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Bard Comprehensive Guide to Economizer Systems and MV4000 Controller Functionality

Models: MV4000

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controller wiring

The MV4000 can be used for controlling two (2) air conditioners with or without economizers. It can also be configured for two (2) heat pumps without economizers. Units with economizers will connect differently than units without economizers; therefore, it is important to use the correct connection diagram.

There are older style EIFM economizers and newer style ECONWMT economizers that the MV4000 controller system can work with, and also an option for a remote Ethernet communication board. Therefore, it is important to select the correct low voltage hook-up diagram. See Table 1 — Hook-Up Diagram Selection.

security (Locking) feature

The MV4000 controller can be locked such that unauthorized persons cannot make any changes to temperature set points or any other selectable parameters of the controller system.

The ON/OFF and Comfort buttons remain fully active for their normal intent. The Advance/Change/ Save button remains active for the Advance feature only, which allows the position of the lead and lag air conditioners to be swapped (reversed). The Program button remains partially active - allowing the review of temperature sensor(s) actual reading of temperature, and the current settings/choices that have been chosen. However, no changes can be made when the controller is locked, and if the change button is pressed when in the Program mode, the display will come up showing “Locd” instead of flashing the selectable choices for that parameter. The default (DEF) reset capability is also disabled when the controller is in locked mode.

Locking and Unlocking the MV4000 Controller:

1.Locking the controller requires using 3 buttons while the controller is in the normal operating (run) mode.

2.Press and hold the Advance/Change/Save button and the Up and Down arrow buttons simultaneously for 20 seconds until the display shows “Locd”.

3.To unlock the controller, press the Change, Up and Down arrow buttons simultaneously for 20 seconds until the display reads “uLoc”.

Generator run / economizer shutdown feature

If desired, the MV4000 controller can be signaled from a standby generator system to lockout (disable operation of the) lag air conditioning system and close economizers if active. This is sometimes mandated if the generator size is not sufficient to handle the building load (amperage) and that of both air conditioning systems.

A normally closed (NC) dry contact as part of generator controls is required. These contacts must open when the generator is started, and such action will signal the MV4000 controller to this condition and disable lag air conditioner run function and close economizers if active.

A wire jumper is factory-installed across the Generator Run / Economizer Shutdown terminals. To utilize the generator run feature, remove the jumper from Generator Run / Economizer Shutdown, and connect the generator normally closed (NC) contacts that will open-on-run generator condition to the Generator Run / Economizer Shutdown terminals.

backup dc power connection

There are input connections available for -24VDC or

-48VDC (-20 to -56V) backup power connection. Making this connection will maintain microprocessor operation, front panel display, LED signaling, and alarm relay operation during periods of commercial power outages and when no standby generator is available. This circuit is protected by a replaceable .5A (500mA) 250V fuse.

IMPORTANT: The shelter DC battery power must be connected to the controller and wired as shown in controller wiring diagrams.

The backup DC power connection is polarity sensitive. If polarity is reversed, the controller will not function on backup power, no display and no alarm functions will be evident.

Manual

2100-571A

Page

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Bard MV4000 Controller wiring, Security Locking feature, Generator run / economizer shutdown feature
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MV4000 specifications

The Bard MV4000 is a groundbreaking mobile video platform designed to revolutionize the way organizations manage and distribute video content. This versatile device is particularly notable for its robust features, advanced technologies, and user-friendly characteristics, making it an indispensable tool for various industries, including education, security, and entertainment.

One of the standout features of the Bard MV4000 is its high-definition video capture capabilities. The platform supports 4K resolution, ensuring that every detail is captured with stunning clarity. This makes it an ideal solution for applications where image quality is paramount, such as live events or surveillance operations. The MV4000 is equipped with multiple camera inputs, allowing users to connect various types of cameras, including PTZ (pan-tilt-zoom) cameras for versatile shooting options.

Another significant advantage of the Bard MV4000 is its advanced streaming technology. The device supports a wide range of streaming protocols, including RTMP and HLS, facilitating seamless content delivery across different platforms. This flexibility ensures that users can easily broadcast live events over the internet or integrate the device into existing workflows without significant technical hurdles.

The MV4000 also features an intuitive user interface, making it accessible to users of all skill levels. The touchscreen controls simplify the setup and operation of the device, allowing video producers to focus on content creation rather than technical complexities. Additionally, the platform's built-in editing tools enable users to perform real-time adjustments, enhancing the overall production quality without the need for extensive post-production work.

In terms of connectivity, the Bard MV4000 excels with its multiple options, including Wi-Fi, Ethernet, and cellular connectivity. This versatility allows users to remain connected in various environments, from remote locations to urban settings. The device further supports various storage options, ensuring that users can save and access their video content with ease.

Finally, the Bard MV4000 is designed with durability in mind. Its rugged casing and robust construction make it suited for field use, ensuring it can withstand the rigors of outdoor applications. With its combination of high-definition video capabilities, advanced streaming technologies, user-friendly interface, versatile connectivity options, and durability, the Bard MV4000 stands out as a premier mobile video solution for today’s dynamic multimedia landscape.