA SEQUENCE F1A

First-Out Indication with Acknowledge Pushbutton, No Lock-In of Subsequent Alarms, and Automatic Reset

Momentary Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
Normal	Flash	Off	On
ACK Pushbutton
Acknowledge	Off	Off	Off

Maintained Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
Normal	Off	Off	Off

Sequence F1A Switch Positions

Vigilante II Annunciators Sequence F1A Switch Positions

Sequence F1A Flowchart

Vigilante II Annunciators Sequence F1A Flowchart

ISA SEQUENCE F3A

First-Out Indication with Acknowledge Pushbutton, Automatic Reset, and First-Out Reset Pushbutton

Momentary Alarm (RESET before ACK)

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Intermittent Flash	Fast Flash	On
Normal	Intermittent Flash	Fast Flash	On
RESET Pushbutton
1st Out Reset	Fast Flash	Fast Flash	On
ACK Pushbutton
Acknowledge	Off	Off	Off

Momentary Alarm (ACK before RESET)

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Intermittent Flash	Fast Flash	On
Normal	Intermittent Flash	Fast Flash	On
ACK Pushbutton
Acknowledge	Slow Flash	Off	Off
RESET Pushbutton
Reset	Off	Off	Off

Maintained Alarm (RESET before ACK)

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Intermittent Flash	Fast Flash	On
RESET Pushbutton
1st Out Reset	Fast Flash	Fast Flash	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
Normal	Off	Off	Off

Maintained Alarm (ACK before RESET)

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Intermittent Flash	Fast Flash	On
ACK Pushbutton
Acknowledge	Slow Flash	Steady	Off
RESET Pushbutton
1st Out Reset	Steady	Steady	Off
Normal	Off	Off	Off

Sequence F3A Switch Positions

Vigilante II Alarm Annunciators Sequence F3A Switch Positions

Sequence F3A Flowchart

Vigilante II Annunciators Sequence F3A Flowchart

INPUT FOLLOWER INDICATION

Simple Indication
Condition	LED	Horn
Normal	Off	Off
Alert	Steady	On
Normal	Off	Off

Vigilante II Alarm Annunciators Input Follower Indication

ISA SEQUENCE M

Acknowledge and Reset Pushbuttons

Momentary Alarm

Condition	LED	Horn
Normal	Off	Off
Alert	Flash	On
Normal	Flash	On
ACK Pushbutton
Acknowledge	Steady	Off
RESET Pushbutton
Reset	Off	Off

Maintained Alarm

Condition	LED	Horn
Normal	Off	Off
Alert	Flash	On
ACK Pushbutton
Acknowledge	Steady	Off
Normal	Steady	Off
RESET Pushbutton
Normal	Off	Off

Sequence M Switch Positions

Vigilante II Alarm Annunciators Sequence M Switch Positions

Sequence M Switch Flowchart

Vigilante II Alarm Annunciators Sequence M Flowchart

ISA Sequence F1M

First-Out Indication with Acknowledge and Reset Pushbuttons, and No-Lock-In of Subsequent Alarms

Momentary Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
Normal	Flash	Steady	On
RESET Pushbutton
Reset	Flash	Off	On
ACK Pushbutton
Acknowledge	Steady	Off	Off
RESET Pushbutton
Normal	Off	Off	Off

Maintained Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
RESET Pushbutton
Alert	Flash	Steady	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
Normal	Steady	Steady	Off
RESET Pushbutton
Normal	Off	Off	Off

Sequence F1M Switch Positions

Vigilante II Alarm Annunciators Sequence F1M Switch Positions

Sequence F1M Flowchart

Vigilante II Alarm Annunciators Sequence F1M Flowchart

ISA SEQUENCE F2M

First-Out Indication with Acknowledge and Reset Pushbuttons

Momentary Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
Normal	Flash	Steady	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
RESET Pushbutton
Reset	Off	Off	Off

Maintained Alarm

Condition	LED		Horn
	1st Pt	Next Pt
Normal	Off	Off	Off
Alert	Flash	Steady	On
ACK Pushbutton
Acknowledge	Steady	Steady	Off
Normal	Steady	Steady	Off
RESET Pushbutton
Normal	Off	Off	Off

Sequence F2M Switch Positions

Vigilante II Alarm Annunciators Sequence F2M Switch Positions

Sequence F2M Flowchart

Vigilante II Alarm Annunciators Sequence F2M Flowchart