Description
The Hathaway Process Instruments SER 4100 (Assy 309172) is a sophisticated Sequence of Events Recorder (SER) controller. This module is designed for high-resolution event logging in critical infrastructure—such as power utility substations, power plants, and large-scale industrial distribution centers. It monitors the state of various digital inputs (contacts, relays, and switches) and time-stamps every transition with millisecond precision, allowing operators to conduct accurate post-incident analysis and system fault diagnosis.
Product Specifications
📍 Product Series: SER 4100 Sequence of Events Recorder
⚖️ Weight: 1.8 kg
📏 Dimensions: Standard rack-mount module (3U height)
🌍 Country of Origin: USA
⚡ Operating Voltage: 24/48 V DC or 125/250 V DC (Version dependent)
🔄 Resolution: 1 millisecond time-stamping accuracy
🛡️ Protection Class: IP20
🌡️ Operating Temperature: -20°C to +60°C
🏗️ Mounting Type: 19-inch equipment rack
🔌 Interface: RS-232/RS-485 for host communication; Parallel port for local printing
Understanding Sequence of Events Recording
The SER 4100 acts as a “black box” for electrical systems. When a fault occurs (such as a breaker trip), it logs the exact sequence of relay operations and contact changes. This allows engineers to understand what happened first, which is crucial for determining the root cause of a cascading system failure.
Recommended Components and Services
🔍 309172-R: Factory-refurbished certified unit (recommended for legacy system support).
🔍 SER 4100 Input Card: Expansion module for increasing the number of monitored points.
🔍 Hathaway-SER-Link-Software: Configuration and data retrieval software for Windows.
🔍 309172-Battery-Backup: Internal module for maintaining time/date during power loss.
🔍 Hathaway-Printer-Interface: Legacy serial printer connection kit.
🔍 SER-4100-Backplane: Spare motherboard/chassis for module replacement.
🔍 Time-Sync-Module: GPS or IRIG-B interface card for time-clock synchronization.
🔍 Component-Level-Repair: Professional service for restoring aging control board logic.
🔍 Hathaway-Field-Terminal-Strip: Replacement plug-in blocks for input wiring.
🔍 Manual-309172: Original technical documentation for installation and event mapping.
Troubleshooting and Maintenance
- Time-Sync Errors: If the SER 4100 is losing its time-sync, the internal battery is likely depleted. Replace the battery periodically to avoid losing the time-stamp accuracy during a power outage.
- Input “Chatter”: If the unit logs multiple events for a single physical change, verify that your field wiring is properly shielded to prevent EMI from inducing “ghost” transitions.
- Data Retrieval: If you cannot download events, check the RS-232 communication settings (Baud rate, parity) in the software to ensure they match the controller’s DIP switch configuration.
