A Detailed Guide to Johnson Electric Metasys AS Series

The Johnson Electric Metasys AS Series consists of modules that are very useful in various automation, BMS, and HVAC systems. In this article, we will discuss these modules in detail, including variable air volume box controllers, Cable kits, digital unitary type of controllers, volume modular assembly controllers, Air Handling Unit boards, Damper Actuator Assemblies, etc. We will look into their specifications like power supply, operating frequency, certifications, the number of input and output terminals, power consumption, types of buses and interfaces they support, dimensions, etc. These modules represent a wide array of options designed to improve HVAC systems’ effectiveness, control, and versatility. Each module in this series represents the pinnacle of design and usefulness, from specialist controllers like the AS-UNT111-1, built for precise unitary system administration, to adaptable components like the AS-AHU-102-0, skilled at integrating numerous types of equipment. This overview sheds light on the complex features, wide range of uses, and significant influence of the Johnson Electric Metasys AS Series.

General Specifications of the AS Series:

Power Supply:

The Metasys AS Series ensures constant and steady operation by operating consistently on a 20-30 VAC power source. This standardized power supply is the foundation for many Automation, BMS, and HVAC systems to operate dependably.

Certifications and Compliance:

Strict adherence to standards like IEEE, VDE, FCC Part 15, CSA Certification, UL Listing, and others guarantees that every module fulfills the most exacting requirements for quality and safety. These accreditations attest to the dependability and respect for industry norms.

Input Channels:

The Metasys AS Series has a range of analog and binary input capabilities, from 6 to 8 analog inputs and 6 to 8 binary inputs. These diverse input channels make Accurate data collection for various system configurations possible.

Output channels:

The AS Series has several analog and binary output channels with a flexible range of output capabilities. These channels, which have 6–4 analog outputs and 10–8 binary outputs, provide reliable control and signaling operations.

Bus Support and Interfaces:

The AS Series features comprehensive support for Zone Bus and N2 Bus, allowing for easy networking and communication in larger system topologies. To improve communication, these modules also provide a variety of interface choices, such as terminal blocks and 8-pin phone jacks.

Mounting and Dimensions:

The AS Series modules provide versatility in installation by supporting many mounting methods, such as screw surface attachment and DIN rail. The physical dimensions seamlessly incorporate current setups like 279.4 × 203.2 × 101.2 mm for AS-UNT110-0.

Operating Conditions:

The Metasys AS Series’ operating conditions cover a variety of temperature ranges that are unique to each module (-40 °C to 158°F, 0°C to 60°C, etc.). These modules remain operationally intact when operating in the 10% to 90% relative humidity range. This versatility guarantees flexibility in a range of settings, satisfying demanding specifications in diverse climates for dependable performance.

Operating Frequency Range:

The 50–60 Hz frequency range in which the Metasys AS Series works guarantees effective operation and interoperability with power supply frequently found in a variety of systems.

Current Rating:

The current rating of the Metasys AS series is reliable and usually falls between 0.5 and 1.5 amperes. This dependable current standard provides consistent and ideal power consumption within this specified range, which guarantees effective and steady functioning across various modules.

Specialized Features:

Every module in the AS Series has unique and specialized features. These include techniques for room resets, TRIAC load management, cooling control schemes, and other cutting-edge technologies that augment the functionality of the modules.

Metasys Systems:

 AS-AHU-102-0:

The Metasys AS-AHU-102-0 is an Air Handling Unit Board. This module works with a power supply operating at 24 VAC, 50/60 Hz. It can withstand ambient temperatures ranging from 32°F to 122°F (0°C to 50°C) and humidity levels from 10% to 90% RH. Furthermore, several certifications, such as IEEE 472, IEEE 518, CSA C22.2 -205, FCC Part 15, UL916, UL864, IEEE 587 category A+B, and others, attest to its adherence to strict quality standards. Eight analog inputs, eight binary inputs, ten binary outputs, and six analog outputs are all part of its architecture. This adaptability allows for the smooth integration of mixed air single or dual channels and 100% outside air single or dual paths with a wide range of primary equipment types. This module’s integrated control techniques present a complete view of flexibility. It includes room reset methods for heating, return/exhaust air management, and tactics like hot/cold deck reset from the coldest or warmest zone. It also covers various systems, from room-based cooling control to the subtle manipulation of discharge setpoints. The module’s heating, cooling, and preheating settings are particularly noteworthy for their careful handling of various situations. The range of settings includes lockout logic, staged electric heating, modulated coils, and 2-position control, all of which provide excellent performance under a variety of environmental conditions. Because of its high degree of technological sophistication, the AS-AHU-102-0 is positioned to play a crucial role in complete HVAC systems, accommodating a broad range of conditions and demands.

