Intermatic GRASSLIN FM1D14 Series - User Manual

FM1D14 Series
One Circuit Electronic
24 Hour or 7 Day Time Switches
FM1D14A
(surface mounting)
FM1D14E
(flush mounting)
APPLICATION
Time based control of lighting, ventilating, heating, cooling or other
electrical loads in commercial and industrial applications. The FM1D
Series time switches are programmable for 24-hour or 7-day sched-
ules.
The FM1D14A Series Time Switches are intended for either surface
or Din Rail mounting. The control is completely enclosed in a plastic
housing and includes a terminal cover and sub-base for installation
and hard wiring.
The FM1D14E Series Time Switches are intended for flush (panel)
mounting.
Both models are supplied with a clear plastic dust cover.
INSTALLATION
To the installer:
1. Read operating instructions carefully.
2. Check the input and output ratings marked on the unit to
make sure this product is suitable for your power supply and
application.
3. Disconnect power supply prior to installation to prevent elec-
trical shock.
4. Wire in accordance with National and Local electrical code
requirements.
SURFACE DIN RAIL MOUNTING—FM1D14A
Remove dust cover, loosen two screws on opposite corners.
Remove the housing that surrounds the time switch and the
terminal cover away from the base. Remove timer module by
pulling straight out. Place screws through 3 mounting holes in
base and screw to
back panel or wall.
Wire in accordance with instructions. Replace terminal cover
and push timer firmly onto base. Now replace housing and
secure with screws.
FLUSH MOUNTING—FM1D14E
Cut a square hole 2-5/8” x 2-5/8” (66mm x 66mm) in the front
of the panel. Insert the time switch through the opening. With a
screwdriver, press down and turn outer screws (A) until flanges
are in position to fasten the unit in front panel, then release.
Insert plugs into holes (B).
Use 1/4” quick connects and make connections in accordance
with the wiring diagram shown and applicable code require-
ments.
• Disconnect power prior to installation
• Connect FM1D14 wiring in accordance with all applicable national and local
electrical code requirements.
WARNING
Risk of Fire or Electric Shock
BA
B
A

Summary

FM1 D14 Series Product Identification

Product Description

One circuit electronic 24-hour or 7-day time switches for various electrical loads.

Application

Time-based control for lighting, ventilation, heating, cooling in commercial and industrial applications.

Installation and Safety

Safety Warnings

Critical warnings regarding risk of fire or electric shock during installation.

Surface DIN Rail Mounting (FM1 D14 A)

Procedure for attaching the FM1D14A model to a surface or DIN rail.

Flush Panel Mounting (FM1 D14 E)

Instructions for installing the FM1D14E model into a panel opening.

Overview

1. Function Description
2. Usage Features
3. Maintenance Features

The Grasslin FM1D14 Series is a range of single-circuit electronic time switches designed for precise control of electrical loads in commercial and industrial settings. These devices offer flexible programming for either 24-hour or 7-day schedules, making them suitable for a wide array of applications such as managing lighting, ventilation systems, heating, and cooling equipment. The series includes two primary models: the FM1D14A, designed for surface or DIN rail mounting, and the FM1D14E, intended for flush (panel) mounting. Both models are supplied with a clear plastic dust cover to protect the internal components.

Function Description

At its core, the FM1D14 Series time switch acts as a programmable controller that automates the switching on and off of electrical circuits based on a user-defined schedule. This automation capability is crucial for energy efficiency and operational convenience, allowing users to set specific times for various electrical loads to operate without manual intervention. The electronic nature of these time switches provides a high degree of accuracy and reliability compared to traditional mechanical timers.

The programming interface, visible on the device's front panel, typically includes buttons for setting the time, day, and specific ON/OFF events. The display provides clear feedback on the current time, day, and program status. Users can define multiple ON/OFF events throughout the day or week, tailoring the operation to specific business hours, occupancy patterns, or environmental needs. For instance, a user might program lights to turn on at dawn and off at dusk, or ventilation systems to operate only during peak business hours. The 24-hour and 7-day scheduling options provide the flexibility to account for different operational requirements on weekdays versus weekends, or to implement recurring daily cycles.

An important feature is the ability to override the programmed schedule. This is often indicated by a "Reset" or "OVR" (Override) button on the front panel. An override function allows for temporary manual control, which can be useful in situations where a deviation from the normal schedule is required, such as during special events, maintenance, or unexpected operational changes. After the override period, the device typically reverts to its programmed schedule, ensuring that long-term automation is maintained.

The internal clock of the FM1D14 Series is designed for accuracy, ensuring that programmed events occur precisely when intended. The electronic circuitry is robust, providing reliable operation over extended periods. The device's ability to handle a single circuit means it controls one specific electrical load or a group of loads connected to that circuit. This makes it ideal for dedicated applications where precise timing of a particular function is critical.

