RANSBURG A11012-00 SERIAL ANALOG MODULE ASSY,LOCAL SENSING
The Serial Analog Module is a plug-in electro-pneumatic control board designed to fit standard racks. The module has two independent pressure control channels. Each channel adjusts the output pressure proportionally to the voltage input.
When one output is used to pilot a volume booster (regulator), the volume booster must have a non-bleed pilot, such as P/N: A11111.00. Use of a volume booster with a bleed pilot will cause fluctuating output pressure. When using the Serial Analog Module for a retro-fit application, refer to the last page of Operation section for details.
Pneumatic connections are made through a plugin edge connector which eliminates the need for pneumatic fittings. Electrical connections are achieved with a DIN 41612-B connector.
The Serial Analog Module is configured for output pressure bleed on power down. It has a normally closed valve on the supply and a normally open valve on the exhaust; the output will therefore vent to atmosphere on power failure or power down.
Remote pressure sensing is standard on -01 Modules. This is achieved by connecting the transducer sense pneumatic line to the input side of external devices. Pressure inaccuracies of devices such as pilot regulators are therefore compensated by means of closed-loop feedback. On both channels, pressure transducer output is pinned-out through the electrical connector. These signals may be used to drive a meter or to provide computer-control feedback. In addition, there is a digital output for each channel; the logic level is low when the pressure controller is in a stable state.
On the front panel, LED’s indicate when each channel is stable. Front panel potentiometers provide manual control of pressure output. A status signal is provided giving a logic low output when the panel controls are activated. This can alert the controller when the module is in the local/ manual mode.
