The IQAN receives electrical signals from the sensors, the switches, and the accelerator pedal. The IQAN processes the electrical input signals. The IQAN then outputs signals to the solenoids and the warning system.
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| Illustration 1 | g00680157 |
Location of IQAN-MG and IQAN-XP | |
The IQAN modules (IQAN-MG and IQAN-XP) are located under the switch panel on the right side of the cab.
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| Illustration 2 | g00680170 |
Location of IQAN module (IQAN-XS) | |
The IQAN module (IQAN-XS) is located behind the operator seat in the cab.
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| Illustration 3 | g00680173 |
Location of IQANtalk Connection | |
The IQANtalk connection is a nine pin connector that is located on the side of the switch panel on the right side of the cab.
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| Illustration 4 | g00680179 |
Location of IQAN module (IQAN-DG) | |
The IQAN module (IQAN-DG) is located on the right switch panel in the cab.
The IQAN-DG allows individual functions of the machine to be monitored and adjusted.
The IQAN control system consists of the following components: operator controls in the cab, monitor, IQAN controller, travel control pedals and the proportional controls on the implement and the pendulum arm control valves. The IQAN receives electrical signals from the sensors and the switches. The IQAN processes the electrical input signals. The IQAN then outputs the signals to the solenoids and the warning system.
IQANtalk is the interface between the IQAN and the user. IQANtalk is intended for controlling, supervising, and troubleshooting the IQAN system. The IQANtalk software allows you to measure the electrical input signals and the electrical output signals of the IQAN.
The IQANtalk software allows you to download the machine settings that are specific to the machine. The IQANtalk also allows you to load new software to the IQAN. This software contains the parameters of the machine systems.
The IQANtalk software also allows you to download settings from the IQAN for troubleshooting. IQANtalk allows you to monitor multiple functions simultaneously.
The IQAN allows the operator to obtain different machine information. The monitor is also used for calibration, testing and troubleshooting.
The settings for the IQAN are stored in memory. The IQAN controls the hydraulic functions of the implement control valve, the pendulum arm control valve and the travel functions of the machine. The parameters for the warning system are also controlled by the IQAN. If any of the pressure sensors or temperature sending units detect a reading which is out of the machine specifications, the IQAN activates the warning light and the fault is displayed on the monitor panel.
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| Illustration 5 | g00683026 |
Diagram of the Monitoring and Control System (1) Warning alarm (2) Warning lamp (3) Engine governor position sensor (4) Differential lock solenoid (5) High speed solenoid (6) Forward solenoid (front axle) (7) Reverse solenoid (front axle) (8) Forward solenoid (rear axle) (9) Reverse solenoid (rear axle) (10) Parking brake solenoid (front) (11) Parking brake solenoid (rear) (12) Neutralizer solenoid (front axle) (13) All wheel drive solenoid (14) IQANtalk connection (15) Minimum engine speed potentiometer (16) Maximum machine speed potentiometer (17) Accelerator pedal (18) Reverse pedal (19) Traction control potentiometer (20) Oil temperature sensor (power train) (21) Hydraulic tank oil level switch (22) Charge pressure sensor (power train) (23) Pressure sensor (front axle) (forward direction) (24) Pressure sensor (front axle) (reverse direction) (25) Pressure sensor (rear axle) (forward direction) (26) Pressure sensor (rear axle) (reverse direction) (27) Traction control switch (28) Door switch (29) Differential lock switch (30) Operating mode switch (31) Speed selector switch (32) Differential lock switch (33) Machine shutdown switch | |
A computer with IQANtalk software can be used to communicate with the IQAN. The IQANtalk software allows you to measure the electrical input signals and the electrical output signals of the IQAN.
The IQANtalk software allows you to download settings to the IQAN. The IQANtalk software also allows you to download settings from the IQAN for troubleshooting.
The IQANtalk connection is a nine pin connector. This connector is located behind the seat on the right control panel.
The software can be used to change the following parameters for the power train.
- Current to solenoids (6), (7), (8) and (9)
Oil flow from the power train components is controlled by the IQAN. The IQAN receives electrical signals from the sensors and the switches. The IQAN processes these signals. Then, the IQAN outputs signals to the solenoids.
On/Off Switches
Whenever the operator presses a switch, a constant current flows to one of the IQAN modules.
Accelerator pedal (17), reverse pedal (18), traction control potentiometer (19), traction control switch (27), and door switch (28) control the flow of electricity to proportional solenoids (6), (7), (8) and (9). The machine will not move in any direction when the door is open.
Differential lock switch (29) and (32) controls the flow of electricity to differential lock solenoid (4). Differential lock solenoid (4) is an on/off solenoid that controls the engagement of the differential lock in the front axle and the rear axle.
Operating mode switch (30) controls the engine idle speed. The engine idle is preset for the work mode and the road mode. The engine idle speed is set higher for the work mode.
Speed selector switch (31) controls the flow of electricity to neutralizer solenoid (12) and all wheel drive solenoid (13). Solenoids (12) and (13) are on/off solenoids. Neutralizer solenoid (12) controls the flow of charge pump oil to the front travel motor. When charge pump oil is introduced to the front travel motors, the front travel motors are allowed to freewheel. All wheel drive solenoid (13) controls the oil flow from the front power train pump to the front travel motors. When all wheel drive solenoid (13) is activated, oil flow from the front power train pump is blocked from flowing to the front travel motors.
When machine shutdown switch (33) is activated electricity is cut off and the engine is shut off.
Accelerator Pedal
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| Illustration 6 | g00673575 |
Current from Accelerator Pedal (A) Maximum current. (B) Minimum current. (C) Incorrect current adjustment. (D) Pedal at START position. (E) Pedal at end of travel. | |
Accelerator pedal (17) allows the power train pump to be controlled proportionally.
When you first move the accelerator pedal from the START position, no current flows from the pedal. If you move the pedal slightly more the minimum current (B) will flow from the pedal.
The minimum current should be adjusted so that the machine does not move during the initial output from the accelerator pedal. When the accelerator pedal is pushed slightly more the machine should begin to move.
If the minimum current is too high, the machine will jump when you move the accelerator pedal. If the minimum current is too low the accelerator pedal must be moved excessively in order to begin the movement of the machine.
When the accelerator pedal reaches the end of travel, the maximum current will flow from the accelerator pedal. The maximum current should be adjusted so that the maximum speed of the machine corresponds to maximum travel of the accelerator pedal.
If the maximum current is set too high, the accelerator pedal will not move all the way to reach maximum speed. If the maximum current is set too low, the machine will not move at maximum speed.
In Illustration 6, line (C) shows the minimum current and the maximum current set too high. This causes the function to jump when you move the accelerator pedal. This also causes the function to reach maximum speed before the accelerator pedal reaches the end of travel.
Proportional Solenoids
Direction selection is made by using accelerator pedal (17) and reverse pedal (18). These pedals activate proportional solenoids (6), (7), (8) or (9) on the power train pumps.
Proportional solenoids (6), (7), (8) and (9) control the servo pressure to the swashplate of the power train pump. More current to the proportional solenoid results in a greater swashplate angle. This causes more oil flow from the power train pump.
Monitoring System
The IQAN warns the operator of problems in the power train system. The IQAN uses the switches and the sensors in the power train system to detect problems. If a problem is detected, warning alarm (1) and warning lamp (2) alerts the operator. The display panel will also display the nature of the alarm.