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Brand: DEIF
DEIF SGC 420 Mk II Single Genset Controller with Breaker Keys
Description
Genset controller with breaker keys, site battery and shelter monitoring
The DEIF SGC 420 Mk II has the functions needed to protect and control a genset, a genset breaker and a mains breaker. Compared with the SGC 120 Mk II, it has a larger front panel with dedicated mains and genset breaker keys, shutdown, warning and notification LEDs, an acknowledge key and a TEST mode. It also adds monitoring that is specific to remote and telecom sites: a differential site battery input and shelter temperature monitoring.
DEIF states that the controller can monitor the site battery and significantly reduce fuel consumption, and it also monitors engine and alternator parameters and true RMS voltage and current. Modes of operation are island, AMF, remote start and stop, auto exercise, cyclic, site battery monitoring and shelter temperature, night restriction mode and engine drive.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / series | DEIF, SGC Mk II (SGC application software R19) |
| Supply | 12/24 V DC nominal; operating range 8 to 32 V DC; reverse protection to -32 V DC |
| Current consumption | About 200 mA (excluding DC outputs); standby 180 mA at 12 V, 140 mA at 24 V |
| Genset voltage | True RMS; 32 to 300 V AC phase-neutral, 32 to 520 V AC phase-phase; 5 to 75 Hz |
| Mains voltage | True RMS; 32 to 300 V AC phase-neutral, 32 to 520 V AC phase-phase; 5 to 75 Hz |
| Current inputs | 3 genset phases plus earth leakage and fan current CT; -/5 A or -/1 A; accuracy ±1.4 % of nominal |
| Digital inputs | 9, negative switching, 5 mA current source |
| Analogue inputs | 5 resistive 10-5000 Ω; 2 voltage/current 0-5 V DC or 4-20 mA |
| Site battery inputs | 2 differential, range ±60 V, accuracy ±2 % of full scale |
| Digital outputs | 7 DC outputs: 5 A (terminals 3 and 4), 1 A (terminals 5 to 9) |
| Communication | USB 2.0 type B; RS-485 Modbus with built-in 120 Ω termination; CAN 250 kbps |
| Operating temperature | -20 to +65 °C; storage -30 to +75 °C |
| Protection degree | IP65 front with supplied sealing gasket |
| Dimensions / cutout | 233.0 x 173.0 x 38.5 mm; cutout 219.0 x 158.0 mm |
| Weight | 640 g without lock; 672 g with lock |
| Approvals listed | CE; UL/cUL Recognized to UL/ULC6200:2019 1st edition |
Protections
Generator protections include two stages each of voltage and frequency, unbalanced load, over-current, overload, low load, reverse power, phase reversal and earth leakage or fan current. Engine protections cover speed, battery, charging alternator, pre-heat, coolant temperature, oil pressure, fuel level, fuel theft and ECU communication failure and diagnostic lamps. Mains protections cover voltage, frequency and phase reversal, and other protections cover the site battery and shelter temperature.
Counters include running hours, start attempts, energy (kWh, kVAh, kvarh) and maintenance. Configuration is with Smart Connect Mk II over USB, with M-Logic for custom logic, and an SGC can be used as a remote display for another SGC controller using the RDC 100 software over CAN.
Which SGC to choose
Pick the SGC 420 Mk II for remote and telecom-type sites that need site battery and shelter monitoring, for installations where operators close and open breakers from the controller, or where the I/O count of the SGC 120 Mk II is too small. For small sets with simple I/O the SGC 120 Mk II is the more compact choice. Confirm the engine ECU protocol, sensor types, CT ratios and the breaker control scheme, and name the exact model including Mk II in the enquiry.
Documents and quotation
The DEIF data sheet is attached. For a quotation, send the model, quantity and engine details. Other generator control products are under Diesel Generator Spare Parts.
Datasheets & Documents
- Datasheet DEIF SGC 420 Mk II data sheet 4921240650 (EN) Download
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About brand
DEIF is a Danish, family-owned and independent manufacturer of control and protection devices for power generation, founded in a Copenhagen backyard in 1933 and now based in Skive. Seven Star LLC, an independent supplier in Muscat, quotes DEIF AGC, SGC and CGC genset controllers for standby plants, paralleling systems and engine-driven sets.
DEIF genset and power management controllers
DEIF describes itself as a supplier of power control solutions for decentralised power generation on land and at sea. Its genset controllers range from the compact SGC and CGC units to the AGC 150 and AGC-4 Mk II controllers, which add synchronisation and power management for plants with many gensets. DEIF data sheets state the supply range, I/O, protections and approvals of each controller.
Ordering DEIF controllers
Name the exact model and variant, the software package or option letters where they apply, the quantity and the engine make and ECU protocol. DEIF configures several controllers by variant and option, so the data sheet on each page should be checked against the project before a quotation is issued.
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Frequently Asked Questions
What does the SGC 420 Mk II add over the SGC 120 Mk II?
More I/O, a larger front panel with breaker keys and LEDs, earth leakage and fan current monitoring, and site battery and shelter temperature monitoring.
What is the supply range?
Nominal 12/24 V DC with an operating range of 8 to 32 V DC.
Does it support AMF operation?
Yes. DEIF lists island, AMF, remote start and stop, auto exercise, cyclic and engine drive modes.
How many digital inputs does it have?
Nine, negative switching. The configurable analogue inputs can also be used as digital inputs, as described in the SGC 420 Mk II user manual.
How is it configured?
With the free Smart Connect Mk II software over USB, with M-Logic for custom logic and data logging.
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