Johnson Controls Applications Engineer Interview Questions and Answers

The number of systems that can be connected in a BACnet MSTP protocol network depends on factors like network speed, device types, and network topology.

• The maximum number of devices that can be connected in a BACnet MSTP network is typically limited to 127 devices.

• The actual number of systems that can be connected may vary based on the network speed and the types of devices being used.

• Factors like network topology, cable length, and device addressing also play a role in deter...read more

The question covers various aspects of HVAC systems and BMS standards.

• IO summary refers to the input/output points of a system.

• Water meter and flow meter are used to measure the flow rate and volume of water in a system.

• Sequence of operation for CPM and AHU refers to the order in which the equipment operates.

• HVAC equipment includes chillers, boilers, air handlers, etc.

• BMS standards include protocols like BACnet, Modbus, LonWorks, etc.

BMS stands for Building Management System. It is a computer-based control system that manages and monitors a building's mechanical and electrical equipment.

• BMS controls and monitors HVAC systems, lighting, security, fire alarms, and other building systems.

• It typically consists of sensors, controllers, communication networks, and user interfaces.

• Examples of BMS vendors include Siemens, Honeywell, and Johnson Controls.

Chillers are refrigeration systems that remove heat from a liquid via a vapor-compression or absorption cycle.

• Chillers are commonly used in industrial settings to cool equipment, machinery, and processes.

• They are also used in commercial buildings to cool air and maintain comfortable temperatures.

• Chillers can be found in data centers to prevent overheating of servers and other electronic equipment.

• In the food and beverage industry, chillers are used to cool products during pro...read more

CCTV and ACS are security systems used for surveillance and access control. They come in various models and makes.

• CCTV stands for Closed Circuit Television and is used for video surveillance

• ACS stands for Access Control System and is used for controlling access to a building or area

• Both systems come in various models and makes from different manufacturers

• Examples of CCTV models include dome cameras, bullet cameras, and PTZ cameras

• Examples of ACS models include card readers, b...read more

HVAC and BMS are essential for controlling heating, ventilation, and air conditioning systems in buildings.

• HVAC stands for heating, ventilation, and air conditioning, and is responsible for controlling the temperature, humidity, and air quality in a building.

• BMS stands for Building Management System, which is a computer-based control system that manages and monitors the building's mechanical and electrical equipment.

• Integration of HVAC and BMS allows for centralized control a...read more