GFK-1504K
Chapter 14 Temperature-Sensing Modules
14-15
14
IC200ALG630
Analog Input, 16 Bit Thermocouple, 7 Channels
Cold Junction Compensation
The Thermocouple module provides four choices for Cold Junction Compensation.
No Cold Junction Compensation: This is used for millivolt inputs or if cold junction
is maintained at 0 degrees C.
Remote Cold Junction Compensation: With this option, cold junction is measured
externally and provided to the module from the application, via the module’s analog
output (word output) data. If the module has multiple thermocouples that are
configured for remote compensation, the same compensation value must be used by
each.
Fixed Cold Junction Compensation: This option uses a fixed compensation value
which is provided as part of the module configuration.
Local Cold Junction Compensation: The best way to provide local compensation is
with an Interposing Thermocouple I/O Terminals. (IC200CHS014), which has a
built-in thermistor. Using an Interposing Carrier allows the thermocouple
connections to be placed farther away from the I/O modules in the system, which
helps shield thermocouple connections from module heat.
If Local Cold Junction Compensation is configured and an Interposing
Thermocouple I/O Terminals is not used, a separate thermistor must be installed
directly at the module’s I/O Carrier, using the Thermistor (+) and Thermistor (–)
terminals. The thermistor must be that supplied in kit # IC690ACC905.
Note:
If
Local Compensation is selected but an Interposing Thermocouple I/O Terminals or
local thermistor is not used, erroneous temperatures may be reported and a
thermistor error will be reported in the fault table.
Range Selection
The module is configurable for any of six different millivolt ranges (+/–): 19.5mV, 39mV,
78.125mV, 156.25mV, 312.5mV, and 625mV. All but the last provide input readings in
hundredths of millivolts. For the 625mV range, inputs are in tenths of millivolts. When
used to read millivolts, the Thermocouple Type configuration parameter must be set to
“none”.
PDFsupply.com
Содержание VersaMax
Страница 3: ...PD Fsupply com ...
Страница 27: ...1 20 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 1 PD Fsupply com ...
Страница 79: ...3 14 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 3 PD Fsupply com ...
Страница 123: ...5 22 VersaMax Modules Power Supplies and Carriers User s Manual February 2003 GFK 1504K 5 PD Fsupply com ...
Страница 139: ...6 16 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 6 PD Fsupply com ...
Страница 243: ...8 48 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 8 PD Fsupply com ...
Страница 297: ...9 54 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 9 PD Fsupply com ...
Страница 345: ...10 48 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 10 PD Fsupply com ...
Страница 451: ...13 28 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 13 PD Fsupply com ...
Страница 471: ...14 20 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K 14 PD Fsupply com ...
Страница 487: ...A 12 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K A PD Fsupply com ...
Страница 489: ...B 2 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K B PD Fsupply com ...
Страница 495: ...C 6 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K C PD Fsupply com ...
Страница 499: ...D 4 VersaMax Modules Power Supplies and Carriers User s Manual March 2003 GFK 1504K D PD Fsupply com ...