Print this page
LCM-320 / LEM-320 Loop Control and Expander Modules
General Description
- The LCM-320 Loop Control Module and the LEM-320 Loop Expander Module provide NOTIFIER’s ONYX® Series of Fire Alarm Control Panels (FACPs) with Signaling Line Circuits (SLCs). The ONYX® Series NFS-640/NFS2-640 supports one LEM-320; the NFS-3030/NFS2-3030 supports up to five LCM- 320s and five LEM-320s. The LEM-320 module is used to expand the NFS-640/NFS2-640 to a second loop, and to expand each LCM-320 used on the NFS-3030/NFS2-3030 — each NFS-3030/NFS2-3030 LCM-320 supports an expansion LEM-320.
• Up to 12,500 feet (3,810 m) on a Class B (Style 4) SLC loop (twisted-unshielded).
• Built-in degraded mode increases survivability.
• Very simple installation — plug-in style.
• Permits multiple loops in small enclosure
- Voltage: 24 VDC nominal, 27.6 VDC maximum.
- Maximum loop length: The maximum wiring distance of an SLC using 12 AWG (3.1 mm²) twisted-pair wire is 12,500 feet (3810 m) per channel. For a twisted-unshielded pair, 12 AWG(3.1 mm²) to 18 AWG (0.78 mm²):
– Distance with 12 AWG: 12,500 ft (3,810 m).
– Distance with 14 AWG: 8,000 ft (2,438 m).
– Distance with 16 AWG: 4,875 ft (1,486 m).
– Distance with 18 AWG: 3,225 ft (983 m).
– 50 ohms maximum per length of Style 6 & 7 loops.
– 50 ohms maximum per branch for Style 4 loop. - Maximum current: for LCM-320: 130 mA; for LEM-320: 100 mA; for single SLC loop: 400 mA maximum.
- NOTE: Maximum short circuit — loop will shut down until short-circuit condition is corrected.
- Maximum resistance: 50 ohms (supervised and powerlimited).
• UL: S635
• ULC: S635/CS118
• FM Approved
• CSFM: 7165-0028:224, 7170-0028:223 (LCM/LEM-320 with NFS-3030/NFS2-3030). 7165-0028:214, 7170- 0028:216 (LEM-320 with NFS-640). 7165-0028:243, 7170- 0028:244 (LEM-320 with NFS2-640).
• FDNY: COA#6025 (LEM-320 with NFS2-640)
• FDNY: COA#6026 (LCM-320/LEM-320 with NFS2-3030)
• City of Denver
• Hong Kong