Regularly backup your OnGuard database and controller configurations.
If the LNL-3300-M5 is the physical first or last device on the RS-485 bus, install a 120-ohm resistor across the data lines or activate the onboard termination jumper. Hardware Configuration (DIP Switches)
Locate the primary AC breaker or DC fuse feeding the Micro/5 enclosure and disconnect power before touching any boards. lenel lnl3300m5 installation manual upd top
Relays are dry contacts rated for 2 A @ 30 VDC. Always use surge suppression (such as a MOV or diode) across the lock payload to protect the onboard relays from inductive kickback.
Verify that all physical wiring paths match the pinouts provided above. Relays are dry contacts rated for 2 A @ 30 VDC
Supports up to 32 downstream device addresses and up to 64 doors. 2. Pre-Installation and Mounting
In the world of enterprise access control, few names carry as much weight as Lenel. Their Onguard system is the gold standard for large-scale security management. At the heart of many high-security installations is the —a powerful, two-door intelligent system controller (ISC) that serves as the backbone for card readers, input monitors, and output relays. Supports up to 32 downstream device addresses and
is a highly capable intelligent controller designed specifically to modernize legacy security systems. It serves as the cornerstone of the migration strategy, allowing for a straightforward upgrade from older CASI M5, M3000, and similar systems to the advanced Lenel OnGuard platform. This article provides a comprehensive overview based on the LNL-3300-M5
RS-485 (communicates with standard Lenel or Mercury hardware) Supports up to 32 board addresses Memory 15 MB on-board flash memory Backup Battery 3 V lithium (type BR2325, BR2330, or CR2330)