The SD-7202GC-PTQ is a request-to-exit plate from SECO-LARM, often used in access systems to allow people to exit a secured area without triggering an alarm or alert.
KEY FEATURES
- Large Push Button: Features a large, easy-to-push button, typically illuminated for visibility.
- High-Quality Stainless Steel Plate: The plate is durable and can withstand frequent use in high-traffic areas.
- Tamper-Resistant Design: This helps prevent unauthorized individuals from tampering with the device.
- N/O and N/C Contacts: These usually include open (N/O) and normally closed (N/C) contacts, offering flexibility in wiring and compatibility with various access systems.
- Easy Installation: The plate is usually for quick and straightforward installation in standard single-gang boxes.
This exit device is commonly used with magnetic locks, electric strikes, or other access control hardware, providing a secure yet user-friendly way to manage exits.
SD-7202GC-PTQ: HOW DO YOU REPLACE IT?
Follow these steps to replace the SD-7202GC-PTQ request-to-exit plate. Before starting, ensure you have the necessary tools (such as a screwdriver, wire strippers, and possibly a voltage tester) and have cut off the power to the access devices to ensure safety.
Turn Off the Power
Disconnect the power to the access devices to prevent any electrical hazards during the replacement process.
Remove the Existing Plate
- Use a screwdriver to remove the screws holding the existing SD-7202GC-PTQ plate in place on the wall or mounting box. After, carefully pull the plate from the wall, exposing the wiring connected to the push-button contacts.
Disconnect the Wiring
- Take note of how the wires are connected. You might find normally open (N/O) and normally closed (N/C) terminals, as well as a standard (COM) terminal. Besides, label each wire to reconnect them to the new plate more easily. Also, loosen the screws or clips holding the wires in place, and disconnect the wires from the terminals.
Install the New SD-7202GC-PTQ Plate
- Position the new SD-7202GC-PTQ plate near the mounting box. Basically, connect each wire to the corresponding terminal on the new plate (COM, N/O, or N/C), matching the same configuration as before. Also, secure the wires tightly to ensure a stable connection.
Mount the New Plate
- Carefully place the new plate into the mounting box. Besides, use the screws provided to secure it in place.
Restore Power and Test
- Turn the power back on to the access systems. Definitely, test the push-to-exit button to ensure it works properly, allowing access as expected and triggering the door release.
Final Check
Confirm the plate installation is secure, appropriately aligned, and functions as intended when pressed.
SD-7202GC-PTQ PARTS
The SD-7202GC-PTQ request-to-exit plate has several vital components that ensure it operates effectively within an control system products. Here’s a breakdown of its main parts:
01.
Stainless Steel Faceplate
This is the visible exterior part that users press to activate the request-to-exit function. The stainless steel material offers durability and resistance to wear and tear.
02.
Push Button
A large, illuminated button with a design that makes it easy to press for exit requests may be labeled “Push to Exit” or “Exit” and provides visual feedback to users.
03.
Illumination
Many versions include an LED or backlit feature that makes the button more visible in low-light conditions, indicating that the unit is powered.
04.
Mounting Plate/Bracket
A bracket or mounting plate that allows the unit to secure a single-gang electrical box or wall surface.
05.
Wiring Terminals
Terminals for connecting to the access system devices. These typically include:
- COM (Common): The common terminal used in wiring.
- N/O (Normally Open): The circuit is open unless you press the button, at which point it completes the circuit.
- N/C (Normally Closed): The circuit is closed until you press the button, breaking the circuit.
06.
Spring Mechanism
Inside the button assembly, a spring mechanism enables the button to return to its original position after being pressed.
07.
Tamper-Resistant Housing
Some versions have an additional tamper-resistant cover or design, making it more challenging for unauthorized individuals to tamper with the button or wiring.
08.
Screws and Hardware
Mounting screws and other hardware are required to install the plate securely to a wall or mounting box.
HOW DOES IT WORK?
The push-to-exit button plate is a simple yet effective component in a control system devices, typically used to unlock doors from the inside to allow people to exit securely.
Connection to the Access Systems
- The request-to-exit plate is wired to an access products or a locking mechanism, such as a magnetic lock or an electric strike.
- It has terminals labeled N/O (Normally Open), N/C (Normally Closed), and COM (Common) to accommodate different wiring needs:
- Typically Open (N/O): The circuit is open, meaning there’s no current flow until you press the button.
- Normally Closed (N/C): The circuit is closed, allowing current to flow continuously until you press the button, interrupting the flow.
Pressing the Button
When a person pushes the button, it completes (or interrupts) the circuit, depending on whether it is wired to the N/O or N/C terminal. Basically, this change in circuit state sends a signal to the control system products to release the locking mechanism, allowing the door to open.
Door Unlocking
Upon receiving the signal from the plate, the control system devices temporarily unlocks the door either by:
- Disengaging the magnetic lock (if present), which deactivates when the current flow is interrupted. Also, we activate an electric strike, which moves to an unlocked position and pushes the door open.
Illumination Feedback (if equipped)
The plate may have a built-in LED or illuminated button that lights up when the access devices is active. This illumination provides visual feedback, making the button easy to locate and confirming its operational status.
Resetting
After the person exits and releases the button, the spring mechanism inside the plate returns it to its original position. Definitely, the circuit then resets, restoring the door’s locked state and preparing the access products for the following user.
