Pepperl+Fuchs HiD2900TOP Two-Channel Pass-Through Terminal Module
The Pepperl+Fuchs HiD2900TOP is a two-channel pass-through terminal module for HiD termination-board systems. It provides a direct field-to-system connection path for 0–20 mA signals and gives technicians front-accessible test points for both channels. The module is intended for installations where a termination board organizes field wiring and control-system connections without requiring signal isolation or conversion inside this particular module.
Official Pepperl+Fuchs data identifies part number 273161 and a field circuit with terminals 1, 2, 3, and 4. The internal resistor is 250 Ω and can be selected through a DIP-switch arrangement for the application. Because the HiD2900TOP is a pass-through terminal module rather than an isolated barrier, the engineering team must evaluate isolation, intrinsic safety, current-loop power, and protection elsewhere in the system.
Role in a HiD Interface System
HiD modules plug into dedicated termination boards that distribute power and route field and system wiring. A pass-through module can be useful during commissioning, migration, troubleshooting, or applications where the control system already provides the necessary signal conditioning. The front test points allow technicians to measure loop behavior without disturbing permanent wiring, subject to the plant's approved test procedure.
The module should not be selected as a substitute for an isolated barrier, temperature converter, or HART interface without reviewing the loop design. A direct current path can have different grounding, fault, and hazardous-area implications. Confirm where the loop supply originates, how the analog input is referenced, whether a 250 Ω communication resistor is needed, and whether galvanic isolation exists elsewhere.
Key Product Data
| Verification point | Information for this product page |
|---|---|
| Model / part number | HiD2900TOP / 273161 |
| Module type | Two-channel pass-through terminal module |
| Signal | 0–20 mA field circuit |
| Internal resistor | 250 Ω, selectable by DIP switch as specified by the manufacturer |
| Field terminals | Terminals 1, 2, 3, and 4 |
| Ambient temperature | 0 to 60 °C |
| Protection / dimensions | IP20; approximately 18 × 114 × 135 mm |
| Mounting | On a compatible HiD termination board |
Termination-Board Compatibility
Verify the exact termination-board model, slot type, channel assignment, connector arrangement, and control-system adapter before ordering. HiD system components can be mechanically similar while using different keying or functions. Pepperl+Fuchs notes that module pins are trimmed to polarize the device according to its parameters and should not be changed. Never force a module into an incompatible slot or alter the keying.
Before removal or installation, follow site procedures for de-energizing or safely working on the loop. The red Quick Lok bars must be operated as described in the manufacturer instructions. Inspect board connectors, module pins, and locking points for damage. Record the original slot and channel numbers so the replacement returns to the correct signal path.
Commissioning and Test Points
Commissioning should check field polarity, loop supply, current range, resistor-switch position, analog-input scaling, grounding, and test-point readings on both channels. Apply representative loop currents and compare the control-system indication with a calibrated meter. If HART communication is required, confirm that the selected resistor and loop impedance meet the communicator and device requirements.
Test points improve access but should be used only with suitable equipment and procedures. An accidental short circuit can interrupt the loop or damage equipment. For live plant tests, document expected current, process impact, and control-system response before connecting a meter. Restore covers and switch settings after work and save the final configuration with the loop records.
Photo and Receiving Verification
The reused photograph shows mixed Pepperl+Fuchs cartons and does not clearly display a HiD2900TOP label. It is a brand and inventory reference only. Receiving inspection must confirm HiD2900TOP, part number 273161, the two-channel front marking, connector condition, correct polarization, and compatible termination board.
For price and availability, provide the termination-board model, control-system type, channel count, intended 0–20 mA loop arrangement, resistor requirement, quantity, certificates, and destination. A clear photo of the installed module and surrounding board slots helps verify mechanical and electrical compatibility.
