7022VBI2

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Time Delay Relays are a type of electrical switch that activates after a preset amount of time. They can be used in a range of applications, such as motor control, event triggering, recurrent timing and pulse/analog oscillation. The 7022VBI2 is a Self-Powered Programmable Time Delay Relay for HVAC Applications. The combination of features in the 7022VBI2 make it an ideal choice for multiple applications.

The 7022VBI2 Time Delay Relay has a wide variety of input (normally open or normally closed) and output (contact ratings from 12-250VAC or 12-24VDC) configurations and complete programming flexibility. The settings are programmable via a simple and intuitive 5-button keypad, and the full user display reads back the settings.  The 7022VBI2 Time Delay Relay can control up to 2 outputs in a variety of operating modes (On Delay, Off Delay, Pulse, On/Off, Single Cycle, Interval, Time Proportional, Step, Mode Control, Cascade) making it a very versatile product. Furthermore, the Time Delay Relay is compatible with industry standard 7800 series relay sockets.

The 7022VBI2 Time Delay Relay has multiple application groups including Fan, Chillers, Boiler, HVAC, Water Heater, Process Control, Lighting Control, and Motor Start/Stop. It can be used to control and protect motors, pumps, fans, compressors, boilers, system reset, etc. In fan applications, the 7022VBI2 can be used to protect against improper shutdown of fans, prevent fan motors from running dry, and reduce system power consumption by cycling off fans on demand. It can also be configured to run a fan for a predetermined amount of time following a low-level alarm condition, providing a constant output from a variable input. For cooling tower applications, the 7022VBI2 can precisely time fan run cycles, controlling a wide range of fan speeds while protecting the motor against burning out.

In HVAC applications, the 7022VBI2 can be used to time pump run cycles, disable burners following shutdown, and reduce system power consumption by cycling off pumps on demand. It can also be set to maintain the correct pressure range in the system, by programming the time delay relay to start and stop accordingly.  For water heater applications, the 7022VBI2 can be used to control and monitor the water temperature, so that only when the temperature drops below the low limit or exceeds the high limit, the time delay relay will start or stop the water heater.

In process and motor control applications, the 7022VBI2 behaves just like any other time delay relay, allowing users to set an exact period when the signal from the controller has to be switched ON or OFF. This can be used to control and protect valves, solenoids and other components in the system. In lighting control, the 7022VBI2 can be used to trigger lamps on and off in a certain sequence over a given time period, without the need of a logic-level controller.

The 7022VBI2 Time Delay Relay has a 2-setting time range from 0.1s-10h and an adjustable output delay accuracy of +/-1%. The Time Delay Relay has a frequency range from 50/60Hz and can be used for either AC or DC voltages. Its operating temperature range is between -40℉C to +70℉C, and it can be used in hazardous areas where permitted.

Overall, the 7022VBI2 Time Delay Relay is a reliable and robust product that offers flexibility for multiple applications. Its number of features make it an ideal choice for a wide range of applications including fan control, chillers, boilers, HVAC, water heater, process control, lighting control, and motor start/stop.

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