70RCK8 Grayhill 8 Channel Input/Output Rack

The Grayhill 70 Series System 50 Multi Channel Input/Output Racks are passive backplanes into which I/O modules can be installed and removed. I/O racks connect one of the "logic side" terminals from each module to an associated pin on the logic side connector for interface to the controller. I/O bases have an integral processor and dual port memory chip. The I/O handles scanning and storage of the I/O information which can be accessed over the bases address/databus. Up to 8 racks can be stacked along a DIN rail.

The mounting racks provide a convenient method of connecting to I/O modules. Most racks have the option of a card edge or header connector for the logic signals. Field wires are connected to open or closed terminal blocks.

G5 mounting racks are designed to accommodate G5 modules, which incorporate a status LED in the module. The G5 output modules also have an integral fuse. This eliminates the need for module fuses and LED status indicators on the rack. The G5 modules are slightly thinner than the standard modules. When used with the MicroDAC or Microlon controllers, analog and digital I/O modules can be intermixed on the same G5 rack.

The mini racks are much smaller than the industry standard racks. In addition to saving precious panel space, mini racks save installation time by replacing the individual module screws with a single hold down bar which is installed with two thumb screws.