The Honeywell 51305072-500 serves as the primary CLCN-A Local Control Network Input Output Board utilized to execute bidirectional signal interfacing across TDC 3000 platforms.
Hardware Specifications
Parameter
Specification
Model
51305072-500
Brand
Honeywell
Base Model
CLCN-A / CLCNIO
Product Type
Local Control Network (LCN) I/O Board
System Platform
TDC 3000 / TPS DCS Systems
Origin
USA
Weight
0.54 kg
Dimensions
165 mm x 114 mm
Operating Temp
-20 to 70 deg C
Operating Voltage
24 VDC
Current Consumption
150 mA typical
Channel Isolation and Process Interface Features
The Honeywell 51305072-500 board processes multi-channel analog and digital telemetry through local cabinet interface channels. The circuit design incorporates channel-to-channel isolation and low-noise bus drivers to maintain signal integrity across high-density DCS racks. Designed to manage 4-20 mA HART loops and discrete Fieldbus data traffic, the board features integrated digital filtering and cold junction compensation (CJC) references for direct thermocouple card interfaces operating on the same rack assembly.
Frequently Asked Questions
Q: What grounding procedure is required when installing the 51305072-500 board in a TDC 3000 rear chassis slot?
A: Mount the assembly using the chassis grounding panel and ensure the rear backpanel shielding plate makes low-impedance contact with the cabinet frame ground.
Q: Can the board be installed while the node backplane remains active?
A: While the hardware architecture supports live insertion, field loops linked to the module must be bypassed or set to manual output mode to prevent unexpected process trips during bus handshake initialization.
Field Installation Guidelines
Verify that local cabinet temperatures remain strictly within the operating range of -20 to 70 deg C prior to board mounting.
Inspect slot connector pins and backpanel guide rails to confirm clean, alignment-ready physical paths free of physical obstruction.
Insert the 51305072-500 module firmly into its assigned slot until edge connectors fully seat into the rear backplane bus.
Terminate all field signal cable shields at a single chassis ground bus bar to eliminate ground potential loops.
Supply 24 VDC power and verify that node communication diagnostic LEDs show steady run-state status.
