The Model E-1400 monitors and processes signals from four loop / lead-in circuits, four check loop circuits, and four Vital inputs. These inputs can be programmed to control eight Vital outputs, four primary Vital outputs and four auxiliary Vital outputs. Each of the four primary Vital outputs can be controlled by any combination of the four loop inputs and/or any combination of the four Vital inputs.
In addition to the four loop inputs and four Vital inputs (as described above), the four auxiliary Vital outputs can be controlled by the four loop Health Status inputs that are continuously monitored by the processor. A loop failure will deactivate the Vital output that the loop status input and/or loop Health Status input is programmed to control.
The check loop circuits can be programmed to simulate a vehicle detection (every 1 to 255 minutes) in the loop area as a means of verifying proper loop operation. The Vital outputs and Vital inputs are monitored to ensure they are in the correct state. If the state of a Vital input is not correct, the front panel LED indicator corresponding to that input will turn red and all Vital outputs will be deactivated. If the state of any Vital output is not correct, the front panel LED corresponding to that output will turn red and all Vital outputs will be deactivated.