direct digital controls
... BENEFITS OF FACTORY-SUPPLIED DDC HARDWARE • In-Stock digital controls and wall sensors for all VAV air terminals – no more delays due to consignment controls that arrive late or never • Eliminates coordination delays and integration “finger ...
... BENEFITS OF FACTORY-SUPPLIED DDC HARDWARE • In-Stock digital controls and wall sensors for all VAV air terminals – no more delays due to consignment controls that arrive late or never • Eliminates coordination delays and integration “finger ...
RF1 User Manual - HDR Power Systems
... The overcurrent trip adjustment is on the front of the unit. It's adjustment range is from 25 to 200% of the current transformer’s current rating. It trips based upon peak current not RMS current as many others do. If adjustment is necessary, have the command signal set at maximum and adjust the ove ...
... The overcurrent trip adjustment is on the front of the unit. It's adjustment range is from 25 to 200% of the current transformer’s current rating. It trips based upon peak current not RMS current as many others do. If adjustment is necessary, have the command signal set at maximum and adjust the ove ...
Section 26 09 00 Instrumentation and Control for
... SageGlass® controllers will be configured to automatically maintain daylight at a target brightness range by monitoring a Daylight Sensor. ...
... SageGlass® controllers will be configured to automatically maintain daylight at a target brightness range by monitoring a Daylight Sensor. ...
Lab 2 Document (Word format)
... inverting input. Test the controller by changing the setpoint and measuring the Vsp, Ve, Vc, Vd, and Vo for each value of the setpoint. The output should track the feedback signal, Vd, with a difference between the two values. With K p = 1 record the voltage values in Table 1 and save the data for t ...
... inverting input. Test the controller by changing the setpoint and measuring the Vsp, Ve, Vc, Vd, and Vo for each value of the setpoint. The output should track the feedback signal, Vd, with a difference between the two values. With K p = 1 record the voltage values in Table 1 and save the data for t ...
Direct Torque and Flux Control.pdf
... flux or torque deviates from the reference more than allowed tolerance, the transistors of the variable frequency drive are turned off and on in such a way that the flux and torque will return in their tolerance bands as fast as possible. Thus direct torque control is one form of the hysteresis or b ...
... flux or torque deviates from the reference more than allowed tolerance, the transistors of the variable frequency drive are turned off and on in such a way that the flux and torque will return in their tolerance bands as fast as possible. Thus direct torque control is one form of the hysteresis or b ...
PWM-C Pulse Width Modulation to Current Transducers
... pulse inputs may be created by mechanical dry contacts, solid state open collector transistors (NPN) or triacs as shown in the wiring diagram. If the input is from a Unitary Controller Triac (Triac to ground), remove resistor R10 and diode D2 as shown on diagram.If the input is from a Universal Micr ...
... pulse inputs may be created by mechanical dry contacts, solid state open collector transistors (NPN) or triacs as shown in the wiring diagram. If the input is from a Unitary Controller Triac (Triac to ground), remove resistor R10 and diode D2 as shown on diagram.If the input is from a Universal Micr ...
CMS EMU CSC policy on Grounding, Shielding and Power
... This structure avoids the ground loop to the maximum extent possible, since the input impedance of the differential receiver inputs is very high. The individual shield cannot be grounded on both sides because this immediately leads to a ground loop. If the shield is grounded on the receiver side (an ...
... This structure avoids the ground loop to the maximum extent possible, since the input impedance of the differential receiver inputs is very high. The individual shield cannot be grounded on both sides because this immediately leads to a ground loop. If the shield is grounded on the receiver side (an ...
An Introduction to Digital Control of Switching Power Converters
... present error value to its state from the last sample. An integral term in the equation will drive “error” to zero resulting in centering of the output voltage inside whichever A/D bucket corresponds to the desired set point. A Derivative Coefficient, Kd, compensates for time delays accumulated arou ...
... present error value to its state from the last sample. An integral term in the equation will drive “error” to zero resulting in centering of the output voltage inside whichever A/D bucket corresponds to the desired set point. A Derivative Coefficient, Kd, compensates for time delays accumulated arou ...
Distributed control system
A distributed control system (DCS) is a control system for a process or plant, wherein control elements are distributed throughout the system. This is in contrast to non-distributed systems, which use a single controller at a central location. In a DCS, a hierarchy of controllers is connected by communications networks for command and monitoring.Example scenarios where a DCS might be used include: Chemical plants Petrochemical (oil) and refineries Boiler controls and power plant systems Nuclear power plants Environmental control systems Water management systems Metallurgical process plants Pharmaceutical manufacturing Sugar refining plants Dry cargo and bulk oil carrier ships Formation control of multi-agent systems