APC AXFA11G user manual F14 SO1/2 Active Mode Setting of the active mode for status output

6. PARAMETER DESCRIPTION

[F12: SI1 Function] Setting of the funtion for the SI1 status input terminal This parameter sets the function for the SI1 (status input 1) terminal.

Setting	Function	Description
No Function	No input function
		Based on the external status input, the instantaneous flow rate
		indication is forcibly set to 0% (i.e., 4 mA), and both totalization
0% Signal Lock	0% signal lock via external status	and pulse outputs are halted. This setting has precedence over
	input.	the output signal whenever an alarm occurs. When 0% signal lock
		is canceled, the instantaneous flow rate is restored in accordance
		with the time constant originally set using B20/C11:Flow Damping.
	Automatic zero adjustment via	Automatic zero adjustment is carried out in response to
Ext Auto Zero		external status input. For more details regarding automatic
	external status input
		zero adjustment, refer to Chapter 9: Operation.
Ext Ttl Preset	Forward totalization preset via	The totalization display value is preset or reset to zero in
		accordance with the external status input. The preset value is
	external status input
		determined using D21: Ttl Set Val Lower and D22: Ttl Set
	Reverse totalization preset via	Val Upper.
Ext Rev Ttl Set		In case that “Start” is selected for D20: Total Execution , the
	external status input
		count for totalization starts from the preset value.
Ext 2 Ranges	2 ranges switching via external
	status input
Ext 3 Ranges	3 ranges switching via external	This function allows switching of up to 4 ranges in
	status input (Note 1)	response to status input for a single direction only.
Ext 4 Ranges	4 ranges switching via external
	status input (Note 1)

Note 1: When these functions are selected, two terminals become necessary for status input.

Accordingly, the setting for F12: SI1 Function is automatically adopted as the setting for F13: SI2 Function.

(Setting of these functions is not possible using F13: SI2 Function.)

Note 2: Function-specific SI1 and SI2 operations

Operations are performed in accordance with the content of the following table when the active mode has been set to "Short Active" using F15: SI1/2 Active Mode.

Operating patterns are reversed when the active mode has been set to "Open Active" using this parameter.

T0625.EPS

Selected function	Condition of SI1 or SI2
	Open	Short
0% Signal Lock	Normal	Signal lock status
Ext Auto Zero	Normal	Start of automatic zero adjustment
Ext Ttl Preset	Normal	Forward totalization preset
Ext Rev Ttl Set	Normal	Reverse totalization preset

Note: For “Ext 2 Ranges,” “Ext 3 Ranges,” and “Ext 4 Ranges,” see the Multiple

ranges setting section.

T0626.EPS

[F13: SI2 Function] Setting of the function for the SI2 status input terminal

This parameter sets the function for the SI2 (status input 2) terminal. Selectable functions are the same as for F12: SI1 Function; however, the selection of Ext 3 Ranges and Ext 4 Ranges is not possible for F13.

[F14: SO1/2 Active Mode] Setting of the active mode for status output

This parameter sets the active mode for the terminals SO1 and SO2. Active modes cannot be set individually for these two terminals.

Setting	Function
Closed (On) Act	Status output becomes "Closed (On)" when an
	event occurs.
Open (Off) Act	Status output becomes "Open (Off)" when an
	event occurs.
	T0627.EPS

Example: When the “Total Switch” function is selected for SO1 or SO2

Closed(On)

Open(Off)

Equal or above setting value Equal or above setting value

Closed (On) Active	Open (Off) Active
	F0605.EPS

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