Is the Schlage L9580 fail-safe or fail-secure?

Latch-retraction-only, not field-selectable. Powered equals latch retracted. No power equals latch extended and lock secured. Functionally similar to fail-secure but not the same as a switchable setting on a lever-control lock.

What voltage does the Schlage L9580 require?

24V DC, single voltage, no AC component. Peak current is approximately 1.4 amps at retraction, holding current approximately 0.1 amps. Input voltage range is 21.6V to 28V DC. Operating temperature is 32°F to 120°F with maximum 85% relative humidity.

Can multiple L9580 locks share one power supply?

Yes, with proper sizing. Peak current is roughly 1.4 amps per lock at retraction. Size the UL 294 power supply for simultaneous peak draw across all connected locks. Avoid sharing circuits with solenoid-based devices unless a 35V varistor is installed for transient voltage suppression at the solenoid equipment.

Can the L9580 retrofit an existing L9000 mortise pocket?

Yes. Same chassis dimensions as the L9000 series: 4-7/16" x 6-1/16" x 1". Drops in without frame modification. Wiring runs through the door. Backset is 2-3/4" only.

Does the Schlage L9580 work with auto operators?

Yes. Auto operator integration is one of the primary applications. The operator signals the lock to retract, then activates the door swing. Standard for accessible restrooms, infection-control entries, and hands-free corridors.

What is the difference between L9580 with RX and L9580 with LX?

RX is a request-to-exit switch that signals when the inside lever rotates. LX is a latchbolt monitor that signals whether the latch is extended or retracted. RX integrates with most access control panels for valid-exit logging. LX verifies door secured status for higher-security applications. Both can be combined on the same chassis.

Schlage L9580 Motorized Latch Retraction Guide|Security Parts

Quick Answer

The Schlage L9580 motorized latch retraction is a Grade 1 storeroom mortise lock that retracts its latchbolt on a 24V DC signal, releasing the door without requiring a key or lever press. Four things to know before specifying or ordering:

Voltage: 24V DC only. 12V will not actuate it. AC will damage the motor.
Fail mode: Latch-retraction-only, not switchable. No power equals latch extended and door secured.
Retrofit: Fits the standard L9000 mortise pocket with no frame modification required.
Monitor options: Available with RX (request to exit), LX (latchbolt monitor), or both.

Security Parts stocks the Schlage L9580 motorized latch retraction chassis with RX, with same-day shipping on stocked components. Call 845-935-0301 for LX or combined configurations.

What the Schlage L9580 Does

The Schlage L9580 is a Grade 1 mortise lock from Allegion's L Series running the storeroom function with motorized latch retraction (MLR), single outside cylinder, and 24V DC operation. The L9580 was released for access-controlled commercial openings where the door has to release on signal without anyone touching the lever. Auto operators, card readers, push-button stations, infection-control corridors, K-12 visitor entries, accessible restrooms. That's the role.

What spec sheets skip is when this lock actually beats an electric strike or a mechanical L9080, and when it doesn't. Here's the working breakdown from a commercial hardware sourcing perspective.

The L9580 runs the storeroom function: outside lever stays fixed (key-only entry from outside), inside lever is always free for egress. Standard institutional configuration for IT rooms, supply closets, mechanical rooms, and access-controlled service corridors.

Motorized latch retraction adds one capability on top of the mechanical storeroom: a 24V DC signal to the chassis tells an internal motor to retract the latchbolt. The door becomes pushable without anyone using the lever or key. When the signal stops, the latch springs back out. The lock secures itself the next time the door closes.

The unit also includes a deadlocking auxiliary latch, so the main latch can't be retracted by a credit-card shim once the door is closed. That's a Grade 1 physical security detail you don't get on lighter electrified hardware.

Schlage L9580 motorized latch retraction chassis with LX. View product page and order.

Where the Schlage L9580 Fits in the L Series Family

Allegion's MLR line splits into two groups. Latch-retraction-only: L9510 (passage), L9580 (storeroom), L9582 (institution). Latch-retraction-plus-lever-control: L9692EL/EU, L9695EL/EU, L9696EL/EU.

The L9580 sits in the first group. It retracts the latch on signal but doesn't electrify the lever itself. If your project needs the lever to lock or unlock electronically, you want the L9692/95/96 line instead. See the Schlage L9692EU motorized latch retraction guide for that specification path.

The L9580 shares chassis dimensions with the broader Schlage L Series mortise lock platform, which means it retrofits the same mortise pocket as a mechanical L9080. Frame stays intact. Wiring runs through the door. That's the structural reason this lock often wins over an electric strike on renovation work.

Trim, finish, lever style, and keyway options carry across the entire L Series. Standard keyway is patented Everest 29 S123, with Primus available for upgraded geographic exclusivity. For a full reference on Schlage key systems including Primus and construction keying, see the Schlage key systems guide. Cylinder formats include FSIC, SFIC, conventional, and less-cylinder. The L9580 is available in 12 finishes: 605, 606, 609, 612, 613, 619, 622, 625, 626, 629, 630, and 643e.

