Configuration Information
3500/42 Operation and Maintenance
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Clamp Value
The value that a proportional value goes to when that channel or proportional
value is Bypassed or defeated. The selected value can be between the
minimum and maximum full-scale range values. Only the values available
from the Recorder Outputs, Communication Gateway and Display Interface
Module are clamped to the specified value when the proportional value is
invalid.
Recorder Output
The proportional value of a channel that is sent to the 4 to 20 mA recorder.
The recorder output is proportional to the measured value over the channel
full scale range. An increase in the proportional value that would be indicated
as upscale on a bar graph display results in an increase in the current at the
recorder output. If the channel is bypassed, the output will be clamped to the
selected clamp value or to 2 mA (if the 2 mA clamp is selected).
OK Mode
Latching
If a channel is configured for Latching OK, once the channel has gone not
OK the status stays not OK until a reset is issued. Reset a latched not OK by
using one of the following methods:
- the reset switch on the front of the Rack Interface Module
- the contact on the Rack Interface I/O Module
- the Reset button in the Operator Display Software
- the reset command through the Communication Gateway Module
- the reset command through the Display Interface Module
- the reset command in the Rack Configuration Software
Nonlatching
The OK status of that channel will track the defined OK status of the
transducer.
Delay
The time which a proportional value must remain at or above an over alarm
level or below an under alarm level before an alarm is declared as active.
Alert
First level alarm that occurs when the transducer signal level exceeds the
selected Alert/Alarm 1 setpoint. This setpoint can be set on the Setpoint
screen. The Alert time delay is always set at one second intervals (from 1 to
60) for all available proportional values.
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