The SIGMA IPM-RLA REV1.2 drive board is the heart of the MMR-series elevator inverter. Built around the intelligent PM50RLA120 / PM75RLA120 IGBT module, it delivers ultra-low stray-inductance power paths and on-board gate-drive redundancy, cutting dynamic losses and eliminating jitter-induced shutdowns. Plug-and-play with original LG-Sigma harnesses, it fits 6-person to 30-person lifts without hardware changes.
Key advantages
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100 % drop-in replacement—no cabinet wiring mods
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Conformal-coated PCB for 60 °C ambient reliability
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1-year warranty; CE & RoHS compliant
SPECIFICATIONS
| Item |
Detail |
| Model |
IPM-RLA REV1.2 |
| Core module |
PM50RLA120 (50 A 1200 V) or PM75RLA120 (75 A 1200 V) |
| Switching frequency |
2 – 8 kHz (default 4 kHz) |
| Supply voltage |
15 VDC ±5 % (on-board derived) |
| Peak gate current |
±6 A per IGBT |
| Isolation |
2.5 kV RMS opto-couplers |
| Operating temp. |
–10 °C – +60 °C |
| Humidity |
≤ 95 % RH non-condensing |
| PCB size |
200 mm × 120 mm × 1.6 mm |
| Mounting |
4 × Ø4.2 mm slots on 190 mm × 110 mm |
| Weight |
0.32 kg |
| Protection |
Over-current, under-voltage, over-temperature (via NTC) |
Package & Warranty
1 pc anti-static box; 20 pcs / carton.
12-month functional warranty from dispatch date.
Order today and keep your elevators running smoother, cooler and longer.