CONTROL FUNCTIONS (CONT’D) Application Interface Outline (Cont’d) Engine cutoff Besides the engine stop caused by overload and out of fuel, the factor for stopping the engine is as follows. The engine stop factor is checked by connecting the engine diagnosis tool to see the stop factor flag [See "Logging function" on page 10-40-56]. •
Method by key switch When the key switch is turned off and the rack actuator is shut off, the engine is cut off (no stop solenoid is required).
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Method by SHUDNSW terminal The engine can also be cut off by turning on terminal SHUDNSW to which an engine stop switch has been connected. The engine stop switch is available in two types: NC (normally closed) and NO (normally open standard). The connection method of the engine stop switch is shown in [Figure 10-40-40]. By default, NO type switch is set, so if the switch is not connected, it’s possible for the engine to run. Once the engine stop switch is turned on, the engine stop condition is held; it’s required to turn off the switch in order to re-start.While the engine stop switch is turned on, it cannot be started with the starter. The operation by the SHUDNS terminal during the engine stop is summarized in the table at the bottem of this page. By setting the NC type for the engine stop switch, this feature is suitable for the utilization as a connection port for immobilizer key; it has high protection to stop the engine drive for disconnection and short of the switch harness, as shown in [Figure 10-40-41].
Note:
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Be noted that when the NC type is set for the engine stop switch, the engine cannot run with the switch circuit unconnected.
Method by APP-IP7 terminal By connecting the APP-IP7 terminal to the engine stop 2 switch, the engine can be stopped when the terminal input is turned on.The engine stop switch is available in two types: NC (normally closed) and NO (normally open standard). The connection method of the engine stop switch is shown in [Figure 10-40-41].By default, NO type switch is set, so if the switch is not connected, it’s possible for the engine to run. Once the engine stop switch is turned on, the engine stop condition is held; it’s required to turn off the switch in order to re-start.While the engine stop switch is turned on, it cannot be started with the starter. Such an engine stop switch can be utilized as a safety switch that stops the engine when the engine cover is opened, for example. The input signal to the engine stop2 switch can also be given through CAN communication instead of from terminal APP-IP7. The operation by the APP-IP7 terminal during the engine stop is summarized in the table at the bottom of this page.
Terminal SHUDNSW APP-IP7
switch [Circuit] Momentary High side OK Low side OK
CAN input stop NG OK
Engine stop conditions Rack actuator relay Rack Starter OFF Halt Disabled OFF Halt Disabled
10-40-37 85 of 182
Recovery Key off Key off
E55W, E60, E80 Electronic Control System Manual
