Description
1C31129G05 Each Personality module has a simplifified wiring diagram label on its side, which
appears above the terminal block. This diagram indicates how the wiring from the
fifield is to be connected to the terminal block in the base unit.
The diagrams for the analog input Personality modules are illustrated in
Figure 6-2. The following table lists and 1C31129G05 defifines the abbreviations used in those
diagrams.
As is standard for analog signals, shielded twisted-pair wire should be used for the
fifield interface. For the analog input, the (-) and shield should be tied together and to
earth ground, either locally at the cabinet or at the fifield device. Figure 6-4 through
Figure 6-7 show how the various Personality modules require these connections or
how the options are implemented.
Figure 6-8 illustrates the jumper settings for the Personality module.
brand | Product Name | Product model | Order No |
EMERSON | modular | 1C31129G05 | nothing |
Place of Origin | Marketable land | Imported or not | defects liability period |
Europe and America | Nationwide and overseas | yes | a year |
Place of shipment | Delivery method | How to use | Applicable industries |
Xiamen | Shunfeng Express | Commissioning and installation | Power Plant Steel Plant Cement Plant Shipboard Papermaking |
Service advantages | Foreign import, goods preparation and supply | Reasonable price and reliable quality | Pictures are for reference only |
Product features | Primary source of goods, supply by model | After sales guarantee | Chen 1810693-7731 |
When two dissimilar metals (a thermocouple) are joined together, a voltage (the
Seebeck Voltage) is generated between them. This 1C31129G05 voltage is directly related to the
temperature at the junction of the two metals. The relationship between the 1C31129G05 voltage
and the temperature can be best described by a fififth order polynomial, determined
by the two types of metals that are joined.
To measure the voltage (Vt) between the two metals, a voltmeter (in this case, an
analog input card) must be connected to each wire (see Figure 6-9). Unfortunately,
this produces two new junctions and voltages (V1 and V2) between the terminals
and the thermocouples. The following formula is used to fifind Vt: Vt = Vm -V1 -V2.
It is not possible to measure V1 and V2 without inducing more junctions and
voltages; therefore, the 1C31129G05 analog input subsystem has a temperature sensor on the
Personality module (1C31116G04) to measure the temperature (Tj) at the terminal
block of the base unit.
A conversion formula, determined from the junction metal and thermocouple
metals, is used to calculate the combined voltage of V1 and V2. This is called Cold
Junction Compensation.
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