Description
Product Overview
The Honeywell CC-PDIS01, part number 51405042-176, is a 32-channel Digital Input Sequence of Events (DISOE) module designed for Honeywell Series C control systems. It accepts 24 VDC discrete field signals and provides high-resolution event time stamping for applications where the exact order and timing of field events matter.
The module supports three operating modes: Normal mode with a 20 ms process-variable scan, Sequence of Events mode with 1 ms resolution, and Low Latency mode with a 5 ms process-variable scan. It also provides internal diagnostics, galvanic isolation, open-wire detection in Normal mode, and optional redundancy.
For troubleshooting process trips, shutdowns, alarms, and other fast-changing discrete signals, the 1 ms SOE capability allows the control system to establish a much more precise event sequence than a conventional digital input module.
Key Features
🔹 32 Digital Input Channels — Provides high-density discrete signal acquisition in a single module.
⚡ 24 VDC Digital Inputs — Designed to accept discrete 24 VDC field signals.
⏱️ 1 ms SOE Resolution — Time-tags digital input transitions with millisecond-level resolution.
🚀 Low Latency Mode — Supports a 5 ms process-variable scan.
🔄 Normal Mode — Provides a 20 ms PV scan for conventional digital input applications.
🧭 Sequence of Events Mode — Intended for accurate event-order recording and post-event analysis.
🛡️ Galvanic Isolation — Electrical isolation is provided between the field interface and system electronics.
🔎 Open-Wire Detection — Available in Normal operating mode for detecting field wiring problems.
📊 Internal Diagnostics — Helps identify module and signal integrity problems.
🔁 Optional Redundancy — Can be configured for redundant applications using compatible IOTA hardware.
Technical Datasheet
🏷️ Brand: Honeywell
🔢 Model: CC-PDIS01
📌 Part Number: 51405042-176
🧩 Product Type: Digital Input Sequence of Events Module
📚 Product Family: Honeywell Series C I/O
🔢 Number of Inputs: 32 digital input channels
⚡ Nominal Input: 24 VDC
🔋 Input Voltage Range: 18–30 VDC
📥 ON Sense: ≥13 VDC or ≥3 mA
📤 OFF Sense: ≤5 VDC or ≤1.2 mA
⏱️ SOE Resolution: 1 ms
🔄 Normal PV Scan: 20 ms
🚀 Low Latency PV Scan: 5 ms
🛡️ Galvanic Isolation: Approximately 1500 VAC RMS / ±1500 VDC
🔬 Isolation Method: Optical isolation in the I/O module
🔎 Open-Wire Detection: Supported in Normal mode
🔁 Redundancy: Optional, depending on system configuration
📐 Approx. Dimensions: 24 × 18.8 × 6.5 cm
⚖️ Approx. Weight: 0.35–0.36 kg
📦 Listed Condition: New–Open Box
The electrical specifications above should be checked against the applicable Honeywell system documentation and the module nameplate before installation, especially when replacing an existing Series C I/O module.
Operating Modes
⏱️ Normal Mode
Normal mode provides a 20 ms PV scan and is intended for conventional digital input monitoring. Open-wire detection is available in this operating mode.
🕐 Sequence of Events Mode
SOE mode records digital state changes with 1 ms resolution. This is useful when several events occur within a short period and the operator needs to determine which signal changed first.
⚡ Low Latency Mode
Low Latency mode provides a 5 ms PV scan when faster process-variable updates are more important than the standard 20 ms scan.
Typical Applications
🏭 Process Control
Used for monitoring discrete signals from switches, contacts, relays and other field devices in process automation systems.
🚨 Shutdown & Trip Analysis
SOE recording can help establish the timing and sequence of signals associated with process trips and shutdown events.
⚙️ Industrial Machinery
Suitable for monitoring fast-changing machine status signals where event timing is important.
🔔 Alarm & Event Monitoring
The 1 ms timestamp capability can help engineers distinguish between simultaneous-looking alarms and identify the initiating signal.
🛠️ Maintenance & Troubleshooting
Internal diagnostics and open-wire detection can assist technicians when investigating field wiring or signal-quality problems.
Installation & Replacement Notes
🔧 Verify that the replacement module is exactly CC-PDIS01 / 51405042-176 before installation.
🔧 Confirm that the field devices provide compatible 24 VDC discrete signals.
🔧 Check the applicable IOTA before installation. Available documentation identifies CC-TDIL01 as a non-redundant IOTA option, while other system configurations may use different IOTA arrangements.
🔧 Verify whether the application requires Normal, SOE or Low Latency operating mode.
🔧 Check field wiring, polarity and terminal assignments before energizing the module.
🔧 After installation, perform a point-by-point input test and confirm that the controller correctly detects ON/OFF transitions.
🔧 For SOE applications, verify timestamp behavior using controlled input transitions before returning the system to service.
FAQ
Q: What is the Honeywell CC-PDIS01?
A: It is a 32-channel digital input Sequence of Events module for Honeywell Series C control-system applications.
Q: How many digital inputs does it provide?
A: The module provides 32 digital input channels.
Q: What input voltage does it use?
A: It is designed for 24 VDC discrete inputs, with available specifications identifying an 18–30 VDC input range.
Q: What is the SOE resolution?
A: The Sequence of Events function provides 1 ms resolution.
Q: Can it operate as a normal digital input module?
A: Yes. Normal mode provides a 20 ms process-variable scan for conventional digital input monitoring.
Q: Does it have a faster scanning mode?
A: Yes. Low Latency mode provides a 5 ms PV scan.
Q: Does the module support diagnostics?
A: Yes. Internal diagnostics are provided, and open-wire detection is available in Normal mode.
Q: Does it provide electrical isolation?
A: Yes. The documented configuration uses galvanic/optical isolation for the I/O interface.
Q: Can CC-PDIS01 be used in a redundant system?
A: Optional redundancy is supported when the module is installed in a compatible system configuration.
Q: What should I check before buying a replacement?
A: Confirm the complete part number, module revision, IOTA type, input voltage, redundancy requirement, connector arrangement and physical condition.
Other Honeywell Models You May Also Need
- Honeywell CC-PDIL01
- Honeywell CC-PDIS01
- Honeywell CC-PAIN01
- Honeywell CC-PAIH01
- Honeywell CC-PAIX01
- Honeywell CC-PAOX01
- Honeywell CC-TDIL01
- Honeywell CC-TDOR01
- Honeywell CC-TCNT01
- Honeywell CC-PCNT01
