GE-Emerson IC660BBA023 Genius Thermocouple I/O Block

The GE-Emerson (GE-Fanuc) IC660BBA023 Genius Thermocouple I/O Block allows a maximum of +/-10V common mode voltage between 2 points in a group. Each group has two thermocouple input circuits and two remote cold junction compensation inputs. Group to group isolation is 300V. 

Each input can interface to type J, K, T, E, B, R, S, and N (#14 AWG Nicrosil vs. Nisil) thermocouples. The block provides cold junction compensation for all thermocouple input measurements.

Each channel can be configured to use an internal sensor, an external sensor, or a user-defined value ( in the range of +/327.67mV) for cold-junction compensation.  An external signal from a remote junction can be either a voltage (XJV) or a current (XJI) analog of temperature. The XJV input is scaled for 1.0mV per degree Centigrade and the XJI input is scaled for 1.0uA per degree Kelvin.  After compensation, the block linearizes each thermocouple input measurement according to the NBS monograph for the thermocouple type in use.

Each input measurement can be adjusted up to +/-100.0 degrees C or +/-100.0°F for greatest accuracy. An output is provided to drive a Bus Switching Module (version IC66*BSM021 only).

Thermocouple blocks perform the following diagnostics:

• Internal fault detection
• Open Wire detection
• Overrange and underrange input indication
• High and low input alarms