High Al2 Alarm; Ack/Rest Button; Fault Alarm - GasTech GTA-4100R Operator's Manual

3. Press and hold the Ack/Reset to acknowledge the alarm and silence the panel buzzer and steady the
Alarm LED's if the alarm condition has not been cleared.
4.2.2

High AL2 Alarm

If the high alarm is latching:
If the high alarm has been configured to be latching, and the alarm has not been acknowledged, the buzzer,
LED, and relay remain active after the alarm condition has passed. These alarm indications must then be
cleared by pressing the "Ack/Reset" button on the front face of the controller, or by initiating a Global
"Ack/Reset" button on the common module.
1. Follow the established procedure for a high alarm condition. If a procedure is not in place, establish
one that is appropriate for your application.
2. When the reading returns to normal, acknowledge the alarm by pressing the Ack/Reset button to
silence the buzzer and turn off the AL2 ALARM LED.
3. Press and hold the Ack/Reset for 3 seconds to reset the alarms.
If the high alarm is non-latching:
1. Follow the established procedure for high alarms. If a procedure is not in place, establish one that is
appropriate for your application.
2. After the reading returns to normal, the GTA-4100R automatically silences the buzzer, turns off the
AL2 ALARM LED and deactivates the applicable alarm relay.
3. Press and hold the Ack/Reset to acknowledge the alarm and silence the panel buzzer and steady the
Alarm lights if the alarm condition has not been cleared.
4.2.3

Ack/Rest Button

• Pressing the Ack/Reset button will silence the panel buzzer and steady the flashing LEDs.
• Pressing and holding the Ack/Reset button for 3 seconds will Ack/Reset the alarms and relays.
• If the channel is set for non-latching the alarms and relays on that channel will automatically Ack/Reset when
the cause of the alarm is cleared.
• To Ack/Reset the alarm on a channel with latching alarms. First you have to acknowledge the alarms by
pressing the Ack/Reset once. The panel buzzer will silence and the alarm LED's will steady. Pressing and
holding the Ack/Reset for 3 seconds will clear and Ack/Reset the alarms and relays. Ack/Reset button on the
channel is for that channel only. The Ack/Reset on the common module is common to all channels and will
reset all cards.
NOTE: If the cause of the alarm is still present the channel will go back into alarm status.
4.2.4

Fault Alarm

The fault alarm is activated when the 4 to 20mA analog input from a transmitter falls below 10% of the 4mA
zero point or 200% above the 20mA full-scale set point, the programmed fault alarm set-point. This can be
caused by such factors as a drifting sensor input or a broken wire connection. When a fault alarm occurs, the
indications are as follows:
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