Pickup Set Assign the pickup to pickup set1 or 2. Read the section Redundant Pickup System for general information on pickup sets.
Type You can select the type of events that will occur on this input for each pickup input. Type and number of events are defined by the discs or ring gears used. If you decide not to use a pickup input, select the entry None from the list. You can set the following types: N Disc, which causes a uniformly distributed number (N) of events (per rotation), e.g. a ring gear with 160 teeth (N=160). N+1 Disc type N with one additional event, e.g. a disc with 12 teeth and one additional tooth for the index signal (N=12). N+1 extended index range Disc type N with an additional event, e.g. with one disc with 12 teeth and one additional tooth for the index signal (N=12). The permitted range for the index signal is expanded to 75 % of the tooth period. An incorrect direction of rotation of the engine cannot be detected by this setting. N-1 Disc type N, where one event is missing, e.g. a ring gear with 160 teeth on which one tooth was removed (N=160). This missing event is used to determine the index signal N-2 Disc type N, where two consecutive events are missing, e.g. a ring gear with 60 teeth on which two teeth located next to each other were removed (N=60). This missing event is used to determine the index signal. N Magnets, Single Magnet You will always use these two types together for a disc with magnets having opposite polarity. A magnet with a fixed number of magnets (N), all of which are arranged at equal distances on the disc, has a reverse polarity. Thus, the disc supplies two signals that can be analyzed by a pickup. Single Event Disc that supplies a single event, e.g., a disc with one tooth or one magnet.
Number of Events Enter the number of events that occur on the pickup if more than one event is expected. For the types N+1 and N-1, enter the value for N and not the total number of events. With the type N Magnets, the number of magnets with identical polarity must be entered. The number of events must lie between 3 and 500. Additionally, it must be ensured that the sum of the frequencies at the pickup input does not exceed the limit of 15 kHz at the pre-set overspeed.
Speed Select whether the respective pickup will pick up the signal off the camshaft or the crankshaft.
Active/Passive Select the pickup to be used from the pre-defined pick list: Passive passive pickup Active (low) active pickup with high level as quiescent level Active (high) active pickup with low level as quiescent level
Speed [RPM] For passive pickups, the pre-trigger voltage can be set so that it is speed-dependent. See also the following example.
Pre-Trigger Enter a value between 0.1 V and 7.5 V for each pickup to set the pickup sensitivity level. Signals that fall short of the set voltage will not be analyzed. A low pre-set value therefore results in a high sensitivity level, a high value results in a low sensitivity level.
Speed-dependent pre-trigger voltage
For a passive pickup, the pre-trigger voltage is defined as follows: