The APC200 has special circuitry to help verifying its operation. Six self-test groups are built into the APC200 control programs:
• Display test and Version • Digital input test
• Analogue input test • Speed sensor test • Output test • Voltage test
The 'D' led is on while operating the APC200 in diagnostic mode.
Note:
• If during operation in a self-test mode a fault is detected, the E-led flashes to indicate the presence of the fault. Pressing S-button for a while however in this case will not reveal the reveals the fault code.
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 46/655.1.2.1 Self test Operation
Self-test mode is activated by pressing the ‘S’-switch on the APC200 front panel while powering up the APC200.
Switching off the power of the APC200 is the only way to leave the self-test mode.
The available information is organised as groups of related displays.
Generally, each mode’s start display provides an overview of the status of all members of the group.
For instance, the start display of the input test mode cryptically shows the level of each input and the speed sensor test mode shows the frequency of each sensor channel in kHz.
Pushing the ‘M’-switch selects the next group in the order listed.
By pushing the ‘S’-switch a list of modes with more detailed information about the selected group can be looked through.
When a new group is selected with the ‘M’-switch, the display always reverts to the overview display (i.e. the beginning of the mode-list).
Pressing a switch (M or S) shortly reselects the current group or mode. This feature is applicable in all diagnostic-groups.
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 47/655.1.2.2 Overview of test modes
8.8.8.8 i.02b Ver
S
DISp M dinp M ainp M spd M out p M vol t
M I II hi 0.i2 S hi i.i3 S l o 2.i4 S S l o I2.29 S l o i3.47 S 0. I.2. I 0853 0. i i S i0ib I.28 S 2720 2.29 S I 020 3.47 S 2.0.0. i c 2.24 0.22 S i . i33 i.24 S C .846 2.26 S i I.54 3.4 i S 26.3 25.8 vs S 8.2 vsen S ... S S I I 0833 0.02 S 0010 i.04 S 0501 2.06 S S l o 9.i6 S LO i0.20 S ... vp S S S S Power up + S POSSIBLE RESULTS: l o hi 1234 (Ohm) open 1234 (Hz) open shr t 1234 (mA) l o hi open shr t 24.3 (V) Logic I/O number Wire number
5.1.2.3 Display test and Version
When selecting this group the display shows:
When pressing the S-switch, the display changes in
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 48/65When pushing the S-switch, the display switches back to the display test mode, showing:
Followed by the program identication string:
ECM 4501675 V1.10A
After releasing the S-button, the display again lightens up all segments.5.1.2.4 Digital input test
When selecting this group the display shows:
The display shows which inputs are active. Each segment of the display indicates a specific logical input. Different segments can be switched on simultaneously if different inputs are activated simultaneously. In total there are fourteen inputs: ten digital and four analogue inputs (in this group treated as if they were digital pull to ground inputs).
Digital inputs numbered 0 – 9 are shown on the segments as shown below. Analogue inputs 0 –3 are shown on segments numbered 10 – 13 below.
Below example indicates that input 1, 4 and 5 are on. All others are off.
By pressing the ‘S’- switch repeatedly, each individual input is shown in more detail.
While pressing the ‘S’- switch, the display shows the logic-input number with the matching harness wire. – I.e. below display corresponds with input one connected to wire A12.
Releasing the switch displays the input’s state (hi or lo).
Note: the analogue inputs return ‘high’ when pulled to ground.
Pressing the S-switch at the last analogue input brings back the overview on the display.
0 2 4 6 8 10 12 1 3 5 7 9 11 13
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 49/655.1.2.5 Analogue input Test
The APC200 has 4 analogue resistance inputs. They measure the single-ended resistance of a sensor connected between the input and signal ground B18.
When selecting this group the display shows:
Releasing the switch brings an overview of the 4 analogue inputs on the display. The values, displayed in kΩ, are separated by a dot.
Above display corresponds with a first input of 1 kΩ, a second of 2 kΩ and the last two of 0 kΩ. Values that are more accurate can be found while running through the input specific displays (S- switch).
While pressing the switch, similar to the display of digital inputs, the left side of the display gives information about which input is tested; the right side gives the matching wire.
The displayed value when the S-switch is released is the resistance in Ω.
Note: Although the APC200 also has 4 current sense and 3 voltage sense inputs, these are not directly accessible through diagnostic displays.
The current sense inputs are treated in combination with analogue output test modes The voltage sense inputs are not yet supported by the diagnostics modes
5.1.2.6 Speed sensor test
When selecting this mode the display shows:
When releasing the ‘M’-switch, again an overview appears on the display.
The four values, displayed in thousands of Hertz, are separated by a dot. Speeds below 1000 Hz are shown as 0.
Using the ‘S’-switch more detailed information concerning the speeds is available.
While pressing the ‘S’-switch, the display shows the speed channel number on the left side of the display while the matching wire is shown right.
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 50/65Once released, the left digit indicates what type of speed sensor should be connected to this channel:
• c for a current sensor (Magneto Resistive Sensor) • i for an inductive speed sensor.
The three other digits and the dot represent the matching speed in kHz
For instance, in below examples the left display indicates a current speed sensor and a frequency of 933 Hz. The right one indicates an inductive sensor generating about 1330 Hz.
After the last channel is shown, another press on the ‘S’ switch re-selects the speed sensor overview.
5.1.2.7 Output test
When selecting this mode the display shows:
The display shows which outputs are active. Similar to the digital input test overview screen, each segment of the display indicates a specific input.
Different segments can be switched on simultaneously if different outputs are activated simultaneously.
A blinking segment indicates a fault at a certain output. In total, there are 11 outputs:
• Outputs 0 – 6 are analogue
• Outputs 7 – 9 are STP digital outputs • Output 10 is a STG digital output
Information that is more specific can be found while running through the different modes (S-switch). While pressing the switch, the left side of the display gives information about which output channel is tested; the right side gives the matching wire number.
When releasing the switch the display shows either the actual current in mA, or the logic state of the output (either ‘hi’ or 'lo').
0 2 4 6 8 10 12 1 3 5 7 9 11 13
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APC200 Control System
Description for ECM / ECI
Ten Briele 3, 8200 Brugge, Belgium Controls 08 march 2002 Tel: +32/50/402459 [email protected] Doc P/N : 4207049 Rev 1.1 51/65If an output is currently in fault, its respective segment in the overview screen blinks slowly. On the output specific screen, the display alternates between the actual state (current value or logic state) and the fault type (open / short / curr / oor).
5.1.2.8 Voltage test
When selecting this mode the display shows:
The displayed value after the M-switch is released is the PERMANENT VOLTAGE Vp in Volts as measured on wire A01.
The two other modes of this group are switched voltage (Vs) and sensor voltage (Vsen), also expressed in Volts.
Vs is measured on wire B12. This power supply input is used to allow the APC200 to control the power down process – allowing it to save statistical information in FLASH before actually shutting down.
Vsen is measured off an internally generated voltage regulator and should be near 8.0V.
It can be measured on any unloaded analogue input channel (e.g. ANI0 on A11). The Vsen voltage is used as a reference for the analogue inputs.