  AS-CBL100-0:

The Metasys AS-CBL100-0 is a Cable Kit emphasizing connectivity and functionality among the AS series. Ten cables in total, including Quick Connect cables, FMK100, and RLY050/100/020 cables to meet various integration needs, are included in each package. The 3-feet (0.9 meter) Quick Connect Cables provide flexible connectivity choices by connecting two binary outputs to 2 relays, increasing system design flexibility. It can easily work in the temperature range of -40 to 158 degrees Fahrenheit, ensuring stability whether stored or not in use. The 5-Wire Cables are easy to handle and install since they are lightweight yet have extensive capability, weighing only 0.02 pounds apiece. All things considered, the AS-CBL100-0 appears to be a solution with a specific goal in mind, painstakingly designed to meet connection requirements while preserving robustness in a wide range of environmental circumstances.

AS-UNT110-0:

The AS-UNT110-0 module from Metasys emphasizes careful data collection and has six analog and six binary inputs. It has binary outputs, which vary from 4 to 8, and analog outputs, which range from 0 to 4. This module consumes power of 7 VA and works under a defined voltage of 20-30 VAC at 50 or 60 Hz. It is resistant to temperatures ranging from -40 to 60°C, ensuring optimal performance in a variety of climatic circumstances. The DIP switch method of controller addressing (Addresses 1–253) emphasizes configurability across various platforms. This module provides a range of mounting options, including DIN rail and screw surface attachment, enabling deployment tactics to be more flexible. Even with its capabilities, it weighs only 1.8 kg and has dimensions of 279.4 × 203.2 × 101.2 mm, meaning it may be used practically in various scenarios.

AS-UNT111-1:

Inside the AS series, a digital controller module AS-UNT111-1 is designed to run HVAC systems efficiently. This unique controller is made specifically for using unit vents or fan coils in HVAC systems. Its six (6) binary outputs allow for precise control over a variety of components and devices. The N2 isolation capability of the AS-UNT111-1 is a unique feature that ensures dependable communication while protecting the controller from possible electrical disruptions. Another feature is its programmable TRIAC function, which allows the controller to manage different loads. Operating with a low-side or high-side TRIAC option, this controller effectively satisfies certain needs while adapting to different Systems. To run this module, we will require a 24V power supply, and the operating frequency would be 50-60 Hz. It has a working temperature of around 30-135 Fahrenheit. This module is UL-listed and CSA-certified; hence, it complies with safety regulations. This module has a power consumption rating of about 40 volts/ampere.

AS-VAV100-0 VAV:

Johnson Controls’ AS-VAV100-0 VAV controller is a cutting-edge electronic device designed to digitally handle various VAV box designs, such as supply/exhaust, twin duct, single duct, and fan-powered systems, precisely. Because of its adaptability, it may be used alone or seamlessly integrated into the Metasys network to provide extensive control and information sharing throughout the network. This controller allows operators to measure temperature, humidity, and other analog characteristics through its six analog and four binary inputs. The binary inputs allow for recognizing events such as motion, smoke, or similar ones. Additionally, it uses its binary outputs, which have a 24V AC rating and a 0.5 amps current capability, to choreograph control over dampers, valves, and other devices. This controller guarantees device connection by enabling communication between devices via a N2 Bus interface. The controller’s 8-pin phone connector or the zone sensor’s 6-pin phone port can help make zone bus connections. Quick-connect spade connectors make terminations easy for Input-Output terminations, and for N2 terminations, a permanent screw-terminal block is used. Its technical specifications include an 8-bit word size, an 11 mega-hertz CPU, an 8k EEPROM (2k for VAV 100/101), a 64k ROM/EPROM, and an 8k RAM capacity. Because of its many features and reliable performance, the AS-VAV100-0 VAV controller is crucial to effective environmental management and HVAC control systems.

EDA-2040-21:

The EDA-2040-21 model from the Metasys AS series is an HVAC actuator built with precision and meets several technical requirements. It works with sensor or load impedances between 0 and 5k ohms, with an AI Voltage range of 0 to 2 VDC and a DC Input Impedance of 470k ohms.  This actuator, protected by a sturdy NEMA 1 and IP20 casing, may be rotated in a range of 30 to 90° to meet particular clockwise or counterclockwise needs. Its durability is evident with an impressive 65,000 complete stroke cycles and 2,000,000 repositions rated at 35 lb·in (4 N·m). Its dependability is demonstrated by the torque standards, which guarantee reliable and constant performance at 35 lb·in (4 N·m), 35 lb·in (4 N·m) for running, and 40 lb·in (4.5 N·m) for stalling. Without the switch kit, the ATP-2040 weighs 0.77 kg, and the EDA-2040 weighs 1.5 lb (0.68 kg). The EDA-2040-102, on the other hand, emphasizes its lightweight profile for certain applications because it weighs only 0.3 lb (0.15 kg). Operating circumstances fall between 35 and 125°F (2 and 52°C) with the same humidity parameters, whereas storage conditions are restricted to -20 to 150° Fahrenheit with a maximum relative humidity of 90%.

