The FX3U-32MR-ES-A belongs to Mitsubishi's flagship FX3U series. This model represents the high-end of the MELSEC-F family. It combines high-speed execution with extensive communication options. Many system integrators choose it for demanding applications. The relay outputs provide versatility for mixed AC and DC loads.
This logic module has a total of 32 input and output points. Specifically, it offers 16 digital input points and 16 digital output points. The output type is relay, rated at 2A per point. This allows direct switching of small motors, contactors, and lights.
Supply voltage is AC100 to 240V, covering global industrial standards. Power consumption is 35W, which is efficient for its capability. The unit weighs 0.65 kg. Outline dimensions are 150mm wide, 90mm high, and 86mm deep.
Processing speed is remarkably fast at 0.08 microseconds per basic instruction. Application instructions execute in just 0.16 microseconds. This makes the FX3U-32MR-ES-A suitable for high-speed positioning and real-time control tasks.
Built-in RAM memory holds 8000 steps as standard. You can expand this up to 16000 steps using a memory cassette. The unit supports EEPROM and flash memory options. Data register capacity is 8000 points. Auxiliary relays total 7680 points. Timers and counters provide 512 points each.
Additionally, the FX3U-32MR-ES-A includes 256 index registers. This large capacity supports complex data handling and recipe management. Program retention is maintained by a replaceable battery (standard included).
The FX3U-32MR-ES-A offers outstanding scalability. Local I/O control can reach up to 256 points. When using CC-Link remote I/O, the maximum control points extend to 384 points. This includes remote I/O, analog modules, and special function modules.
You can connect up to 8 expansion modules on the right side. Expansion units include I/O modules, analog input/output, temperature control, and high-speed counters. Furthermore, the built-in CC-Link port (on some variants) simplifies network integration.
The FX3U-32MR-ES-A has built-in positioning capabilities. For relay output models, positioning speed is limited by mechanical relay response. However, the CPU itself supports high-speed processing of positioning data. You can connect external stepper or servo drives via transistor expansion modules.
Three independent 100kHz high-speed counters are available. Two 100kHz pulse outputs can be configured for simple motion control. These features make the FX3U-32MR-ES-A ideal for basic positioning tasks without extra modules.
Internal consumption currents are well defined. DC5V internal consumption is 900mA maximum. DC24V service power supply provides 400mA for external sensors. This built-in supply reduces the need for external power bricks.
The quick-disconnect terminal block is a notable feature. You can remove the entire terminal block without rewiring. This greatly simplifies module replacement and maintenance. Therefore, downtime during repairs is significantly reduced.
Operating temperature range is 0°C to 55°C. Storage temperature ranges from -20°C to 70°C. Relative humidity should stay between 10% and 90% without condensation. Vibration resistance is 5g from 10 to 57Hz. Shock resistance is 10g.
The FX3U-32MR-ES-A meets various international safety standards. These include UL, CE, and C-Tick certifications. Therefore, it is suitable for export and global machine builders.
First, mount the unit on a DIN rail or using M4 screws. Leave at least 50mm clearance above and below for cooling. Next, connect AC power to the L and N terminals. The ground terminal must be connected to a proper earth ground.
For input wiring, use 24V DC sinking or sourcing sensors. The built-in 24V DC supply can power these devices up to 400mA. For relay outputs, connect loads up to 2A per point. AC loads require proper snubber circuits for inductive devices.
Finally, apply power and check the PWR LED. Connect programming software via the RS422 port. GX Works2 or GX Developer provides full support. The FX3U-32MR-ES-A is now ready for program download and testing.
1. Can the FX3U-32MR-ES-A communicate with an HMI via Ethernet?
The base unit does not have built-in Ethernet. You need an Ethernet expansion module (FX3U-ENET-L or FX3U-ENET-ADP). However, the RS422 port connects directly to most Mitsubishi HMIs.
2. How many expansion modules can I connect to this PLC?
You can connect up to 8 expansion modules on the right side. These include I/O, analog, temperature, and communication modules. Remote I/O via CC-Link expands this much further.
3. What happens to the program if the battery dies?
The FX3U-32MR-ES-A uses RAM memory. If the battery fails, the program and data will be lost. Therefore, replace the battery every 3-5 years. Use a memory cassette (EEPROM) for permanent program storage.
4. Can I use this relay output model for high-speed switching?
Relay outputs are mechanical devices. They have limited lifespan at high frequencies. For high-speed switching (above 10Hz), choose a transistor output model like the FX3U-32MT-ES-A.
5. Does the FX3U-32MR-ES-A support analog input without an extra module?
No. This base unit has no built-in analog inputs. You need an analog expansion module such as FX3U-4AD or FX3U-8AD. The same applies for analog outputs (FX3U-4DA).
| Brand Name | MITSUBISHI |
| Model No. | FX3U-32MR-ES-A |
| Product Type | Programmable Logic Controller |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
