3 alarms and countermeasures, Alarms and countermeasures -24 – Yokogawa EJA440E User Manual

Page 71

Advertising
background image

<4. Diagnostics>

4-24

IM 01C25T01-06EN

4.3 Alarms and Countermeasures

Table 4.5

Alarm Message Summary

Integral

indicator

HART configuration

tool display

Cause

4-20mA Output

operation during error

Countermeasure

Status

group

*

1

Diagnostic

List

group *

2

AL. 01

CAP.ERR

P sensor error *

1

Pressure Sensor

Error *

2

Sensor problem.

Outputs the signal (High

or Low) set with burnout

direction switch.

[status output: undefined]

(About the output signal,

refer to subsection 3.3.9)

Replace capsule if

the error recurs after

the transmitter is

restarted.

1

H

ar

dw

ar

e

Fa

ilu

re

CT sensor error *

1

Capsule Temperature

Sensor Error *

2

Capsule temperature

sensor problem.

Replace capsule.

Cap EEPROM error *

1

Capsule EEPROM

Error *

2

Capsule EEPROM

problem.

AL. 02

AMP.ERR

AT sensor error *

1

Amp Temp Sensor

Error *

2

Amplifier temperature

sensor problem.

Replace amplifier.

Amp EEPROM error *

1

Amp EEPROM Error

*

2

Amplifier EEPROM

problem.

CPU board error *

1

CPU Board Error *

2

Amplifier problem.

2

No device ID *

1

No Device ID *

2

No device ID is found.

Continues to operate and

output.

Replace amplifier.

2

AL. 10

PRESS

P outside limit *

1

Pressure Outside

Limit *

2

Differential pressure is

outside measurement

range limit of capsule.

When PV is Pres

Output AO upper limit or

AO Lower limit. (Refer to

subsection 3.3.1)

Check input or

replace capsule

when necessary.

3

Tr

an

sd

uc

er

S

ta

tu

s

AL. 11

ST. PRSS

SP outside limit *

1

Static Pressure

Outside Limit *

2

Static pressure exceeds

limit.

When PV is SP

Output AO upper limit or

AO Lower limit. (Refer to

subsection 3.3.1)

AL. 12

CAP.TMP

CT outside limit *

1

Cap Temp Outside

Limit *

2

Capsule temperature is

outside range (–50 to

130°C).

Continues to operate and

output.

Use heat insulation

or make lagging to

keep temperature

within range.

AL. 13

AMP.TMP

AT outside limit *

1

Amp Temp Outside

Limit *

2

Amplifier temperature

is outside range (–50 to

95°C).

AL. 30

PRS.RNG

P over range *

1

Pressure Over Range

*

2

Differential pressure

exceeds specified range.

When PV is Pres.

Output AO upper limit or

lower limit.

(Refer to subsection 3.3.1)

Check input and

range setting, and

change them as

needed.

4

AL. 31

SP. RNG

SP over range *

1

Static Pressure Over

Range *

2

Static pressure exceeds

specified range.

When PV is SP

Output AO upper limit or

lower limit.

(Refer to subsection 3.3.1)

AL. 35

P.HI

P high alarm *

1

Pressure High Alarm *

2

Input pressure exceeds

specified threshold.

Continues to operate and

output.

Check input.

5

AL. 36

P.LO

P low alarm *

1

Pressure Low Alarm *

2

AL. 37

SP.HI

SP high alarm *

1

Static Pressure High

Alarm *

2

Input static pressure

exceeds specified

threshold.

AL. 38

SP.LO

SP low alarm *

1

Static Pressure Low

Alarm *

2

*1: DD and DTM (excluding EJX HART 5 DTM based on FDT1.2)

*2: EJX HART 5 DTM based on FDT1.2

*3: Available only for HART 7

Advertising
This manual is related to the following products: