LINE AS-FUEL INJECTION 1852831 - Caterpillar

OP6 is the option for the programming of the following parameters: Spare Inputs, Spare Indicators, Spare Outputs and Programmable Spare Relay Outputs. These spare inputs and outputs are provided in order to satisfy the needs of the customer.MUI Engines
Spare Inputs
The spare inputs are referred to as SP1, SP2, SP3, and SP4. The spare inputs are accessed on the terminal strip within the control panel on the rear wall. The terminations at the terminal strip for the spare inputs are listed below.
SP1
SP2
SP3
SP4The active input state, response taken and time delay for each spare input is programmable. The GSC+ responds to the active state of an input and the response can be delayed. Setpoints SP01 through SP12 are used for the programming of the spare inputs. Table 1 describes each of the setpoints.
Illustration 1 g00525961
Typical Active High Input Configuration For Spare Input 1 (SP1)
Illustration 2 g00525969
Typical Active Low Input Configuration For Spare Input 1 (SP1)The GSC+ must be programmed as to whether the active input state is high (+5 DCV to "B+") or low ("B-"). When an input is programmed for a HIGH active input state, a high at the input is considered a spare fault and a low at the input is considered a normal condition. When an input is programmed for a LOW active input state, a low at the input is considered a spare fault and a high at the input is considered a normal condition.Setpoints SP01, SP04, SP07 and SP10 are used for programming the active input state of the spare inputs. Table 1 describes each of the setpoints.Note: If an input is left floating, the internal circuitry of the GSC+ pulls the input high and the GSC+ responds accordingly. An example of a floating input is an open switch.The GSC+ must be programmed for a response to an active spare fault. The GSC+ responds by treating the condition as either a fault shutdown or a fault alarm. Setpoints SP02, SP05, SP08 and SP11 are used for the programming of the response. Table 1 describes each of the setpoints.Note: Spare faults that are programmed to shutdown are ignored by the GSC+ when engine speed is less than crank termination speed.The GSC+ must be programmed for the amount of time to delay the response to a spare fault (active input). After a spare fault occurs, the GSC+ does not respond until the time delay has elapsed. Indicators are not activated and codes are not shown. Engine operation does not change. Setpoints SP03, SP06, SP09 and SP12 are used for the programming of the time delay. The time delay is selectable from 0 to 250 seconds. Table 1 describes the setpoints.Alarm Mode Sequence Of Operation - When a fault occurs in a spare input (input active) and the fault is programmed as an alarm fault, then the GSC+ will respond in the following manner:
The GSC+ waits for the time delay.
The fault alarm indicator FLASHES.
The corresponding code SP1, SP2, SP3 or SP4 is shown on the upper display of the GSC+