SGC 420 & 421
Single genset controller
The SGC 420/421 controller is designed for AMF applications with a mechanical and electronically controlled engine (CANbus) and features advanced battery charge management.
The SGC 420/421 controllers are modern genset controllers for both AMF applications with a mechanical and electronically controlled engine (CANbus) plus AMF applications with electronic governor.
The controllers provide you with a user-friendly interface and full graphics LCD and include voltage and frequency measurement for mains and gensets, and electrical load measurement (true RMS).
Configurable analogue and digital inputs/outputs are provided for various features.
Modbus over RS-485 and CAN ports are available for remote communication.
Start and stop gensets remotely using the Remote start/stop function.
Deep sleep mode is a useful feature that extends the battery lifetime by suspending the normal controller functions of when the genset is off.
The controller monitors engine safety, electrical load, site battery backup voltage and shelter temperature to reduce fuel consumption.
Configure parameters easily from a PC using DEIF Smart Connect utility software. Connect to the PC through the controller's USB Type B port.
In addition, the SGC 421 controller also includes an integrated electronic governing function.
Technical specifications
maximum standby current:
• 180 mA, 12 V DC
• 140 mA, 24 V DC
• 1 A (additional) for the actuator
Crank-start dropout survival period
• 50 ms for a drop from 12/24 V DC
Charging alternator interface
• 0.25 A, 12 V DC
• 0.125 A, 24 V DC
• Diagnostic voltage measurement Digital outputs
• 5 x 1 A, configurable for pre-heat, horn and more
• 2 x 5 A, configurable for start relay, stop solenoid, fuel relay, contactors and more Digital inputs
• 9 x switch-to-ground inputs for lube oil, temp, fuel level and more Analogue inputs
• 5 x resistive inputs (10 to 5000 Ω), configurable
• 1 x 4 to 20 mA (LOP) / 0 to 5 V input
• 1 x 0 to 5 V input
• 1 x differential input (± 60 V DC) for site battery voltage Mains/genset voltage measurement
• 32 to 300 V AC RMS, 5 to 75 Hz for phase-to neutral Load current measurement
• Nominal: -/5 A for current transformer (CT) secondary
• 4 CT inputs CANbus for engine interface
• Baud rate: 250 kbps • Packet size: 8 bytes
• Termination resistor of 120 Ω, internally mounted E-governor module interface (SGC 421 only)
• 1 A, 2-phase output for rotary actuators
• 2.5 ± 2 V input for target speed bias
• 2.5 V for zero bias Dimensions
• External dimensions: 233 mm x 173 mm x 38.5 mm
• Mounting panel cut-out: 219 mm x 158 mm
Approvals
• CE approved: ▫ Comply to the EU Low Voltage Directive: EN 61010-1 Safety requirements for electrical equipment for measurement, control, and laboratory use - Part 1: General requirements ▫ Comply to the EU EMC directive EN 61000-6-2, 4
• UL
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