TOSHIBA GBU648E-S 8-slot mainframe base frame

I. Basic Product Positioning
Ownership System: Toshiba V Series Model 2000 Integrated PLC Controller (nv series Type1 Light platform)
Model Interpretation
BU648E: Basic Board Model; GBU648E*S (abbreviated as GBU648E-S) is the complete order model
Specifications: 8 G2 standard I/O slots + 4 TC-net bus expansion slots, belongs to the main base (Basic Base), cannot be simply used as an expansion base
Origin: Manufactured by the original factory in Japan; Product status: The original factory has discontinued production, with new inventory and disassembled test pieces as the main circulation
Net Weight: 1.04kg, metal-aluminum alloy heat dissipation frame + PCB backplane bus

Hardware Slots and Bus Architecture
1. Slot Allocation
8 standard single-width G2 I/O slots: Can be inserted with CPU modules, digital / analog I/O, communication modules, power modules
4 TC-net expansion bus interfaces: Support cascading external BU664/BU666 expansion base boards, remote expansion of I/O stations
Built-in high-speed parallel internal bus on the backplane, millisecond-level data interaction between modules, supports hot-swappable replacement of I/O sub-cards
2. Compatible Module Range
CPU: PUM11 (standard type), PUM12 (high-performance type) nv series main controller
I/O: Full series of V2000 digital input/output, AI/AO analog, thermocouple, high-speed counting module
Communication: Modbus, RS485, Ethernet, TC-net bus adapter card
III. Electrical and Environmental Parameters
Power Supply: Unified power supply from the inserted base board (standard DC24V system power supply circuit)
Installation: Standard DIN rail snap-fit installation, upright fixed in the control cabinet
Dimensions: Length 402.5mm, standard Eurocard rack thickness structure
Operating Temperature: 0℃ ~ +60℃ (enclosed environment of the control cabinet); Storage – 20℃ ~ +70℃
Protection Grade: IP20 (installed only in the cabinet, not in the open air)
Certification: CE industrial electromagnetic compatibility certification, applicable to shipboard, heavy industry scenarios for compatible shipboard certification complete system

Core Functional Features
Host-level Base
Built-in main control bus scheduling circuit, inserting the CPU can independently form a complete PLC control system, no additional base board required
Expandable Networking
Through TC-net bus multi-base board cascading, single system can be expanded to up to tens of I/O stations, suitable for small and medium-sized production lines, auxiliary control of ships, auxiliary machine logic of power plants
Integrated Cooling
Aluminum alloy overall frame assists PCB cooling, low temperature rise when multiple modules are operating at full load, stable long-term continuous operation
Hardware Self-check Circuit
Backplane has built-in bus fault detection, short circuit of slots, missing modules, communication interruption can upload CPU alarm diagnostic codes

Typical Application Scenarios
Ship Engine Self-Control: K-Chief compatible auxiliary machine control, pump valve, oil-water separator logic cabinet (a large number of ship equipment are equipped with Toshiba V2000 PLC)
Power Plant / Power Station Auxiliary Control: Circulation water pump, ash removal, desulfurization local PLC control cabinet
Chemical, water treatment, paper production line: Small-scale process sequential control, pump valve interlock
General Heavy Industry Equipment: Machine tools, hoisting, packaging machinery old Toshiba PLC retrofit parts