L9580 Certifications and Standards

The L9580 carries the following certifications relevant to commercial specification:

ANSI/BHMA A156.13 Series 1000, Grade 1: operational and security rating for mortise locks
UL 10C: positive pressure fire test; UL listed for 3-hour fire door assemblies
UL 294: access control system performance (Destructive Attack Level 1, Line Security Level 1, Standby Power Level 1, Endurance Level IV with RX; Endurance Level I with LX)
UL 437: when ordered with a UL 437 Primus cylinder
ICC A117.1: complies with Accessible and Usable Buildings and Facilities standard
BAA compliant: all functions meet Buy American Act requirements for government projects
California State Fire Marshal (CSFM) listed
Miami-Dade NOA and Florida Building Commission listings for impact and non-impact applications

For a full reference on how ANSI/BHMA grades apply to commercial door hardware specification, see the ANSI/BHMA door hardware standards guide. For fire door compliance requirements affecting UL 10C installation, see the commercial door fire rating guide.

Allegion Connect Wiring System

The Schlage L9580 ships with Allegion Connect, a factory-installed Molex connector system that simplifies installation and field maintenance. All electrical connections at the chassis use factory-installed Molex connectors rather than terminal block or wire-nut field connections. Field wiring connects to the chassis via the matching Molex connector at the installation point.

When servicing the chassis, the connector unplugs cleanly without cutting wires. This eliminates the wire re-termination step that causes most installation-error callbacks on electrified mortise locks. The CON-KIT provides field replacement connectors and terminals for maintenance situations where the connector itself is damaged.

As an alternative to Allegion Connect, the Molex connector may be cut off and the lock installed with traditional wire splicing methods. A 6-inch wiring harness is included with the chassis for situations where additional wire length is needed at the connection point.

For the broader integration of electrified mortise locks into a commercial access control system, see the access control integration guide.

Electrical Specifications That Determine Power Supply Sizing

24V DC only. Not 12V, not multi-voltage, not AC. A 12V panel won't actuate it. AC will damage the motor.

Peak current draws roughly 1.4 amps at the moment of latch retraction, then drops to around 0.1 amps holding current while the latch stays retracted. Sizing matters on multi-lock circuits: two L9580s firing simultaneously can pull close to 3 amps for a fraction of a second, even though average draw stays under one. UL 294 certified access control power supplies handle this if specified properly.

Critical install warning that most distributors skip: don't share a circuit with solenoid-based devices unless transient voltage is suppressed. Solenoids generate voltage spikes when they de-energize, and those spikes damage the L9580 motor. Schlage's installation document specifies a varistor rated at 35V (peak recurrent) installed at the equipment producing the transient. Leave it out, and the motor fails inside a year.

Fail-Safe vs Fail-Secure: How the Schlage L9580 Motorized Latch Retraction Operates

Most electrified L Series locks have a field-selectable fail-safe / fail-secure switch in the chassis. The L9580, L9510, and L9582 do not. They're latch-retraction-only and operate in a single mode: powered means latch retracted, no power means latch extended.

Functionally that's similar to fail-secure (loss of power equals locked). But it's not switchable. If the application requires fail-safe behavior under code (some egress doors, certain stairwells, specific assembly occupancies), the L9580 is the wrong function. A lever-control variant from the same family covers that case.

The underlying L Series chassis is UL listed for 3-hour fire door assemblies under UL 10C, which makes the L9580 appropriate for fire-rated openings under NFPA 80 inspection requirements. For storeroom function codes across the broader L Series, see the commercial lock function codes guide.

When the Schlage L9580 Beats an Electric Strike

Three reasons it usually wins on commercial buildings:

Frame integrity. An electric strike installation requires the frame to be cut and routed for the strike body. On older hollow metal frames, particularly fire-rated assemblies, that cut can be prohibited or compromise the rating. The L9580 retrofits the existing L9000 mortise pocket without touching the frame.
Security depth. An electric strike releases the keeper, but the latch on the lock stays extended. That works for most applications. On doors that face attempted forced entry, an L9580 with a one-piece mortise body and deadlocking auxiliary latch is structurally tougher than a strike plate cut into a frame.
Aesthetics. Electric strikes show a visible faceplate in the frame. The L9580 looks identical to a mechanical L9080 from the outside. Healthcare interiors, hospitality, and high-end commercial often spec mortise hardware specifically for the visual continuity.

Where electric strikes still make sense: simple retrofits where the existing mechanical lock is being kept and only access control is being added, and applications using cylindrical hardware on the door instead of mortise. For a detailed side-by-side comparison, see the dedicated Schlage L9580 vs electric strike guide and the broader electrified mortise lock vs electric strike guide. For electric strike parts and specifications, see the electric strike parts guide.

