Wika IPT-11 Manuel d'utilisateur télécharger pdf (Page 20)

l In the menu item "Failure mode" under "Current output", the

parameters "Hold value" and "20.5 mA" are blocked

l In the menu item "HART mode", the function "Multidrop" is blocked

Note:

For such applications, it is absolutely necessary to take note of "Safety

Manual".

HART oﬀers standard and multidrop mode.

The mode standard with the ﬁxed address 0 means output of the

measured value as 4 … 20 mA signal.

In Multidrop mode, up to 15 sensors can be operated on one two-wire

cable. An address between 1 and 126 must be assigned to each

sensor.

In this menu item you determine the HART mode and enter the

address for multidrop.

HART mode

Standard

Address 0

The default setting is standard with address 0.

5.4 Special functions - Proﬁbus PA

The Proﬁbus PA special functions are brieﬂy described in this

paragraph. The respective range of functions of the indicating and

adjustment module is determined by the sensor and the sensor

software revision.

Menu section, basic adjustment

Level and pressure sensors operate as slaves on the Proﬁbus PA. To

be identiﬁed as a bus participant, each sensor must have a unique

address. Each instrument is delivered with address 126. With this

address, it can at ﬁrst be connected to an existing bus. However, the

address must be changed. This can be done in this menu item.

Sensor address

126

The 4 … 20 mA signal of the HART sensor is switched oﬀ. The sensor

consumes a constant current of 4 mA. The measuring signal is transmitted

exclusively as digital HART signal.

HART mode

Introduction

Sensor address

20 Indicating and adjustment module for IPT-1* sensors

5 Set up

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Wika IPT-11 Manuel d'utilisateur Page 20