RS232 fault recorder PCS-996RC

GPSfiber opticRS485

Product overview
PCS-996RC disturbance and fault recorder records dynamic fault processes in power systems. The system consists of one control unit (PCS-996RC) and multiple acquisition units (PCS-996RA). Control and acquisition units communicate via point-to-point fiber optic links.

Control and acquisition units
The PCS-996RC control unit concentrates and monitors measurements from connected acquisition units. Each PCS-996RA acquisition unit samples and synchronizes analogue and digital signals. One control unit supports 1 to 4 acquisition units. Each acquisition unit provides 48 analog channels and 96 digital channels.

Typical configuration
1 × PCS-996RC + 2 × PCS-996RA = 96 analog channels and 192 digital channels

Alternative configuration
1 × PCS-996RC + (1~4) × PCS-996RA = (1~4)×48 analog channels and (1~4)×96 digital channels, up to 192 analog channels and 384 digital channels

Recording Functions

• Triggered recording

• Triggered according to user-defined criteria per channel
• Voltage and current variation
• Voltage and current over limit
• Phase imbalance
• Frequency variation and over limit
• Power swing
• Binary input change
• Manual trigger
• Remote trigger

• Continuous recording

• 24 hrs uninterrupted recording at 1000 Hz for 50 Hz systems and 1200 Hz for 60 Hz systems. One file per minute; retention up to 7 days.

• Long-term recording

• 24 hrs uninterrupted RMS recording at 1 Hz. One file per hour; retention over 3 months.

• Extract recording

• Automatically selects most relevant channels from a triggered file and creates a smaller COMTRADE file for faster transmission and quick review (typical set: 4 voltage channels, 4 current channels and relevant digital channels).

Auxiliary functions

• Self-diagnostic test
• Loss of DC power supply alarm
• Hardware circuit online detection
• IRIG-B time synchronization support

Communication

• 3 × RJ45 Ethernet ports supporting IEC60870-5-103 and IEC61850
• 1 × RS-485 serial port for GPS time synchronization
• 1 × RS-232 serial port for testing and configuration

Technical specifications

• Model: PCS-996RC (control unit) with PCS-996RA (acquisition unit)
• Control-to-acquisition connection: point-to-point fiber optic cables
• Acquisition unit channels: 48 analog channels and 96 digital channels per PCS-996RA
• System scalability: one control unit supports 1–4 acquisition units (up to 192 analog channels and 384 digital channels)
• Typical configuration example: 1 × PCS-996RC + 2 × PCS-996RA = 96 analog channels and 192 digital channels
• Triggered recording: user-defined criteria per channel (voltage/current variation, over limit, phase imbalance, frequency variation, power swing, binary input change, manual/remote trigger)
• Continuous recording rate: 1000 Hz for 50 Hz systems; 1200 Hz for 60 Hz systems; one file per minute; retention up to 7 days
• Long-term RMS recording: 1 Hz; one file per hour; retention over 3 months
• Extract recording: automatic channel selection and COMTRADE creation (typical: 4 voltage + 4 current channels plus digital channels)
• Time synchronization: IRIG-B supported; GPS via RS-485
• Protocols: IEC60870-5-103 and IEC61850 over Ethernet
• Communication ports: 3 × RJ45 Ethernet, 1 × RS-485, 1 × RS-232
• Export file format for events: COMTRADE