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This Siemens expansion rack extends the I/O capacity of S5 automation systems. The Siemens 6ES5701-3LA13 accommodates up to 8 modules for flexible system growth. Its rugged construction ensures reliable support for all inserted components. This rack connects to the central controller via an interface module.
Physical Structure and Slot Configuration
The expansion rack measures 482 mm in width and 200 mm in height. Its overall depth reaches 160 mm including the mounting brackets. This unit weighs approximately 3.2 kilograms without power supply modules. The housing features 8 slots arranged in a single horizontal row. Each slot accepts any standard S5 19-inch module format. The Siemens 6ES5701-3LA13 uses a passive backplane for signal distribution. This backplane supports both 8-bit and 16-bit module interfaces.
Backplane Specifications and Electrical Characteristics
The backplane provides a 5 V DC supply rail to all connected modules. This rail delivers a maximum current of 8 A for power distribution. A separate 24 V DC rail offers up to 1.5 A for relay outputs. The backplane incorporates 12 address lines for module selection. Eight data lines handle bidirectional information transfer between modules. The Siemens 6ES5701-3LA13 includes built-in termination resistors for signal integrity. Two interrupt lines enable priority-based event handling across the rack. The backplane operates with a propagation delay of approximately 2 microseconds.
Connectors and Installation Features
The rack features a 48-pin female connector for each module slot. This connector provides both signal and power contacts for module interfacing. Two additional connectors supply external 24 V DC power to the backplane. The Siemens 6ES5701-3LA13 includes an energy storage capacitor of 680 µF. This capacitor compensates for brief power interruptions during operation. A ground terminal provides proper earthing for safety and noise reduction.
Detailed Specification Table
| Parameter | Specification |
|---|---|
| Dimensions (W x H x D) | 482 mm x 200 mm x 160 mm |
| Weight | Approx. 3.2 kg |
| Number of Slots | 8 |
| Module Compatibility | S5 19-inch modules |
| Backplane Type | Passive (parallel) |
| 5 V DC Supply Current | 8 A (max) |
| 24 V DC Supply Current | 1.5 A (max) |
| Address Lines | 12 |
| Data Lines | 8 |
| Interrupt Lines | 2 |
| Slot Connector Type | 48-pin female |
| Energy Storage Capacitance | 680 µF |
| Backplane Propagation Delay | Approx. 2 µs |
| Operating Temperature | 0°C to 60°C |
Installation and System Integration
Mount this expansion rack in a standard 19-inch cabinet using the supplied brackets. Position the rack horizontally to ensure proper airflow across all modules. Insert the interface module in the designated slot for system connectivity. Connect the external 24 V DC source to the designated terminal strip. The Siemens 6ES5701-3LA13 operates between 0°C and 60°C ambient temperatures. Ensure adequate clearance behind the rack for cable management. Use shielded cables for external connections to reduce noise interference. Ground the rack properly to protect against electrostatic discharge.