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The Lockwood 3782EL is an advanced electric mortice lock designed to provide enhanced security and convenience in various applications. It represents a significant evolution from the previous 3582 series, incorporating numerous feature improvements and field-selectable options. This guide focuses on troubleshooting common issues and understanding its operational nuances, particularly concerning its electrical control and monitoring capabilities.
The 3782EL is primarily an electric mortice lock, meaning its locking and unlocking functions are controlled electronically, typically by an access control system. It integrates a motor drive design for reliable operation and includes inbuilt sounders and LED indicators for visual and audible feedback on its status. The lock is designed for both residential and commercial applications, offering a robust solution for door security.
The lock offers flexible control modes, specifically 2-Wire and 3-Wire configurations, though 3-Wire control is strongly recommended for optimal performance and feature utilization, especially in PTO (Power to Open) mode.
In this mode, the lock receives constant power on its positive (red) and negative (black) wires. The locking/unlocking trigger is achieved via a positive (+) signal on the control wire (green). This constant power supply allows for continuous operation of features like LED indicators and ensures the lock's energy storage capabilities are maintained. When using a separate power supply for the control line, it's crucial to tie the common/negative lines of both power supplies together to ensure proper circuit completion and lock operation. Failure to do so will render the lock inoperable.
While available, 2-Wire control is generally not recommended, particularly in PTO (Fail Secure) mode. In this configuration, the red and green wires are connected together and switched to control the lock. When in the locked state in 2-Wire PTO mode, the lock receives no power. An unlock command from the access control system sends power to the lock. For the lock's energy storage to regenerate sufficiently for re-locking, power must be present for at least 5 seconds. Therefore, it's critical to avoid "Door Relock on Door Open" functions in the access control system that might cut power prematurely. The programmed 'Door Unlock' period should be set to a minimum of 5 seconds to ensure adequate charging of the lock's energy storage. An adaptor kit (SP3782EL-251) is available for 2-Wire control, which joins the red and green wires and includes new Lock Status, DPS reed switch, and Deadlatch monitors.
The 3782EL provides several monitored outputs for integration with access control systems, including Door Position (DPS), Deadlatch Monitor, Lock Status Monitor, REX (Request to Exit), and KOM (Key Override Monitor). Most access control systems share common inputs for these monitors. If there are insufficient wires for 3-Wire control, some of these common outputs (9, 10, 14, & 16) can be connected together to salvage a spare wire for 3-Wire control. This allows for a minimum of 6 wires to achieve individual monitoring outputs for all functions. Alternatively, several monitoring outputs can be placed in series to provide a single output, further saving wires. However, REX and KOM outputs should ideally remain as individual outputs due to their unique functions.
The lock incorporates LED indicators within the lock body, which are initially de-activated. These LEDs provide visual feedback on the lock's status. In 3-Wire mode, continuous LED operation is possible. However, in 2-Wire mode, especially 2-Wire PtO, the LEDs will turn off after 10 seconds. If the LED shines red briefly and then green after an unlocking signal, it indicates the lock is confirming it is definitely unlocked. If the lock is powered in 2-Wire PtO, the LED will be off until a locking signal is received, at which point it will briefly turn red before turning green upon unlocking. For retro-fit installations with old LED furniture, new 4800 lens furniture will be required, as an adaptor kit is not available. The 4800 lens furniture also requires an extra hole to be drilled above the top furniture mount hole.
The inbuilt sounder provides audible feedback for various operational states and errors:
This configuration allows for different access control behaviors on each side of the door. It requires the lock to be operated in 3-Wire mode; it will not function as expected in 2-Wire mode. When entering a power failure state, the PtO side will flash green and then red, which is normal behavior due to a minor delay in sensing the power failure.
The lock can be powered via its main connector (9-28VDC) or a micro-USB connector. The micro-USB can be connected to a power bank, PC, or mobile phone charger, which is useful for on-site LED activation or initial setup without full cabling. When powering via USB, setting changes will take effect after 30 seconds. For immediate response, briefly pressing the LED and mode button will change the lock to and remain in the failed state, with normal operation resuming once powered through the main connector.
The 3782EL is completely backwards compatible with the old 3582EL, and a 9-12 pin adaptor (SP3782EL-251) is available for replacement scenarios.
By understanding these features and troubleshooting steps, users can effectively manage and maintain the Lockwood 3782EL electric mortice lock for optimal security and performance.
General| Brand | Assa Abloy |
|---|---|
| Model | LOCKWOOD 3782 |
| Category | Door locks |
| Backset | 60mm |
| Finish | Satin Chrome |
| Fire Rated | Yes |
| Locking Mechanism | Mortice |
| Type | Mortice Lock |
| Door Type | Metal |
| Door Thickness | 32-50mm |
| Keying | Keyed Alike |
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