APC AXFA11G user manual Example, G22 4-20mA Burn Out Display of the current, ClosedOn OpenOff

Example

Closed(On)

Open(Off)

Alarm occurs	Alarm occurs
Closed (On) Active	Open (Off) Active
	F0614.EPS

[G21: 4-20mA Alarm Out] Setting of the current output during an alarm occurrence

This parameter can be used to set up the current output during alarm occurrence in advance.

Setting	Function
2.4mA or Less	Fixed at 2.4 mA or less
4.0mA	Fixed at 4 mA
Hold	Fixed current value when an alarm occured.
21.6mA or More	Fixed at 21.6 mA or more
	T0632.EPS

[G22: 4-20mA Burn Out] Display of the current

output during a CPU failure

This parameter displays the current output direction for a CPU failure (i.e., burnout). Note that communication will not be possible if such a failure occurs.

With the standard specification, this is set to High and 25mA is output when a failure occurs. Low is setup for optional code C1, and in such a case, 0mA is output when a failure occurs.

NOTE

The current output direction for a CPU failure (i.e., burnout) can be changed. Refer to selec- tion 10.2.1: Setting of Burnout Switch.

[G30: Alm-Setting]Alarm recognition of “Setting Alarm”

This parameter specifies whether the setting alarm will be recognized as an alarm.

Setting	Function
No	Not recognized as an alarm
Yes	Recognized as an alarm

T0633.EPS

[G31: Alm-Sig Over] Alarm recognition of “Signal Overflow Alarm”

This parameter specifies whether the signal overflow in process alarms will be recognized as an alarm. A signal overflow occur when there is an error in the input signal.

	6. PARAMETER DESCRIPTION
Setting	Function
No	Not recognized as an alarm
Yes	Recognized as an alarm
	T0634.EPS

[G32: Alm-Emp Pipe] Alarm recognition of “Empty Pipe Alarm”

This parameter specifies whether the empty pipe (flowtube is not filled with fluid) in process alarms will be recognized as an alarm.

Setting	Function
No	Not recognized as an alarm
Yes	Recognized as an alarm

T0635.EPS

[G33: Alm-HH/LL]Alarm recognition of “HH/LL Alarm”

(Refer to the descriptions of G12 and G13 for more details regarding HH and LL alarms.)

This parameter specifies whether HH/LL alarm in process alarms will be recognized as an alarm.

Setting	Function
No	Not recognized as an alarm
Yes	Recognized as an alarm

T0636.EPS

NOTE

To set “HH/LL Alarm” as an alarm, it is necessary to set “HH/LL Alarm” according toF10: SO1 Function

or F11: SO2 Function, and set G12: Low Low

Alarm or G13: High High Alarm as well.

[G34: Alm-Adhesion]Alarm recognition of “Adhe- sion Alarm”

This parameter specifies whether the electrode adhe- sion alarm in process alarms will be recognized as an alarm.

Setting	Function
No	Not recognized as an alarm
Yes	Recognized as an alarm

T0636-1.EPS

NOTE

The AXFA11 has three different types of alarm (i.e., system alarms, process alarms and setting alarms). For setting alarms and process alarms, settings are made with G30, G31, G32, G33 and G34 to specify whether these will be recognized as an alarm.

Refer to Section 6.5: Alarm Functions for more details regarding the content of each alarm and the effect of alarm recognition on output.

6-28 IM 01E20C01-01E