UBC717BE101 3BHE021887R0101 thyristor trigger controller module

UBC717BE101 3BHE021887R0101 thyristor trigger controller module
Product Overview
UBC717BE101 (3BHE021887R0101) is a Thyristor Firing Controller module produced by ABB in Sweden. It is the core control component of ABB AC 400F/AC 800F functional safety control system and medium high voltage variable frequency drive system. It is mainly used to send precise trigger pulses to controllable silicon (SCR/Thyristor) power devices to achieve phase control of high-power power equipment.

📌 This module is used in conjunction with UFC721BE101 (3BHE021889R0101, Functional Safety Controller CPU) to form a complete thyristor trigger+safety control link.

Model Interpretation
Meaning of field codes
UBC-ABB Unified Board Controller series identification
717- thyristor triggered controller class
B – Version/Revision Level
E – European Standard/EN Version
101- Sub model/Configuration Code
3BHE021887R0101- ABB Official Order Number
Core technical parameters
Parameter specifications
brand ABB
Product Name Thyristor Firing Controller Module
Order number 3BHE021887R0101
ABB AC 400F/AC 800F Functional Safety System/Medium and High Voltage Variable Frequency Drive
Trigger the thyristor (SCR)/thyristor power module of the object
Phase Shift Firing triggering method
Multi channel control channel (usually 6-12 pulses, supporting three-phase fully controlled bridge)
Synchronization signal with built-in synchronization detection (zero crossing detection+phase-locked loop PLL)
Given signal 0~5VDC/0~10VDC/4~20mA (optional)
Feedback signal constant voltage feedback (VF)+constant current feedback (IF), 0~5VDC
Communication interface RS422/RS485 (optional, extended through UFC721BE101)
Working voltage 24VDC
Working temperature -20 ° C~+70 ° C
Protection level IP20 (installed inside the cabinet)
Installation method: DIN 35mm rail installation
Production Status ⚠️ Stopped production, the market is dominated by inventory/disassembled parts
Core advantages include high-precision triggering (± 0.1 °), hardware safety interlocking, and SOE event recording
System architecture and working principle
┌──────────────────────────────────────────────────────────┐
│ ABB AC 800F Safety Control System │
│ │
│————————————————————————————-
│ │ UFC721BE101 │◄══════════════►│ UBC717BE101 │ │
││ Safety controller CPU │ (SDCI/Field │ thyristor triggered controller ││)
│ │ (Safety CPU) │ Bus) │ (Firing Control) │ │
│ └────────┬────────┘ └───────┬──────────┘ │
│ │ │ │
││ Given/feedback │ Trigger pulse │
│ ▼ ▼ │
│ ┌─────────────────┐ ┌──────────────────┐ │
││ Operator Station/DCS ││ Controllable Silicon Power Module ││
││ (Given signal) ││ (SCR/Twitter) ││
│ └─────────────────┘ └───────┬──────────┘ │
│ │ │
│ ┌───────▼──────────┐ │
││ High voltage motor/transformer ││
││ (Controlled Equipment) ││
│ └──────────────────┘ │
└──────────────────────────────────────────────────────────┘
working principle
Stage description
The synchronous detection module detects the zero crossing point of the power grid voltage in real time, and tracks the frequency and phase of the power grid through a phase-locked loop (PLL)
Given signal (0~5V/4~20mA) received from UFC721BE101 safety controller
Trigger angle calculation: Calculate the required trigger angle α (0 °~180 °) based on the given signal, and control the output power
Pulse generation generates high-precision trigger pulses (with adjustable pulse width, typically 500 μ s~2ms) to drive the thyristor to conduct
The safety interlock is linked with the safety controller, which automatically blocks the triggering pulse in case of a fault, achieving a safe shutdown
SOE records 1ms precision event sequence with timestamp for easy accident tracing
core advantage
Advantages Explanation
🔒 Functional safety complies with IEC 61508 SIL 3/EN 62061 Cat.4 and is compatible with UFC721BE101 safety CPU
⚡ High precision trigger trigger angle accuracy ± 0.1 °, ensuring smooth power control without impact
🔄 Multi pulse support supports 6/12/18/24 pulse rectification, adapted to different power levels
🛡️ Hardware safety interlock disconnection detection, overcurrent blocking, undervoltage locking, automatic shutdown triggering in case of failure
📊 Double closed-loop control with constant voltage (VF) and constant current (IF) dual feedback, PID regulation
🌡️ Wide temperature operation -20 ° C~+70 ° C, suitable for harsh industrial environments
🔌 hot-swapping ✅ Support online replacement without system shutdown
Typical application scenarios
Industry Applications
⚡ Excitation system of power turbine, thyristor rectification of generator, and switching of plant power
🛢️ Petrochemical reactor heating thyristor power regulation, ESD emergency shutdown
🏭 Metallurgical arc furnace electrode adjustment, rolling mill main drive thyristor speed regulation
🔧 Mine high-voltage frequency converter (ACS6000/ACS800MV) rectifier/inverter trigger
🏗️ Trigger of thyristor valve group for building high-power reactive power compensation (SVC/STATCOM)
💧 Large scale water pumps/fans with controllable silicon soft start speed regulation for water management
Constant pairing module (ABB AC 800F ecosystem)
Module model, order number, type, function
UFC721BE101 3BHE021889R0101 safety controller CPU system core, paired with UBC717BE101
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