A5E33329501
SITRANS LUT400 (HART) – OPERATING INSTRUCTIONS
Page 67
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When totalizing OCM flow:
The flow totalizers continue to operate during a fail-safe condition, thus the external
totalizer relay will also continue to operate.
External Sampler relay
The External Sampler relay operates the same as the External Totalizer relay described above.
The periodic timeout-click will also continue to occur in fail-safe.
Communications relays
Relays controlled by communications (HART) are not affected by a fail-safe condition.
Relay states
The relays on the SITRANS LUT400 are programmable, allowing for many control
schemes.
Relay output logic
Affects relay reaction. Reverses the logic (normally-open to normally-closed or vice
versa). Relay logic can be modified separately for alarms, and controls. (Logic for pumps
cannot be reversed.)
Relay related parameters
Some parameters affect how relays react during normal conditions:
Setpoints
When a setpoint is reached, the corresponding action is taken. The setpoint can be an
ON or OFF setpoint related to a process variable, or a timed setpoint based on interval
and duration.
Relay Types
Relay 1 – NO / NC (Form C)
Relay 2,3 – NO (Form A)
Function
Parameter
Summary of Contents for SITRANS LUT400
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Page 12: ...Controllori ad ultrasuoni Manuale d istruzioni 08 2012 SITRANS LUT400 HART SITRANS ...
Page 51: ...Pagina 32 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Collegamento Note ...
Page 81: ...Pagina 62 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML1998MV51 mmmmm Messa in esercizio Note ...
Page 151: ...Pagina 132 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Funzionamento AMS Note ...
Page 247: ...Pagina 228 SITRANS LUT400 HART MANUALE D ISTRUZIONI 7ML19985MV51 mmmmm Manutenzione Note ...
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Page 303: ...Note Notes fm Page 2 Thursday October 11 2001 8 48 AM ...
Page 304: ...IQ300IX fm Page 5 Tuesday October 2 2001 1 43 PM ...
Page 306: ...Operating Instructions SITRANS LUT400 HART 12 2014 Edition Ultrasonic Controllers ...
Page 319: ...Page 6 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Safety Notes Notes ...
Page 345: ...Page 32 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Connecting Notes ...
Page 375: ...Page 62 SITRANS LUT400 HART OPERATING INSTRUCTIONS 7ML1998MV01 mmmmm Commissioning Notes ...
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Page 543: ...Page 230 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Maintenance Notes ...
Page 561: ...Page 248 SITRANS LUT400 HART OPERATING INSTRUCTIONS A5E33329501 mmmmm Troubleshooting Notes ...
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