Omega Engineering CN 79000 Thermostat User Manual


 
Page 27 of 40
Note: If both Set Point 1 and Set Point 2 are set for temperature
inputs, they must both be set for the same scale. While it is possible
to set one input as degrees F and the other degrees C, as there is
only one descriptor, one of the displays is likely to be mis-read. If
one Set Point is set for process input, you may select to display
either the temperature descriptor or neither (nonE).
dPt1dPt1
dPt1dPt1
dPt1 Decimal Point Positioning: Select
00
00
0,
0.00.0
0.00.0
0.0,
0.000.00
0.000.00
0.00, or
0.0000.000
0.0000.000
0.000.On
temperature type inputs this will only effect the Process
Value, SP1, and InC1. For Current and Voltage Inputs all
Menu Items related to the Input will be affected.
00
00
0 No decimal Point is selected. This is available for
all Input Types.
0.00.0
0.00.0
0.0 One decimal place is available for Type J, K, E, T,
L, RTD’s, Current and Voltage Inputs.
0.000.00
0.000.00
0.00 Two decimal places is only available for Current
and Voltage Inputs.
0.0000.000
0.0000.000
0.000 Three decimal places is only available for Current
and Voltage inputs.
Int1Int1
Int1Int1
Int1 Input Fault Timer: Select
OFFOFF
OFFOFF
OFF,
0.10.1
0.10.1
0.1 to
540.0540.0
540.0540.0
540.0 minutes. When-
ever an Input is out of range (UFL or OFL displayed), shorted,
or open the timer will start. When the time has elapsed, the
instrument will disable the output(s) and display
bAd InPbAd InP
bAd InPbAd InP
bAd InP.
If OFF is selected, the Input Fault Timer will not be recog-
nized (time = infinite).
SEn1SEn1
SEn1SEn1
SEn1 Sensor Rate of Change: Select
OFFOFF
OFFOFF
OFF,
11
11
1 to
40004000
40004000
4000 °F, °C, or
counts per 1 second period. This value is usually set to be
slightly greater than the fastest process response expected
during a 1 second period, but measured for at least 2
seconds. If the process is faster than this setting, the SEn1
bAd error message will appear. The outputs will then be
turned off. This function can be used to detect a runaway
condition, or speed up detection of an open thermocouple.
Use the INDEX & ENTER keys to reset.
SCL1SCL1
SCL1SCL1
SCL1 Scale Low: Select 100 to 9999 counts below
SCH1SCH1
SCH1SCH1
SCH1. The total
span between
SCL1SCL1
SCL1SCL1
SCL1 and
SCH1SCH1
SCH1SCH1
SCH1 must be within 11998 counts.
Maximum setting range is -1999 to 9999 counts. Minimum
span is 100 counts. For Current and Voltage inputs, this will
set the low range end. Viewable only for Thermocouple and
RTD ranges.