Basler Electric BE1-11g - Manual (Page 47)

9424200994 Rev N 35
3. Locate the two jumper terminal blocks that are mounted on the Digital Circuit Board. The Digital
Circuit Board is the middle board in the assembly and the jumper terminal blocks are located on
the component side of the circuit board. Each terminal block has two sets pins. With the jumper
as installed at the factory, one pin should be visible when viewed from the side of the unit. This
configuration allows the inputs to operate at the higher end of the control voltage range. Figure 28
illustrates the location of the contact-sensing jumpers. The jumpers are shown in the HIGH
position.
4. To select operation at the lower end of the control voltage range, install the jumper across the two
pins. Use care when removing and installing each jumper so that no components are damaged.
5. When all jumpers are positioned for operation in the desired control voltage range, prepare to
place the drawout assembly back into the case.
6. Align the drawout assembly with the case guides and slide the assembly into the case.
7. Tighten the screws.
Figure 28. Contact-Sensing Jumper Locations (H or P Type Case)
Digital Input Conditioning Function
Status of the contact-sensing inputs is checked every 1 millisecond. User-settable digital contact
recognition and debounce timers condition the signals applied to the inputs. These parameters can be
adjusted to obtain the optimum compromise between speed and security for a specific application. (See
Figure 29.)
If the sampled status of a monitored contact is detected as energized for the recognition time, the logic
variable changes from a de-energized (logic 0 or false) state to an energized (logic 1 or true) state. Once
contact closure is recognized, the logic variable remains in the energized state until the sampled status of
the monitored contact is detected to be de-energized for a period that is longer than the debounce time.
At this point, the logic variable will change from an energized (logic 1 or true) state to a de-energized
(logic 0 or false) state.
BE1-11g Contact Inputs and Outputs