INTKM01 | ABB Bailey Time Keeper Master Module

ABB Bailey INTKM01 Time Keeper Master Module

The ABB Bailey INTKM01 is a Time Keeper Master Module for the INFI 90 and Symphony Plus distributed control systems. It provides centralized time synchronization for Sequence of Events (SOE) systems, ensuring all event timestamps across the DCS network maintain a consistent and accurate time reference.

Key Specifications

• Part Number: INTKM01
• Product Type: Time Keeper Master Module
• Series: INFI 90 / Symphony / Harmony
• Manufacturer: ABB / Bailey Controls
• Power Requirements: 24 V DC nominal; 5 W typical (some sources list 25 W maximum)
• Clock Accuracy: ±2 ppm at 25°C
• Time Synchronization: Via network protocol (INFI-NET / Cnet)
• Backup Battery: Lithium 3 V, 5-year lifespan
• Communication Interfaces: Ethernet, RS-485, PROFIBUS, Modbus
• Operating Temperature: -20°C to +70°C (some sources: 0°C to +60°C)
• Storage Temperature: -40°C to +85°C
• Humidity: 5% to 95% non-condensing
• Dimensions: 3.6 × 31.5 × 17.7 cm (1.4" × 12.4" × 7.0")
• Weight: 0.3 kg (0.66 lbs)
• Protection: IP20
• Mounting: INFI 90 MMU rack slot or DIN rail

Features & Benefits

1. High-Precision Timekeeping: ±2 ppm accuracy ensures microsecond-level synchronization across distributed modules.
2. Battery Backup: Lithium battery maintains clock during power outages for up to 5 years.
3. Multi-Protocol Support: Ethernet, RS-485, PROFIBUS, and Modbus interfaces for flexible time distribution.
4. SOE Integration: Synchronizes with INSEM01/INSEM11 Sequence of Events Master modules for coordinated event recording.
5. Network Time Distribution: Broadcasts time reference to all Harmony control units (HCU) via Cnet.

Applications

• Sequence of Events (SOE) time synchronization
• Power plant disturbance recording
• Petrochemical safety system event timing
• Water treatment alarm sequence analysis
• Industrial automation time-stamped data logging

FAQ

Q: How does INTKM01 synchronize with external time sources?
A: The INTKM01 can accept time signals from GPS satellite receivers, IRIG-B time code generators, or NTP servers via its communication interfaces.

Q: What is the battery replacement interval?
A: The lithium backup battery has a 5-year typical lifespan. Replace when low-battery diagnostic alarm activates.

Q: Can INTKM01 operate as a standalone time server?
A: Yes. When connected to an external GPS or NTP source, the INTKM01 serves as the master time reference for the entire INFI 90 network.

Installation Guide

1. Install INTKM01 into INFI 90 MMU rack or DIN rail.
2. Connect 24 V DC power supply to designated terminals.
3. Wire time synchronization input (GPS, IRIG-B, or NTP) per system design.
4. Connect INFI-NET or Cnet communication cables to network interface.
5. Configure time zone, daylight saving, and synchronization interval via engineering software.
6. Verify time accuracy by comparing module time with reference clock.

Selection Tips

• Time Source: Specify GPS receiver, IRIG-B generator, or NTP server based on your plant infrastructure.
• Redundancy: For critical SOE applications, consider dual INTKM01 modules with automatic failover.
• Battery Spares: Stock lithium backup batteries (3 V) for scheduled replacement every 5 years.