Product Description

Model Number Interpretation

• 45C: Reliance AutoMate 45C‑series control components prefix.

• 344: 8‑channel ±10 VDC bipolar analog input module.

• No suffix: Original revision; no common A/B/C/D variants.

Technical Specifications

• Channels: 8 single‑ended (differential configurable)

• Input Range: ±10 VDC (bipolar, fixed)

• Resolution: 12‑bit ADC

• Conversion Rate: ~10 ms/channel

• Accuracy: ±0.1% full scale (25°C)

• Input Impedance: >1 MΩ

• Backplane Power: 5 VDC, 200 mA

• Slot Occupancy: 1 slot

• Operating Temperature: 0°C to +55°C

• Dimensions: ~96.5 × 70.5 × 56.5 mm

• Weight: ~0.45 kg

• Isolation: Channel‑to‑backplane 500 Vrms

Interface & Configuration

• Mounting: Side‑insertion into 45C31x racks, screw‑secured.

• Backplane: Edge connector for power/data/status.

• Front Panel: ACTIVE/READY LEDs; no per‑channel indicators.

• Terminal Block: 16‑pin removable screw terminal (signal ±, shield).

• Configuration: Range fixed ±10 VDC; scaling/filtering via PLC software.

Core Functions

• Converts ±10 VDC bipolar analog signals (pressure, level, temperature, flow) to 12‑bit digital values.

• Provides 8 isolated channels for high noise immunity.

• Transmits data to CPU via backplane.

• Supports scaling/filtering via PLC programming.

• Detects open/short/overvoltage faults; reports to CPU.

Application Scenarios

• Analog input expansion for AutoMate 30/40 series racks.

• Legacy systems: manufacturing, process control, water treatment, HVAC.

• Monitoring ±10 VDC sensors (common in industrial instrumentation).

• High‑density analog input applications (8 channels/slot).

Usage & Maintenance

• Installation: Power off rack, insert module, tighten screws.

• Wiring: Shielded cable; ground shield at one end.

• Configuration: Set scaling in PLC software.

• Routine Check: Verify ACTIVE/READY LEDs monthly; clean terminals quarterly.

• Safety: Disconnect AC power before removal.