WOODWARD T/C Input Board 5461-650

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Description:

Part Number: 5461-650
Manufacturer: Woodward
Product type: T/C Input Board
Input Impedance: 2.0 Mohm
Network to I/O channel: 277 Vac
Power supply input to network: 277 Vac
I/O channel to I/O channel: 0 V
PS input to I/O channel: 500 Vdc
Power Supply Input: 18 to 32 Vdc
Power Required: 2.4 W at 24 Vdc
Availability: In Stock
Country of Manufacture: United States (USA)

Product Attributes：
1.For external signals and power, the NPM module has three card edge connectors (P1, P2 and P3). Connector P1 connects to the Controlway, common (ground), and +5 VDC power. ConnectorP2 connects the NPM and NIS modules.

2.Connecto rP3 communicates between the primary and backup process control unit interfaces. The NPM module communicates with the NIS module via the I/O expander bus within its process control unit.

Troubleshooting：
1.The Module features the capability to receive information from thermocouples, which can be of either J or K type. The specific type of thermocouple used is determined and selected within the application program. Additionally, the module is equipped with an AD592 ambient temperature sensor that is mounted directly on the module. This sensor serves the purpose of cold junction temperature sensing, enabling compensation for temperature variations at the cold junction.

2.The compensation for the cold junction temperature is performed in software, utilizing the readings from the AD592 sensor. By accounting for the ambient temperature at the cold junction, accurate temperature measurements can be achieved for the thermocouple inputs.

3.The module offers two versions: fail high and fail low. The version is selected by adjusting the jumpers on the module board. These jumpers enable the input channels to be pulled either high or low in case of an open input. This feature ensures that a specific signal is maintained when an input is not connected, preventing erratic or inaccurate readings.

4.Each input channel on the module is multiplexed to a voltage-to-frequency converter. This converter converts the incoming analog voltage from the thermocouple or ambient temperature sensor into a frequency signal. The module processor reads the period of this frequency signal and converts it into a count. This count is then transmitted via the transceiver module to the LINKnet controller module, which handles data communication within the network.

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