Usage Features

The FM1D14 Series is designed with user-friendliness and installation flexibility in mind.

• Mounting Options:

  • FM1D14A (Surface/DIN Rail Mounting): This model is highly versatile. For surface mounting, the device's base can be directly screwed onto a back panel or wall. It comes enclosed in a plastic housing with a terminal cover and a sub-base, facilitating secure installation and hard wiring. For DIN rail mounting, the device is designed to snap onto standard DIN rails, a common practice in industrial control panels for quick and organized installation. The process involves removing the dust cover, loosening screws, detaching the housing and terminal cover, and then securing the base. Wiring is then completed, and the components are reassembled.
  • FM1D14E (Flush/Panel Mounting): This model is designed for a clean, integrated look within control panels. Installation involves cutting a square hole in the panel, inserting the time switch, and then securing it using outer screws that engage flanges to fasten the unit. Plugs are then inserted into holes to finish the installation. This method provides a flush finish, minimizing protrusion from the panel surface.

• Programming Interface: Both models feature an intuitive front-panel interface with a digital display and control buttons. The display typically shows the current time, day, and programming prompts, making it easy for users to navigate through settings. Buttons are clearly labeled for functions like "Timer," "Day," "h+" (hour increment), "m+" (minute increment), "Reset," and "OVR" (Override). This straightforward design allows for quick and efficient programming of ON/OFF events.

• Clear Dust Cover: Both the FM1D14A and FM1D14E models are supplied with a clear plastic dust cover. This cover serves a dual purpose: it protects the display and control buttons from dust, dirt, and accidental damage, and it allows for easy visual inspection of the device's status without needing to open or remove anything.

• Wiring Connections: The FM1D14E model specifically utilizes 1/4" quick connects for wiring. This type of connector simplifies the wiring process, making it faster and more secure than traditional screw terminals in certain applications. For all models, wiring must comply with national and local electrical code requirements, ensuring safety and proper operation. The manual emphasizes checking input and output ratings to ensure compatibility with the power supply and application.

• Application Versatility: The ability to program for 24-hour or 7-day schedules makes these time switches highly adaptable. They can manage daily recurring tasks, such as turning on and off exterior lighting, or more complex weekly schedules, like adjusting HVAC operation based on business days versus weekends. This flexibility is key for optimizing energy consumption and operational efficiency across various commercial and industrial environments.

Maintenance Features

The Grasslin FM1D14 Series time switches are designed for reliability and minimal maintenance, typical of electronic control devices. However, certain aspects contribute to their longevity and ease of service if needed.

• Robust Construction: The devices are housed in durable plastic enclosures, providing protection against environmental factors commonly found in commercial and industrial settings. This robust construction helps to ensure long-term operational integrity.

• Clear Dust Cover: As mentioned, the clear plastic dust cover not only protects the controls but also helps to keep the internal components free from dust and debris, which can otherwise accumulate and potentially affect performance or lifespan. This passive maintenance feature reduces the need for frequent cleaning of the control interface.

• Modular Design (FM1D14A): For the FM1D14A model, the design allows for the removal of the timer module by pulling it straight out after loosening screws and detaching the housing. This modularity could potentially simplify troubleshooting or replacement of the core timing mechanism if a fault were to occur, without needing to completely dismantle the entire installation. This design consideration can reduce downtime and simplify servicing.

• Compliance with Electrical Codes: The emphasis on wiring in accordance with all applicable national and local electrical code requirements is a critical maintenance-related feature. Proper installation, adhering to these codes, ensures that the device operates within safe electrical parameters, minimizing the risk of electrical faults, overheating, or other issues that could lead to premature failure or require extensive repairs. Correct wiring also ensures that the device receives the appropriate power supply, which is vital for its electronic components.

• Pre-Installation Checks: The instruction to "check the input and output ratings marked on the unit to make sure this product is suitable for your power supply and application" is a preventative maintenance step. Ensuring compatibility before installation prevents potential damage to the device or the connected load, thereby extending the lifespan of the entire system.

• Disconnect Power Warning: The prominent "WARNING Risk of Fire or Electric Shock" and the instruction to "Disconnect power prior to installation" highlight a crucial safety and maintenance protocol. This ensures that any work performed on the device, whether during initial installation or subsequent servicing, is done safely, protecting personnel and preventing damage to the unit from accidental short circuits or power surges during handling.

In summary, the FM1D14 Series time switches are designed to be reliable, easy to install, and user-friendly, with features that contribute to their long-term performance and straightforward maintenance.

Intermatic GRASSLIN FM1D14 Series Specifications