Core Functions

Control-level DC power output and distribution

Motor magnetic field power supply

SCR gate drive and firing control

AC/DC signal monitoring, including armature current, magnetic field current, and line voltage

Cooling fan power supply

Input Specifications

Input voltage: 38–115 VAC

Source: Direct supply from the control power transformer

Frequency range: 0–500 kHz

Output Specifications

Control-level DC outputs:

+5 VDC

±15 VDC

±24 VDC

Fan power supply:

115 VAC

Circuit Configuration

Control power supply circuit

Magnetic field power supply circuit

SCR gate drive circuit

AC/DC signal monitoring circuit

Configuration & Adjustment

Jumpers: 12 configurable jumpers (JP)

Switches: 7 DIP switches (SW)

Enables adaptation to different drive and excitation applications and adjustment of SCR gate-drive parameters

Status Indication

LED indicators: 2 × red LEDs (power / fault)

Fuse indicator: 1 × neon lamp

Protection, Test & Interfaces

Protection: 3 onboard protective fuses

Test points: 5 voltage test points for rapid on-site measurement and fault isolation

Connectors:

18 plug-in connectors

9 additional plug-in connectors

Key Features
Integrated Power Supply & Feedback

Provides synchronized, stable control-level DC power and AC fan power

Real-time monitoring of key electrical signals ensures closed-loop stability of the system

Flexible Configuration

Jumper and DIP switch settings support multiple drive and excitation models

Allows flexible adjustment of SCR gate drive and feedback parameters

Fault Diagnosis

LED and neon indicators provide clear, intuitive feedback on power and fuse status

Test points enable fast voltage verification and troubleshooting

System Compatibility

Suitable for GE multi-series drive and excitation platforms

Particularly common in EX2000 excitation systems

Widely applied in gas turbine and industrial drive control applications