Yokogawa ADMAG AXR Uživatelský manuál stáhnout pdf (Strana 81)

<6. PARAMETER DESCRIPTION>

6-33

IM 01E30D01-01EN

NOTE

• If the setting value for the low limit is not less

than the high limit value (as set using J12: 4-

20mA High Lmt), the setting alarm “54: 4-20

Lmt Err” will be displayed.

• This parameter has no effect on pulse output

or the totalization function.

[J12: 4-20mA High Lmt] Setting of the high limit for

current output

This parameter is used to restrict high current

portions of current (4 to 20mA) output, and it is

initially set to 103.13%. Setting should be performed

when a lower value is required for the higher limit.

heindicationsoftheinstantaneousowrates(%,

Actualinstantaneousowrate,mA,Bargraph)on

the display unit are the same action.

Example: Situation where high limit is set to 90%

F0610.ai

4mA

Output

Input

18.4mA(90%)

NOTE

When the high limit works, the display indicates

83:Fix Cur Wng as the warning.

NOTE

The set current output at each alarm function

becomes higher priority than set value at J12

when the alarm occurs.

The priority of this output is described below.

The process alarms and setting alarms are

available when “Yes” were selected at G26,

G27, G28, G29 and/or G31.

System alarm (G20) >

Process alarm (G25) >

Setting alarm (G31) >

High limit (J12)

Example: “21.6mA or more” is set for G25

The current output is 21.6mA or more

in spite of setting any value at J12.

[J15: Pulse Special Mode] Selection of the pulse

special mode

This parameter is used to set the pulse mode only

instead of using current output.

Setting Function

Normal Select this parameter when the current output or

Simultaneous Current-Pulse output is used.

Pulse Only Select this parameter when the pulse output as

pulse special mode is used only.

hecurrentoutputisxedat12mA.

NOTE

The pulse output function does not work unless

setting the “Pulse Output” at F10:DO Function

when the “Pulse only” is selected at J15:Pulse

Special Mode.

[J20: Flow Direction] S

ettingoftheowdirection

Upon shipment from the manufacturing plant,

thesystemissetupsuchthatowinthesame

direction, as shown by the direction of the arrow

markontheowtube,willbemeasuredasforward

ow;however,thisparametercanbeusedtoset

“Reverse”sothatowintheoppositedirectionto

the arrow mark will be treated as forward.

Note: This function does not apply to measurement in both the

forward and reverse directions, although this can be setup

using by selecting “Fwd/Rev Rngs” from either F10: DO

Function.

Setting Function

Forward Forward direction corresponds with arrow mark.

Reverse Forward direction is opposite to arrow mark.

[J21: Rate Limit] Setting of the rate limit value

● This parameter is used in situations where

sudden noise cannot be eliminated by

increasing the damping time constant.

● In situations where step signals or sudden

noise signals caused by slurries or the like

are entered, this parameter is used to set the

standard for determining whether an input

correspondstoaowmeasurementornoise.

Specically,thisdeterminationismadeusing

upper and lower rate limits and using the dead

time.

● Rate limit values are set using a percentage of

the smallest range. The range of deviation per

one calculation cycle should be input.

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