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Positioner 1067, 4 operation – Burkert Type 1067 User Manual

Page 85

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POSITIONER 1067

E-33-

4 OPERATION

X-LIMIT

(factory setting: XMIN = 0%, XMAX = 100%): Stroke limitation.

This additional function enables the (physical) stroke to be limited to a given MIN and MAX percentage
value (Fig. 36). In the AUTOMATIC mode the stroke range of the limited stroke is then set to equal
100%. In the MANUAL mode, on the other hand, the physical stroke is displayed. (It should therefore
be noted that a limited stroke will be displayed differently in the AUTOMATIC and MANUAL modes).

Fig. 36 Stroke limitation

Limited plug
travel (%)

Limited plug
travel (%)

Physical plug
travel (%)

Unlimited plug
travel (%)

Setting range:
XMIN:

0 ... 50 % of the total stroke,

XMAX:

50 ... 100 % of the total stroke.

The minimum distance between XMIN and XMAX is 50%.

X-TIME

(factory setting: OPN FAST, CLS FAST): Setting speed limitation

Options:

OPN FAST

(open fast): Opening of the control valve happens with maximal control speed.

OPN SLOW

(open slow): The maximum setting speed of the control valve is limited during

opening.
CLS FAST

(close fast): Closing of the control valve happens with maximal control speed.

CLS SLOW

(close slow): The maximum setting speed is limited when the control valve is

closing.

PCONTRL

(process control): Process controller configuration

SETPOINT

(factory setting: EXTERNAL): Preset desired value.

INTERN:

Desired value can be input using the arrow keys (see § 4.4.2).

EXTERN:

Desired value is preset via the standard signal input.

PARAM:

Set parameters for process controller (PID controller)

KP:

(Proportional correction value or amplification)

Range of settings: 0...99.99 (factory setting: 1.00)

TN:

(reset time)

Range of settings: 0.5...999.9 (factory setting: 999.9)

Setpoint (mA)