When a Mechanical L9080 Storeroom Wins Instead

Three scenarios point at L9080 over L9580:

No access control planned now or later. The MLR premium only pays back when something actually signals the lock. A storeroom that always operates by key doesn't need it.
No power available at the door. Running 24V DC to an opening that doesn't have it is a real install cost. If the electrical contractor isn't already on site, that wiring run can outweigh the savings of avoiding an electric strike.
Power instability. Older facilities or those without backup on access control circuits will see the L9580 cycle in and out of operability through the day. A mechanical L9080 is immune to that.

RX vs LX: Which Monitor Option Fits Your Access Control System

The L9580 takes two optional switches.

RX (request to exit) closes when the inside lever rotates, telling the access control panel that someone is exiting legitimately. Suppresses forced-entry alarms and logs valid exits. Most access control systems integrating with L9580 storerooms want RX. The RX switch is rated at 2A at 30V DC and is modular, meaning it can be added to the chassis in the field without opening the lock case.

LX (latchbolt monitor) signals whether the latchbolt is extended or retracted at any moment. Tells the panel whether the door is actually latched, not just closed. Specified for high-security openings where door position switch (DPS) data alone isn't enough. The LX switch is also rated at 2A at 30V DC. With LX installed, the UL 294 rating becomes Endurance Level I (vs Level IV without LX).

Both can be ordered together. Security Parts stocks the L9580 motorized latch retraction chassis with RX as the primary configuration. Call 845-935-0301 for LX-only or RX-plus-LX availability.

Install Mistakes That Damage the Schlage L9580

Three field errors cause most L9580 failures inside the first year:

Sharing a circuit with solenoid hardware without a 35V varistor for transient voltage suppression. This is the single biggest cause of premature motor failure. Solenoids generate voltage spikes when they de-energize, and those spikes damage the L9580 motor. The varistor must be rated at 35V peak recurrent and installed at the equipment producing the transient, not at the lock.
Wrong voltage at the lock terminals. 24V DC, correct polarity, no AC component. Multi-voltage panels feeding 12V to the lock won't actuate it, and the unit gets returned as defective when nothing was wrong.
Improper coordination with panic hardware on the same door. UL listing requires the L9580 to be installed so it doesn't interfere with exit device operation. On openings with both, mount them so they operate independently. The commercial exit device parts guide covers panic hardware specification if both are being sourced together.

How to Source the Right Schlage L9580 Configuration

Every L9580 order needs five specifications confirmed before the order ships:

Specification	Options / Notes
Trim and lever style	33 lever designs; knurled tactile warning available on select levers for ADA-compliant applications
Cylinder option	P, L, B, BD, R, F, T (or less cylinder if no keyed entry required)
Finish	605, 606, 609, 612, 613, 619, 622, 625, 626, 629, 630, 643e
Door thickness	Standard 1-3/4". Doors over 1-3/4" require position code (EE, EI, EO, ED) and thickness specification. Fits up to 4" thick doors.
Monitor option	RX (request to exit), LX (latchbolt monitor), or both. Handing is field-reversible and does not need to be specified at order.

For new spec, start at the L9580 motorized latch retraction chassis page and build the configuration up from there. For replacements, pull the model number and trim code off the existing lock face and match the same chassis variant.

The Schlage L Series parts and diagrams guide covers component-level sourcing if a single part (lever, escutcheon, cylinder) is what failed instead of the full chassis. For a broader look at L Series mortise lock parts, see the Schlage L Series mortise lock parts guide.

For LX-only configurations, less common finishes, or extended door thickness specifications, call 845-935-0301 to verify availability before placing the order.

For Division 8 specification of the L9580 in construction documents, see the commercial door hardware Division 8 specification guide. For a full catalog of Schlage commercial hardware parts organized by series, see the Schlage commercial hardware parts catalog and the L Series parts catalog. For mortise lock replacement parts and electric strike parts, browse those category pages directly.

The Schlage L9580 motorized latch retraction does one job well: it gives a Grade 1 mortise storeroom lock the ability to release on signal without compromising security or appearance. That's the right call on retrofits where the frame can't be cut, on healthcare and clean-room openings where quiet operation matters, and on access-controlled commercial buildings where mortise hardware needs to last twenty years.

Source it as a complete configuration. Confirm chassis, trim, finish, monitor option, and door thickness before the order ships. Security Parts has stocked Schlage commercial hardware since 2001. The team is reachable for spec verification at 845-935-0301. Two minutes on the phone prevents the wrong-configuration return cycle on a project that probably doesn't have those days to spare.

About the Author

This guide was written by the Security Parts team, a commercial door hardware specialist serving locksmiths, facility managers, general contractors, and access control integrators since 2001. Security Parts stocks Schlage L Series hardware including the L9580 motorized latch retraction chassis, with same-day shipping on stocked items and pre-order compatibility support at 845-935-0301.