Samson S2000 Betriebsanleitung PDF herunterladen (Seite 65)

7.6.4 SUb substitute calibration

A complete initialization procedure takes

several minutes and requires the valve to

move through its entire travel range several

times. This initialization mode, however, is

an emergency mode, in which the control

parameters are estimated and not deter

-

mined by an initialization procedure. As a

result, a high level of accuracy cannot be

expected. You should always select a differ

-

ent initialization mode if the plant allows it.

The

SUb initialization mode is used to re

-

place a positioner while the process is run

-

ning. For this purpose, the control valve is

usually fixed mechanically in a certain posi

-

tion, or pneumatically by means of a pres-

sure signal which is routed to the actuator

externally. The blocking position ensures

that the plant continues to operate with this

valve position.

By entering the blocking position (Code

35),

closing direction (Code 34), pin position

(Code 4), nominal range (Code 5) and di-

rection of action (Code 7), the positioner

can calculate the positioner configuration.

NOTICE

Perform a reset before re-initializing the

positioner if the substitute positioner has al

-

ready been initialized. Refer to section 7.8.

Enable configuration:

Note: If no settings are entered within

120 seconds, the enabled configuration

function becomes invalid.

Default No

Turn

→

Code 3, display: No

Press , Code 3 blinks

Turn

→

YES

Press , display

Enter the pin position and nominal range:

Default No

Nominal range

(locked with Code 4 = No)

Turn

→

Code 4

Press , Code 4 blinks

Turn

→

Pin position on lever (see rele

-

vant section on attachment)

Press .

Turn

→

Code

5

Press , Code 5 blinks

Turn

→

Nominal travel/angle

Press .

EB 8384-4 EN 65

Start-up – Settings

mm

mm

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 123 124

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