SAIA PCD3.T760

Core Technical Specifications

1. Rack Physical Expansion Capacity
   • Maximum Installable Module Quantity: Up to 4 PCD3 series CPU or I/O expansion modules inside single T760 rack housing
   • Internal Backplane Bus Type: Integrated S-Bus high-speed 4 Mbps differential signal backplane bus strip, pre-connected between all 4 module installation slots inside rack housing
   • Module Slot Compatibility: Fully compatible with all PCD3.M CPU base units (M5540, M6340), PCD3.A digital output modules, PCD3.W analog input/output modules
2. Integrated Power Distribution Terminal Parameters
   • Built-in 24 V DC power distribution terminal bar, distributes smoothed 24 V DC industrial supply power to all modules installed inside rack housing
   • Maximum Total Power Distribution Load Capacity: 30 W total combined power consumption of all 4 installed modules
   • Power Input Terminal Specification: Detachable 4-pin spring cage terminal block for rack 24 V DC main power supply wiring, single terminal wire cross-section support up to 2.5 mm² solid copper cable
3. Environmental & Mechanical Physical Specifications
   • Operating Ambient Temperature Range: 0 °C ~ +55 °C (natural convection cabinet mounting layout)
   • Storage Transportation Temperature Range: -40 °C ~ +85 °C
   • Relative Ambient Humidity: 5% ~ 95%, non-condensing environment only
   • Rack Housing Protection Class: IP20
   • Overall Physical Dimensions (W × H × D): 152 mm × 126 mm × 85 mm
   • Net Weight of Empty T760 Rack Unit: 0.42 kg
   • Global Industrial Safety Certifications: CE, UL

Function Features

1. Integrated pre-wired S-Bus backplane bus strip inside rack housing; after inserting CPU and I/O expansion modules into rack slots, internal backplane automatically completes S-Bus bus connection between all modules without manual bus cable wiring between individual modules, reducing field wiring construction workload and wiring fault probability
2. Built-in centralized 24 V DC power distribution terminal bar inside rack housing; single main 24 V DC power supply input wiring to rack power terminal bar distributes stable operating power to all modules installed in rack slots, eliminating separate independent power supply wiring for each individual PLC module
3. 4 independent module installation slots with dedicated anti-vibration locking buckle structure for each slot; each inserted PLC module can be individually locked into rack slot or unlocked for independent hot-swap replacement operation without removing other adjacent modules installed inside rack housing
4. Detachable multi-group spring cage wiring terminal blocks integrated on rack front panel; separate dedicated terminal blocks allocated for rack main power supply input wiring, field digital/analog I/O signal wiring of all installed modules, terminal blocks support pre-wiring off-cabinet before installing rack unit into electrical cabinet to accelerate construction progress
5. Integrated internal rack overcurrent short-circuit protection circuit on power distribution terminal bar; when total combined power consumption of installed modules exceeds rack maximum 30 W load capacity or internal short-circuit fault occurs, built-in self-resetting thermal fuse automatically cuts off rack internal power distribution circuit to protect all installed PLC modules from overvoltage overcurrent damage