نقد و بررسی تخصصی IS200VRTDH1DAB
The Resistance Temperature Device (RTD) processor board (VRTD) accepts 16, three-wire RTD inputs. These inputs are wired to two barrier type blocks on the RTD terminal board (TRTD). Inputs to TRTD bave noise suppression circuitry to protect against surge and high frequency noise. Cables with molded fittings connect the terminal board to the VME rack where the VRTD processor board is located.
There are two versions of TRTD, simplex and a TMR version that fans out the signals to three VRTD boards. VRTD converts the inputs to digital temperature values and transfers them over the VMEbackplane to the VCM and then to the controller.