Relay Setup; Assigning Relay 1 Functions; Relay Option List - Siemens SITRANS FUH1010PVDX Operating Instructions Manual

Section 5
5.9.2

RELAY SETUP

Use this menu to assign a function to channel relays. The FUH1010PVX supports 2 types of relay out-
puts: Alarm Relay and Pulse Relay. Alarm Relay outputs operate in "fail-safe" mode. The relay(s) are
energized under normal conditions - an alarm condition causes the relay(s) to de-energize until alarm
clears. The Pulse Relay output supports totalizer and batch relay functions. The output pulse width is
approximately 200 ms; maximum activation rate is 2.5 pulses per second. If totalizer pulses exceed this
rate, excess pulses are stored in overflow register. This allows the relay to "catch up" when flow de-
creases enough.
NOTE: Using the <F1> key Totalizer clear command also clears all channel totalizers plus the
overflow register described in the last paragraph. The Reset Totalizer [Yes/No] menu
command will also accomplish this.

Assigning Relay 1 Functions

The FUH1010PVX provides one alarm relay. Please refer to the appropriate Installation Drawing in Ap-
pendix B for wiring details. Relays respond to any of the alarm conditions/data functions included on the
[Relay 1] option list.
Not Used
Power Off
S High LiquIdent
S Low LiquIdent
S High Viscosity
S Low Viscosity
S Hi Temperature
S Low Temperature
S High Flow
S Low Flow
S Flow Alarm
S Fault Alarm
S Spacing
S Empty
S Aeration %
S Interface
S Reverse Flow
S BatchTot
S Pos Total
S Neg Total
S Fltwarn
S Soft Fault
S Pig Detect

Relay Option List

Not Active
Power Off alarm occurs when power fails
High LiquIdent value relay trip-point.
Low LiquIdent value relay trip-point.
High liquid Viscosity value relay trip-point.
Low liquid Viscosity value relay trip-point.
High temperature value relay trip-point.
Low temperature value relay trip-point.
High Flow trip-point exceeded.
Low Flow trip-point exceeded.
System flow rate exceeds or falls below low flow setpoints.
System loses receive signal (all paths in fault).
Transducer spacing needs adjusting.
Empty pipe alarm.
Aeration percentage alarm trip-point exceeded.
Interface setpoint exceeded.
Flow is in negative direction.
Batch/Sample total advances.
Positive total volume advances 1 digit.
Negative total volume advances 1 digit.
System fault warning.
Fault condition - memory mode active.
Pig detection value relay trip-point exceeded.
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