Applications

DO3 Output Functionality

DO3 is designed to operate in two different modes. DO3 can follow the alarm status of the controller by turning ON during alarm conditions and OFF during normal operation; or DO3 can follow the HI.LOW setpoint status of the controller by turning ON while the controller is in LOW flow operation and OFF when the controller is in HI flow operation.

Warning and Alarm Features

The Fume Hood Controller indicates fume hood performance problems at two levels, WARNING and ALARM. The two levels are available so different procedures can be instituted for each condition. Both levels are indicated locally at the ODP and, if connected to a field panel, centrally through the APOGEE alarm features.

NOTE: Central alarms only work if the field panel is specifically set up to receive and distribute the alarm information. Consult your local Siemens Building Technologies, Inc. representative for more information on central alarming.

Warning Operation

The Fume Hood Controller announces warning conditions at the ODP. The ODP indicates a warning condition by illuminating the yellow LED.

If the fume hood is operating and the exhaust volume exceeds the high or low warning limit for a period greater than the delay timer a warning condition occurs.

For more information on ODP messages, see the Fume Hood Controller Operator Display Panel User's Card (125-1976).

Alarm Operation

The Fume Hood Controller announces alarm conditions at the ODP. The ODP indicates an alarm condition in the following three ways:

•The red LED illuminates.

•The horn sounds.

•A text message indicating the specific alarm condition displays.

If the fume hood exhaust flow exceeds the high or low alarm limit for a period greater than the delay timer an alarm condition occurs. The text message FLO HI or FLO LO displays.

The fume hood operator may silence the horn for the current alarm event by pressing the Horn Silence button.

Siemens Building Technologies, Inc.

13

Page 20 Page 22
Page 21
Image 21
Siemens 125-5033 owner manual DO3 Output Functionality, Alarm Operation
Page 20 Page 22

125-5033 specifications

The Siemens 125-5033 is a highly regarded circuit breaker in the world of electrical engineering and power distribution. Known for its robust design and versatile applications, this device offers a host of features that make it suitable for both commercial and industrial use.

One of the main features of the Siemens 125-5033 is its compact size. This allows for easy integration into existing systems without occupying excessive space, making it an ideal choice for facilities with limited room for electrical infrastructure. Its ability to handle high current ratings, typically around 125 amps, ensures that it can support a variety of electrical loads, making it versatile across different applications.

The Siemens 125-5033 employs advanced technologies, such as thermal-magnetic trip mechanisms. This allows for reliable protection against overloads and short circuits. The thermal component of the trip mechanism is designed to react to sustained overcurrent conditions, while the magnetic component responds instantaneously to short circuits. This dual-functionality ensures that the circuit breaker can effectively protect both the conductors and the connected equipment.

In terms of safety, the Siemens 125-5033 comes with advanced arc suppression technologies that minimize the risk of arcing during the circuit interrupting process. This not only enhances the longevity of the breaker but also safeguards personnel working near electrical installations. Additionally, the device features a clear, accessible reset mechanism, making it user-friendly and easy to operate in case of an interruption.

Another notable characteristic of the Siemens 125-5033 is its built-in ground fault protection option. This capability provides an added layer of safety, ensuring that any ground faults are detected and addressed promptly. It is particularly useful in environments where moisture or dust can compromise electrical safety.

The Siemens 125-5033 also boasts compatibility with various monitoring and control systems, enabling seamless communication and integration into smart building management systems. This feature allows facility managers to monitor power usage, identify potential issues, and optimize energy consumption effectively.

Overall, the Siemens 125-5033 circuit breaker is a reliable, safe, and technically advanced choice for those looking to enhance their electrical systems. Its compact size, dual-trip mechanism, ground fault protection, and compatibility with modern technologies make it a valuable asset for any facility looking to improve its electrical safety and efficiency.
Top Page Image Contents