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Siemens tec laboratory room controller - 546-00362
See product Overview and Product Description for more details about Siemens Laboratory Room Controller. If you need more information send us an specific email to ****@prcontrols.com
The Laboratory Room Controller-Electronic Actuation consists of the Laboratory Control Module, two autozero modules for airflow measurement accuracy and an enclosure. All assemblies are pre-mounted and preterminated within the enclosure at the factory. External connections for flow sensors are located on the side of the enclosure. The LRC can be factory mounted to the Laboratory Room Supply Terminal or field mounted within the lab room.
The control algorithm is pre-programmed and controllers are ready to operate after selecting the application and assigning the controller s address using the Portable Operator s Terminal. If desired, the operator may use the Portable Operator s Terminal to adjust the air velocity set points in CFM, differential flow, room temperature set point and other set points.
The Laboratory Controller Module includes a microprocessor-based assembly with on-board differential pressure transducers for airflow measurement. Wiring termination for input and output points, FLN communications, and power are provided via removable terminal block connections. The room temperature sensor is connected to an on board RJ-11 jack.
The controller connects to the following external devices:
* Lab Electronic Damper Actuator Assemblies
* Electronic Hot Water Valve
* Portable Operators Terminal
* APOGEE Automation System
* Digital Input Devices (e.g., wall switches)
* Digital Output Devices (e.g., alarm horn)
* Laboratory Room Air Terminals boxes
The APOGEE Automation System Laboratory Room Controller (LRC) provides Direct Digital Control (DDC) for laboratory space pressurization and temperature control. The controller maintains the user defined differential airflow between the room air supply and Fume Hood Controller exhaust and general exhaust terminals by measuring the airflow and controlling the damper position of the supply and general exhaust terminals. Temperature control is provided by measuring the room temperature and controlling the position of the reheat valve and adjusting the airflow. The LRC operates as an independent, stand-alone DDC controller and can be connected on the Floor Level Network (FLN) with the APOGEE Automation System. This extends the benefits of DDC to all of the building s HVAC equipment. This approach to lab room control includes the following features.
* Closed loop PID control of HVAC systems to maintain tighter air volume and temperature control
* Control sequences for both single duct and dual duct supply system applications
* Supports the use of wall switch input to change from occupied to unoccupied mode for increased energy savings
* Optional room pressurization alarm output to notify laboratory occupants.
* Reports airflow directly in actual cfm (lps)
* On-line, convenient HVAC diagnostics through communication with a Portable Operator s Terminal at the room sensor or any field panel
* Set points and control parameters easily assigned and changed using the Portable Operator s Terminal
* Electrically Erasable Programmable Read Only Memory (EEPROM) used for storing set points and control parameters no battery backup or reentry of data required
* Quick return from power failure without operator intervention
* Maintains room pressurization during transient conditions, i.e., rapid hood sash movement
* Two controller options, both use the same air flow measurement technology while offering options for control of end devices
* Electronic Output for control of 0-10V hot water valves and the Laboratory Electronic Damper Actuators
