Manufacturer: Mitsubishi Electric
Product No.: Q4MCA-2MBS
Country of origin:United States
Product Type: PLC Memory Cassettes
Payment: T/T, Western Union
Weight: 20g
Dimensions: 4.9 cm x 3.2 cm x 1.85 cm
Shipping port: Xiamen
Warranty: 12 months
Engineered for high-speed data processing and expansion within the MELSEC-Q control architecture, the Mitsubishi Electric Q4MCA-2MBS is a high-reliability Static RAM (SRAM) memory cassette. This hardware-level module expands the available volatile storage capacity of compatible high-performance Q-Series CPU modules, enabling handling of extensive file registers, recipe data, system logging, and trace functions. Because it utilizes high-speed SRAM technology, it provides near-instantaneous read and write execution cycles crucial for time-critical industrial processes.
| Manufacturer | Mitsubishi Electric |
| Model Number | Q4MCA-2MBS |
| Series Name | MELSEC-Q Series |
| Memory Type | SRAM (Static RAM) |
| Memory Capacity | 2 Mbytes |
| Dimensions (H x W x D) | 4.9 cm x 3.2 cm x 1.85 cm |
| Net Weight | 0.02 kg |
| Shipping Weight (Calculated) | 1.00 kg (protective packaging included) |
Because this expansion card uses volatile SRAM technology, memory retention is fully dependent on the host CPU battery system (such as the Q6BAT). If the system is powered down and the CPU battery level drops below the operational threshold, all register data and files hosted on the memory cassette will be permanently lost. It is critical to implement regular automated backups from the volatile cassette to a non-volatile flash ROM card or external SCADA/HMI server.
Before mounting or unmounting the cassette, verify the static potential of your work area. Always wear an ESD-grounded wrist strap when handling the card to prevent localized electrostatic discharge from damaging the exposed memory bus contacts on the rear connector interface.
Do not attempt to insert or extract the memory cassette while the PLC main power supply or expansion chassis power is energized. Failing to completely de-energize the unit will cause physical short-circuits on the CPU interface bus, destroying the CPU module, the memory cassette, or corrupting active running registers.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
A practical commissioning sequence for KEPServerEX OPC UA connections: define data ownership, test tags locally, configure endpoint and certificate trust, limit access, then verify failure recovery...
Commissioning an Ethernet-connected PLC often starts with the laptop, not the controller. Learn how to record existing settings, choose a temporary address, test connectivity, and restore the plant...
Combustible dust controls require more than alarms. Learn how to map dust generation, select instrumentation, design interlocks, handle failed feedback, test safe states, and maintain the full...
Hairpin windings raise slot fill and support compact traction motors, but conductor geometry, AC losses, insulation damage, weld quality, and cooling determine whether the design meets its targets.
Use Ansible to standardize SCADA server changes without expanding OT risk. This guide covers inventories, idempotent playbooks, staged testing, credentials, logging, and practical rollback controls.
A VPN encrypts the path to an industrial network, but secure remote PLC work also needs identity controls, segmented access, change approval, logging, safe operating boundaries, and tested recovery...
