air-cooled brakes

Click on the component name for more information. Scroll down for optional accessories.

Open-loop Systems

A characteristic of the open-loop system is that it does not use feedback to determine if its input has achieved the desired goal. This means that the system does not react to the output of the processes that it is controlling. An open-loop controller is often used in simple test setups because of its simplicity and low cost, especially in systems where feedback is not critical. Below is an example of an open-loop system.

Closed-loop Systems

A characteristic of the closed-loop system is that it uses feedback to determine if its input has achieved the desired goal. This means that the system reacts to the output of the processes that it is controlling.
A closed-loop controller is often used because of its ability to repeatedly return to a desired controlled point. Below is an example of a closed-loop system.

Optional Accessories

	TM Risers Many times, the AHB Brake will be used with one of Magtrol’s TM Series In-Line Torque Transducers. Risers lift the appropriate TM from the PT to the shaft height of the brake. The riser is complete with attachment hardware for the TM and T-Nuts and bolts for attachment to the PT 25 Base Plate. • Detailed dimension drawings
	Jack Shafts For each brake there is an appropriately sized hardened jack shaft, complete with T-Nuts and shoulder bolts, that will mount to PT 25 Base Plate.
	Air Filter Kit In order to ensure optimal life, the compressed air supply used to cool AHB Series Hysteresis Brakes must be free of contamination, including water, oil, rust scale, dust, etc. For optimal performance, Magtrol recommends the use of a 5 micron coalescing filter. Air filter kits purchased from Magtrol include the filter and a mounting bracket for attaching the air filter to the PT Base Plate.
	Pressure Gauge Kit To ensure proper air volume Magtrol offers a pressure gauge kit, including “T” connector and tube (as shown), to be used in-line with the air supply line.
Power Supplies AHB Series Compressed-air-cooled Hysteresis Brakes provide torque that is proportional to the current applied. During normal operation, the coil resistance of an AHB Brake will change with temperature. To eliminate the resulting torque drift, Magtrol recommends using a current-regulated power supply, such as the Model 5210 or the Lambda ZUP36-6. Refer to the note about power supplies under “Accessory Ordering Information” in the data sheet for more details.
Also Available:	• Connection Cables: brake to controller; power supply to brake; controller to power supply • Couplings: brake to in-line torque transducer • Air Supply Lines: 8 mm and 10 mm outside diameter; sold by the meter • Pipe Fittings