DEIF SCM-2 1044220110E

Product Introduction:
The SCM-2 is an intelligent synchronization and measurement module for DEIF Delomatic® 3/4 generator control systems. It monitors generator and busbar voltage, frequency, and phase angle; issues correction signals to the engine governor (speed) and AVR (voltage); and closes the breaker only when synchronism criteria are met. It also provides 3-phase measurement and basic protection functions.
Category:
Description
Key Features:
  • Automatic synchronization with adjustable deadbands for voltage, frequency, phase angle
  • Built-in 3-phase true-RMS voltage/current measurement
  • Generates 4–20 mA analog trim signals for speed and voltage regulation
  • Over/under voltage (ANSI 27/59) and over/under frequency (ANSI 81O/U) protection
  • ARC-net backplane communication with DEIF DGU/CM-2 controller
  • Front-panel LEDs for Power, Sync-in-Progress, Alarm/Fault
Technical Specifications:
  • Voltage Inputs:​ 100–690 VAC L-L, 50/60 Hz (VT primary/secondary programmable)
  • Current Inputs:​ 1 A / 5 A CT (≤0.3 VA burden)
  • Synchronization Accuracy:​ Frequency ±0.01 Hz; Phase angle ±1°–±2°
  • Outputs:​ 2× relay (breaker close / alarm — 250 VAC / 24 VDC, 8 A resistive); 2× analog 4–20 mA (speed & voltage trim)
  • Power Supply:​ 24 VDC (20–30 VDC range), typ. 3 W
  • Communication:​ ARC-net (Delomatic backplane); expandable via CM-2 for RS-232/485/MODBUS
  • Operating Temp.:​ –25 °C to +70 °C
  • Humidity:​ 5–95 % RH non-condensing
  • Approvals:​ CE, DNV, ABS, LR, BV, GL (marine type approved)
  • Mounting:​ 19″ rack insert into Delomatic DGU frame
Applications:​ Marine main/emergency switchboards, offshore platform genset paralleling, industrial CHP plant multi-genset synchronization, data-center standby genset auto-parallel.
Installation Notes:​ Verify VT and CT ratios are correctly programmed before energizing. Do not bypass sync-check relay in production. Test close-circuit with simulator before live commissioning.
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