The Honeywell 51197155-300, also cataloged as the 51197155 Communication Component, serves as the primary 51197155 communication and interconnection device utilized to execute consistent data exchange across Honeywell TDC 3000 and Experion PKS Series C control platforms.
Hardware Specifications
Parameter
Specification
Model
51197155-300
Brand
Honeywell
Origin
USA
Weight
0.23 kg (0.5 lb)
Dimensions
5 x 5 x 0.5 inches
Operating Temp
-10 to 60 deg C
Supply Voltage
24 VDC (Module mode)
Typical Current Draw
100 mA
Communication Protocol
RS-485 Serial Interface / Modbus RTU
Network Capacity
Up to 128 addressable devices per segment
Connector Type
DB9 industrial connector (Cable mode)
Standard Cable Length
3.05 m (10 ft)
Process Control Network Integration
DCS Serial Topology Scaling When deployed in its module configuration, the device drives multi-drop serial communication across distributed networks. Operating over RS-485 physical layers with Modbus RTU protocol parameters, it manages polling loops for up to 128 addressable slave nodes on a single network segment without dropping transmission packets.
Channel-to-Channel Shield Isolation In its factory-terminated cable configuration, the component utilizes an overall shielded PVC jacket that acts as an industrial noise barrier. The electrical pinout is optimized to maintain low insertion loss and high common-mode rejection ratios, isolating delicate controller logic gates from induced electromagnetic field transients.
Frequently Asked Questions
Q: How does the 51197155-300 manage line termination constraints across long RS-485 bus runs?
A: When utilizing the module interface for multi-drop segments, external 120 ohm end-of-line termination resistors must be manually applied to the final physical node on the network loop. This prevents signal reflections from distorting the Modbus RTU pulse transitions.
Q: Is the 24 VDC power connection reverse-polarity protected on the module block?
A: Yes. The internal circuit design contains an inline solid-state blocking diode that prevents hardware component failure if the 24 VDC power supply leads are accidentally cross-connected during commission field routines.
