Technical Specifications Overview
The table below details the core technical parameters of this PLC module.
| Parameter | Specification |
|---|---|
| Model Number | 45C343 |
| Product Type | PLC Module (Discrete I/O) |
| Compatible System | Reliance Electric Automax Series |
| Digital Inputs | 16 points (24 VDC, isolated) |
| Digital Outputs | 16 points (relay, Form A) |
| Input Voltage Range | 18 VDC to 30 VDC |
| Input ON Threshold | ≥ 15 VDC |
| Input OFF Threshold | ≤ 5 VDC |
| Nominal Input Current | 7 mA per point (at 24 VDC) |
| Output Contact Rating | 2 A at 250 VAC / 30 VDC |
| Output Relay Life (Mechanical) | 20,000,000 operations |
| Output Relay Life (Electrical) | 100,000 operations (at rated load) |
| Input Response Time | 2 ms (typical) |
| Output Response Time | 10 ms (typical) |
| Internal Power Draw | 5 VDC, 300 mA |
| External Power Supply | 24 VDC (for output relay coil) |
| Dimensions (W x H x D) | 60 mm x 110 mm x 120 mm |
| Weight | 0.40 kg |
| Terminal Type | 34-point removable screw terminal block |
| Indicators | 32 LEDs (16 green for inputs, 16 green for outputs) |
| Isolation Voltage | 2500 VAC (input/output to logic) |
| Operating Temperature | 0°C to +55°C |
Integrated Digital Input and Output Interface
The 45C343 PLC module combines 16 digital inputs and 16 relay outputs in a single, space-saving unit. This PLC module provides a complete discrete I/O solution for the Automax control system, reducing the total number of modules required for typical applications. The 16 inputs accept standard 24 VDC signals from push buttons, limit switches, and proximity sensors.
The 16 relay outputs offer Form A (normally open) contacts, which switch loads up to 2 A at 250 VAC or 30 VDC. These outputs suit driving contactors, solenoid valves, indicator lamps, and alarm horns. The integration of both input and output circuits on one module simplifies wiring and conserves rack space.
High-Performance Input and Output Characteristics
This PLC module delivers fast input response at 2 ms, enabling reliable detection of high-speed events. The outputs switch within 10 ms, making them suitable for most sequencing and interlocking applications. The inputs feature a nominal current draw of only 7 mA, minimizing the load on the field power supply.
The 45C343 provides 2500 VAC isolation between field circuits and the control logic, safeguarding the processor from voltage surges and electrical noise. This high isolation voltage ensures reliable operation even in electrically noisy industrial environments. The module includes transient suppression on both inputs and outputs, preventing damage from inductive load switching.
Physical Design and Installation Features
This PLC module occupies a single slot in the Automax base rack and measures 60 mm in width. The module weighs 0.40 kg, making handling straightforward during installation and replacement. A 34-point removable screw terminal block on the front panel accepts all field wiring connections, simplifying installation and maintenance.
Thirty-two green LEDs provide clear visual status indication: 16 LEDs for input channels and 16 LEDs for output channels. This comprehensive indicator set enables rapid troubleshooting without requiring a programming terminal. The terminal block accepts wires up to 2.5 mm² (AWG 14), ensuring reliable connections.
Power and Environmental Specifications
The 45C343 draws 300 mA from the 5 VDC backplane and requires an external 24 VDC supply for relay coil activation. This PLC module operates reliably across a temperature range of 0°C to +55°C. It also withstands humidity from 10% to 90% (non-condensing) and resists vibration up to 2G at 10-100 Hz.
Details
| Weight | 0.4 kg |
|---|---|
| Dimensions | 60 × 110 × 120 mm |
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