Flowserve MX HART Field Unit Manual de usuario descargar pdf (Pagina 20)

MX/QX HART Field Unit FCD LMENIM2340-00 – 1/14

3.2.2 Field Device Status

The Field Device Status is contained in the second data byte in a Slave-to-Master frame as a bit ﬁeld table. It indicates

the current operating status of the ﬁeld device as a whole and is not associated with the completion of any command.

Table 3.3 – Field Device Status

Bit Mask Description

0x01 Primary Variable Out of Limits – The PV is beyond its operating limit.

0x02 Non-Primary Variable Out of Limits – A device variable not mapped to PV is beyond its operating limits.

0x04

Loop Current Saturated – The loop current has reached its upper (or lower) endpoint limit and cannot increase (or

decrease) any further.

0x08 Loop Current Fixed – The loop current is being held at a ﬁxed value and is not responding to process variations.

0x10 More Status Available – More status information is available via Command 48, Read Additional Status Information.

0x20 Cold Start – A power failure or Device Reset has occurred.

0x40 Conﬁguration Changed – An operation was performed that changed the device’s conﬁguration.

0x80 Device Malfunction – The device detected a serious error or a failure that compromises device operation.

3.3 Dynamic Variables

The Limitorque HART actuator device supports the following Dynamic Variables:

Table 3.4 – Supported Dynamic Variables

Variable Code Variable Direction Physical Interface

0 PV (Primary Variable) input Analog current input – Analog Channel 0

1 SV (Secondary Variable) output None

2 TV (Tertiary Variable) output None

4 QV (Quaternary Variable) output None

3.4 Device Variables

3.4.1 Supported Device Variables

The Limitorque HART actuator device supports the following Device Variables:

Table 3.5 – Supported Device Variables

Variable

Code

Variable Direction Unit Code

Device Variable

Classiﬁcation

Device Variable

Family

Range

0 Position setpoint input % (57) Not Classiﬁed (0) Valve/Actuator (6) 0-100

1 Current position output % (57) Not Classiﬁed (0) Not Used (250) 0-100

2 Torque output % (57) Not Classiﬁed (0) Not Used (250) 0-100

3 Motor temperature output °C (32), °F (33) Temperature (64) Not Used (250) Not Limited

Compartment

temperature

output °C (32), °F (33) Temperature (64) Not Used (250) Not Limited

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 71 72

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Flowserve MX HART Field Unit Manual de usuario Pagina 20

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