T2B EtherCAT® and RS485 Exhaust Throttle Valves are specifically designed for applications where a simple, yet advanced, pressure control system is desired. The T2B integrates all control, communication, and driver circuits within a throttle valve assembly, eliminating the need for mounting a separate pressure control electronics module. The unique model-based control algorithm and high-speed operation drives the system to set point quickly with minimum overshoot, and ensures repeatable process recipes without operator involvement.
T2B Downstream Pressure Controllers are available with the following options.
|Configuration Option||Option Code|
T2B Downstream Pressure Controller
|Valve Bore/Flange Size|
|1 in./NW40 ISO-KF||01K|
|2 in./NW50 ISO-KF||02K|
|Direct Drive, NEMA 23-2, 8 in-lb||2|
|Direct Drive, NEMA 24-2, 25 in-lb||4|
|Geared Drive, NEMA 17-1 20:1, 40 in-lb||3|
|Nominal Radial Gap (NRG), Flapper/Body|
|0.002 in. (std for 1”, 2”, 60mm)||020|
|0.003 in. (std for 3", 4")||030|
|Up to 150°C, with fan||1|
|Up to 150°C||2|
|Up to 105°C, without fan||3|
|Seal Materials (Valve Shaft)|
|EtherCAT, no analog w/LCD||4|
|RS485,analog pressure input, w/LCD||5|
|Pressure Sensor Power|
|±15 VDC @ 650 mA total (available RS485 only)||1|
|MKS will ship the current firmware revision||VV|
The T2B utilizes a direct drive high-speed stepper motor. The valve driver provides high resolution pressure control. The optional, high torque direct drive motor provides extended uptime and reduces preventative maintenance cycles — a great advantage in demanding processes where just one hour of downtime can cost thousands of dollars. The T2B is also available in geared versions, providing maximum torque and enabling long-term operation in harsh environments.
T2B Exhaust Throttle Valves can operate in two modes: flapper positioning or pressure control, either of which can be user-activated through the I/O interface. All of the adjustable setup parameters, run time operation, and diagnostics information is available through the communications interface. EtherCAT T2B is only compatible with EtherCAT manometers.
The downstream pressure control technique provides wide dynamic range, works with all types of pumps, provides fast response, and is tolerant to most effluent gases. The "intelligent instrument" concept results in valuable system space savings, improved noise immunity, and easy access to time-critical process and calibration information as well as on-board diagnostic functions.