I. Basic Model Specification
Brand: Emerson (formerly VME industrial control product line, belonging to the same set of Concurrent generator VME control system supporting boards as the P144.R4 you previously queried)
Model: P155.R2 (R2 represents the second revision version of the hardware, and cannot be interchanged with R1/R3)
Bus Specification: Standard 6U single-width VME Eurocard card, compatible with Concurrent real-time VME computer chassis
Device Type: High-density signal distribution / transfer backplane interface board, without computing function, serving as a signal transfer terminal board between the VME master control and external field devices
Core Hardware Specifications
1. Interface Channel Structure
Backplane side: Standard VME J1/J2 double-row thick-pin bus connectors, connecting to the VME baseboard of the rack, collecting internal bus I/O, serial ports, and power signals of the entire machine
Front-end terminal side: Multiple groups of high-density European plug-in terminal blocks, used to branch out all bus signals and achieve centralized distribution of on-site wiring
Signal Compatibility:
24VDC power circuit, RS232/422 serial differential signals, digital input/outputs, 4-20mA analog signals, rotational/vibration sensor weak electrical signals
2. Electrical Parameters
Power Supply: Three power sources are taken from the VME backplane: +5V, +12V, and 24VDC
Signal Isolation: Key weak electrical channels are paired with DATEL ICP232 isolation modules (you can query ICP232.2-5V for use), blocking ground loop interference
Single-channel Current Capacity: Maximum 5A for digital input/output circuits, ≤ 200mA for analog signal circuits
Insulation Voltage: 1500VAC insulation protection between terminals and the backplane
3. Environment and Mechanics
Operating Temperature: -20℃ ~ +70℃, suitable for power plants and metallurgical strong electromagnetic cabinets
EMC Standard: IEC 61000-6-2 Industrial Anti-interference Grade
Size: 6U VME standard 178 (H) × 102 (W) × 30 (D) mm
Installation: Rack hot-swappable design, no need to stop the machine to replace spare parts
Core Hardware Specifications
1. Interface Channel Structure
Backplane side: Standard VME J1/J2 double-row thick-pin bus connectors, connecting to the VME baseboard of the rack, collecting internal bus I/O, serial ports, and power signals of the entire machine
Front-end terminal side: Multiple groups of high-density European plug-in terminal blocks, used to split and lead out all bus signals, achieving centralized distribution of on-site wiring
Signal Compatibility:
24VDC power circuit, RS232/422 differential signals, switch quantity DI/DO, analog 4-20mA, rotational / vibration sensor weak electrical signals
2. Electrical Parameters
Power Supply: Three power sources are taken from the VME backplane: +5V, +12V, and 24VDC
Signal Isolation: Key weak electrical channels are paired with DATEL ICP232 isolation modules (you can query ICP232.2-5V for use), blocking ground loop interference
Single-channel Current Capacity: Maximum 5A for switch quantity circuits, ≤ 200mA for analog signal circuits
Insulation Voltage: 1500VAC insulation protection between terminals and the backplane
3. Environment and Mechanics
Operating Temperature: -20℃ ~ +70℃, suitable for power plants and metallurgical strong electromagnetic cabinets
Core Functional Roles
Signal Centralized Routing and Conversion
The internal bus signals of the VME host are densely arranged and have fine pins, which cannot be directly connected to on-site cables; P155.R2 will lead out all bus signals to large-capacity plug-in terminals, facilitating on-site connection:
Concurrent SSI232.1 serial card, Emerson P144.R4 I/O board, VM600 vibration card, ABB excitation GFD563, flame amplifier EG1033, etc. external devices.
Signal Conditioning Expansion Base
The board card reserves soldering positions, allowing direct welding of DATEL ICP232 series isolation power modules, providing electrical isolation for multiple serial signals, solving communication garbled and channel breakdown problems caused by high-power frequency conversion and excitation systems.
Fault Segmented Diagnosis
Each path of the terminal block has an independent test point, allowing for separate measurement of a certain serial port, vibration, or switch quantity signal during maintenance, quickly distinguishing whether it is a fault of the VME motherboard or an external on-site device fault.
System Expansion and Extension
Multiple P155.R2 can be inserted into the same VME rack, sharing the massive measurement points of the entire machine, avoiding overload of the terminals of a single I/O board.
EMC Standard: IEC 61000-6-2 Industrial Anti-interference Grade
Size: 6U VME standard 178 (H) × 102 (W) × 30 (D) mm
Installation: Rack hot-swappable design, no need to stop the machine to replace spare parts
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