PCLD-770/779/789/889
Follow the procedure to perform thermocouple measurement:
1. Connect the thermocouple(s) to the terminals on the PCLD-770/779/789/889
2. Use a shielded ribbon cable to connect CN1 of the PCLD-770/779/789/889 to the analog input port on the DA&C card in use
3. Use a ribbon cable to connect CN2 of the PCLD-770/779/789 to the digital output port on the DA&C card in use
4. Select a proper input range or gain on the PCLD-770/779/789 for the type of thermocouple used, as described in the PCLD-770/779/789 hardware manual:
K type = 50
J type = 100
T type = 200
E type = 50
R type = 200
S type = 200
B type = 200
5. Select the desired input channel on the DA&C card to correspond with each PCLD-770/779/789 by setting the jumper block JP1(PCLD-770), JP16 (PCLD-789) or JP2 (PCLD-779) to a proper position. Positions 0..9 correspond to analog inputs 0..9 of the DA&C card in use.
6. Select the desired input channel on the DA&C card for the CJC (cold junction compensation) circuit on the PCLD-770 by hard wiring the CJC output directly to an A/D channel. On the PCLD-779/789 select the CJC channel by setting the jumper block JP17 (PCLD-789) or JP3 (PCLD-779). Positions 0..9 correspond to analog inputs 0..9 of the DA&C card in use. Of course, the CJC channel selected cannot be set to any analog channel that is already being used for another purpose.
7. If you are cascading or Y-connecting more than one PCLD-779/789 for thermocouple measurement, normally only one CJC input is required - i.e., only one of the PCLD-770/779/789s has to connect its CJC to the DA&C card.
8. Make sure jumper blocks JP16 and JP17 or JP2 and JP3 are not at the same position. They must be set to different input channels on the DA&C card.
9. Select the appropriate configuration in the configuration dialog box of the Advantech Device Manager, such as DA&C card, expansion board, expansion gain, and base address, etc.. The driver will perform the appropriate linearization only if the DA&C card's A/D input range is set to -5 V to +5 V.
Follow the procedure to perform thermocouple measurement:
1. Connect the thermocouple(s) to the PCLD-788 terminals
2. Select the desired input channel on the A/D I/O card to connect to the CJC (cold junction compensation) circuit and connect a jumper from the CJC output to the input channel. Select the same CJC channel during software configuration of the driver. Of course, theCJC channel selected cannot be set to any analog channel being used for another purpose.
3. Configure the base address and connection in the configuration dialog box of the Advantech Device Manager.
4. Select the input range -0.05 V to +0.05 V in your application for all thermocouple types.
5. When thermocouple type is selected, the driver will perform the appropriate linearization for the selected thermocouple type with respect to any selected A/D range. However, the optimum range is the A/D range that can handle the entire temperature range for each supported thermocouple type.
The PCLD-8115 is used as a terminal board to allow the user to connect differential or single-ended signals to a PCL-818HG. The PCLD-8115 includes a CJC circuit that can be enabled or disabled. Because the PCL-818HG provides amplification (to a gain of 1000), the PCLD-8115 itself requires no gain settings. If temperature measurement is to be performed, the CJC (channel 0) must be enabled.The PCLD-8115 must always be connected to the first eight A/D channels (0-7) of the multi-I/O card.
Follow the procedure to perform thermocouple measurement:
1. Connect the thermocouple(s) to the PCLD-8115 terminals.
2. Enable the CJC circuit, and always set at channel 0 on the PCLD-8115. Of course, the CJC channel cannot be used for any other purpose during temperature measurement.
3. Configure the base address and connection in the configuration dialog box of the device installation utility.
4. Select the input range -0.05 V to +0.05 V in your application for all thermocouple types.
5. When thermocouple type is selected, the driver will perform the appropriate linearization for the selected thermocouple type with respect to any selected A/D range. However, the optimum range is the A/D range that can handle the entire temperature range for each supported thermocouple type.