Omega Engineering CN 79000 Thermostat User Manual


 
Page 32 of 40
SCH2SCH2
SCH2SCH2
SCH2 Scale High: Select 100 to 9999 counts above
SCL2SCL2
SCL2SCL2
SCL2. The total
span between SCL2 and SCH2 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 high range end. Viewable only for Thermocouple and
RTD ranges.
SPL2SPL2
SPL2SPL2
SPL2 Set Point Low: Select from the lowest input range value to
SPH1 value. This will set the minimum SP2 value that can
be entered. The value for SP2 will not stop moving when this
value is reached. Attempting to set a value for SP2 lower
than SPL2 will result in a CHEC SP2 error. The value will not
be accepted.
SPH2SPH2
SPH2SPH2
SPH2 Set Point High: Select from the highest input range value to
SPL2 value. This will set the maximum SP2 value that can
be entered. The value for SP2 will not stop moving when this
value is reached. Attempting to set a value for SP2 higher
than SPH2 will result in a CHEC SP2 error. The value will not
be accepted.
S2StS2St
S2StS2St
S2St Set Point State: Select
dirdir
dirdir
dir or
rErE
rErE
rE.
dirdir
dirdir
dir Direct Action. As the input increases the output
will increase. Most commonly used in cooling
processes.
rErE
rErE
rE Reverse Action. As the input increases the output
will decrease. Most commonly used in heating
processes.
If
Out2Out2
Out2Out2
Out2 is set for ##
tPtP
tPtP
tP, or #
PULPUL
PULPUL
PUL, then
S2OHS2OH
S2OHS2OH
S2OH and
S2OHS2OH
S2OHS2OH
S2OH (following)
appear. If
Out2Out2
Out2Out2
Out2 is set for
ONOFONOF
ONOFONOF
ONOF, then skip to
S2rES2rE
S2rES2rE
S2rE.
S2OLS2OL
S2OLS2OL
S2OL Set Point Output Low Limit: Select
00
00
0 to
9090
9090
90% but not greater
than
S2OHS2OH
S2OHS2OH
S2OH. This item limits the lowest output value. This is
useful for adding a bias to the process when needed.
Factory set to
00
00
0 for output codes 1,2, 3, and 8. Factory set
to
2020
2020
20 for output code 5 (20% output equals 4 mA output).
S2OHS2OH
S2OHS2OH
S2OH Set Point 1 Output High Limit: Select
1010
1010
10 to
100100
100100
100% but not less
than
S2OLS2OL
S2OLS2OL
S2OL for output codes 1, 2, 3, or 8. Select
1010
1010
10 to
102102
102102
102%
but not less than
S2OLS2OL
S2OLS2OL
S2OL for output code 5. This item allows
setting the maximum output limit. This is useful with pro-
cesses that are over powered. Adjustment to 102% allows
setting current output to force a full on condition for output