Product Description / Overview

The Honeywell 8C-TDOLA1 (51307141-175) is a high-performance digital input module designed for Series 8 I/O platforms used in Experion PKS and LX control systems. It monitors 24 VDC field signals with high accuracy, giving operators dependable visibility of switches, sensors, relays, and open-collector outputs. Moreover, its compact construction and conformal coating ensure durability in demanding industrial environments. The module integrates easily with existing system architectures and supports fast input scanning for time-sensitive applications.

Technical Specifications

Model / Part Number
8C-TDOLA1 / 51307141-175

Electrical Characteristics

• Number of Channels: 32 isolated digital inputs

• Input Type: Dry contact / open-collector

• Nominal Input Voltage: 24 VDC

• Input Current: 3–8 mA per channel

• Input Scan Time: 20 ms standard; 5 ms fast

• Isolation Voltage: 1500 VDC

• Diagnostics: Open circuit, short circuit, line fault detection

Mechanical & Environmental

• Installation Type: DIN-rail or rack mounting

• Dimensions (W × H × D): 120 × 25 × 100 mm

• Weight: 0.3 kg

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: –20 °C to +70 °C

• Humidity: 10–95% RH, non-condensing

Certifications & Warranty

• Certifications: CE, COO

• Country of Origin: USA

FAQ

Q1: Which control systems support the 8C-TDOLA1 module?
It supports Honeywell Series 8 I/O platforms used in Experion PKS and LX systems.

Q2: What types of digital inputs can this module read?
It accepts dry contacts, open-collector outputs, relays, and similar 24 VDC digital signals.

Q3: Does this module provide isolation?
Yes, each channel is isolated from the system with 1500 VDC protection.

Q4: How fast can it scan digital inputs?
Standard scan time is 20 ms, and fast mode reduces it to 5 ms.

Q5: Are diagnostic features included?
The module detects open circuits, short circuits, and wiring faults automatically.