AP-VMA1430-0:

This variable air volume modular assembly unit from Johnson Controls AP-VMA1430-0 is necessary for HVAC and BMS systems. It offers a variety of control techniques with its pressure sensor and support for proportional or floating/3-wire external actuators. With no actuator, relay, or valve needs, the AP-VMA1430-0 operates with a 3 Volts-Ampere power consumption rating. Its supply voltage is around 20-30 V, and it operates efficiently at a frequency of 50 Hz. This ensures stability in a variety of environmental circumstances. This device supports serial interfaces such as the N2 Bus and Zone Bus. DIP switches are used to configure the controller addressing settings, which span from 1 to 253. Addresses 254 and 0/255 are reserved. The AP-VMA1430-0 easily interfaces with NCM or N30 supervisory controllers over the N2 Bus to improve system connection. This controller, housed in a plastic shell with a UL94-5VB Plenum flammability certification, guarantees accurate control and dependable performance for HVAC systems in commercial and industrial environments. It is advised to put the AP-VMA1430-0 on a level vertical surface or, if that is not possible, on the side of a VAV box. It also provides an optional 24 Volt AC fuse with a 1.2 Amp current rating, meeting particular power needs while adding extra safety precautions.

AS-AHU100-0:

An essential part of the Metasys AS series, the AS-AHU100-0 module is a termination board designed especially for Air Handling Units (AHU) that makes integration and control easy. This board, which runs on a 24 VAC input voltage, provides an extensive range of 56 terminals for controlling and managing different AHU system functions. Its six analog output channels and eight analog input channels allow for accurate data collecting and signal management, guaranteeing delicate handling of variables like humidity, pressure, and temperature. It also has eight binary input channels and ten binary output channels, providing strong control over various parts and devices. Its networking and communication capabilities are increased by support for Zone Bus and N2 Bus, simplifying interactions with the wider system architecture. Adding a Common Terminal increases its adaptability to different designs and connections. It is durable in different environmental situations, guarantees constant performance even in higher temperatures, and has a working range of -20°Celsius to 70°Celsius. Its DIN rail attachment makes installation simple, makes it easier to integrate into current configurations, and increases versatility.

AS-VAV140-1:

Within Johnson Control’s Metasys AS Series, the AS-VAV140-1 Variable Air Volume Box Controller is a dependable solution for managing and controlling variable air volume applications in HVAC systems. Because of its sturdy construction, it can operate effectively in various climatic settings. For example, it performs best in temperatures between 0 and 60°C (32 and 140°F) and relative humidity levels between 10% and 90%. The AS-VAV140-1 has six analog inputs that support different RTD temperature elements, 0–10 Volts direct current transmitters, and 2K ohm setpoint potentiometers as far as inputs and outputs go. It has eight binary outputs that can handle 24 volts of alternate current TRIACS at 0.5 amperes, making up for the absence of analog outputs. This controller offers several connectivity choices via Zone Bus and incorporates an N2 Bus for isolated communication. It also provides interfaces through an 8-pin phone jack or terminal block. Numerous industrial certifications and standards are met by it, including UL 916, UL 864, NEMA ICS 2, Part 2-230, CSA C22.2 No. 205, FCC Part 15, IEEE 446, IEEE 518, and VDE 0871 Class B. When the enclosure is present, the physical dimensions of this little controller are 165 mm x 163 mm x 51 mm (6.5 in. x 6.4 in. x 2.0 in.) and 173 mm x 185 mm x 119 mm (6.8 in. x 7.3 in. x 4.7 in.). It includes one momentary push button derived from a zone sensor and four binary inputs made up of four dry contacts. It needs a power source that is 50/60 Hz, 24 volts of alternate current, and 10 VA when accounting for the binary output loads to function well. The controller weighs 0.64 kg (1.4 lbs) when it is supplied.

Concluding Thoughts:

In conclusion, the Johnson Electric Metasys AS Series is the perfect combination of cutting-edge technology and technical expertise, providing an extensive range of modules that have been painstakingly crafted to transform HVAC and automation systems. Numerous state-of-the-art features, accurate control methods, and broad networking reach come together in the AS Series modules to meet various needs related to Building Management Systems (BMS), automation, and HVAC (heating, ventilation, and air conditioning). With a wide variety of inputs and outputs, the AS-AHU-102-0 is a highly adaptable Air Handling Unit Board that easily integrates different air channels and equipment types. Its integrated control strategies include a broad range of features, from environmental condition management to room reset procedures, guaranteeing peak performance in various HVAC situations. Furthermore, the AS-CBL100-0 Cable Kit, a finely made module, highlights the series’ emphasis on robustness and connection. The Quick Connect and FMK100 cables that are included with it meet a variety of integration demands and demonstrate endurance in harsh environmental conditions, which is indicative of the series’ dedication to dependability and flexibility. The AS-UNT110-0, which provides a comprehensive range of inputs and outputs and adaptable mounting choices, is a monument to careful data collection and control. Its adaptability to a variety of operating circumstances is further highlighted by its adherence to stringent voltage standards. With its array of binary outputs and special N2 isolation capabilities, the AS-UNT111-1 is designed for unitary system administration and guarantees stable communication. An additional degree of flexibility is provided by its programmable TRIAC function, which meets the various load management requirements of HVAC systems. Furthermore, the AS-VAV100-0 VAV controller plays a crucial role in environmental management due to its wide range of connectivity choices and accurate handling of VAV box designs. Its strong technical requirements and a wide variety of inputs and outputs make it a key component of HVAC control systems.