Sensaphone CELL682 - Manual (Page 33)

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Chapter 4: Input programming
ChapTer 4: InpuT programmIng
The Cell682 features 8 dry contact inputs and 6 analog inputs. The analog inputs
are configurable as temperature or 4–20mA. The contact inputs can be used with
Normally Open (NO) or Normally Closed (NC) sensors. The analog inputs can
be used with 2.8K or 10K thermistors for temperature monitoring (available from
Sensaphone) or any 4–20mA transducer. The monitored temperature range is -60°
to 175° F (-51° to 79° C). See page 20 for 2.8K range. Programmable table values
can be entered when using 4–20mA transducers to scale the reading to the appro-
priate units of measure.
Note: It is highly recommended that if you make any programming changes
locally (at the unit via the serial port) after your web page has been initialized,
that you click the Programming Refresh Link on the web page soon thereafter.
This is to ensure that the information you are viewing on the web page is up to
date. This will also ensure that the alarm log information displayed on the web
page is accurate.
alarM states
Each Dry Contact or Analog input is monitored based on the programming
parameters that define the input type and the alarm limits for each input. Based
on this programming all inputs will always be in one of four Alarm States: Normal,
Alarm, Unacknowledged Alarm, or Normal-Unacknowledged. Each of these alarm
states is defined below:
A “Normal” alarm state means that an input is either:
a) Within the programmed alarm limits.
b) A Normally Open input is open, or a Normally Closed input is closed.
c) An input is beyond its limits or is opposite of its programmed normality, but
has not yet met its programmed alarm Recognition Time.
An input that is in an “Alarm” state means that:
a) The selected input is currently beyond its programmed alarm limits or is
opposite of its programmed normality.
b) The selected input has exceeded the programmed recognition time.
c) The alarm has been acknowledged.
An input that is in an “Unacknowledged Alarm” state means that:
a) The selected input is currently beyond its programmed alarm limits or is
opposite of its programmed normality.
b) The selected input has exceeded the programmed recognition time.
c) The alarm has not been acknowledged.