EMCP4.1/EMCP4.2 Caterpillar

The keys that are listed below are used for programming the EMCP 4 and are used for navigating within the menu structure.

Reference: For a full explanation of the use of the keys, refer to the Systems Operation, "Electronic Control Module (Generator Set)" section.

Illustration 1	g02082653
(1) Display screen (2) AC overview key (3) Engine overview key (4) Main menu key (5) Alarm acknowledge key (6) Event reset key (7) Event log key (8) Run key (9) Auto key (10) Stop key (11) Escape/Return key (12) Up key (13) Right key (14) "OK" key (15) Down key (16) Left key

Adjustment

Use the following procedure to adjust the voltage and frequency of the generator output.

1. From the "MAIN MENU", use the down navigation key (15) or the up navigation key (12) to navigate to the "CONTROL" menu.

   1. Press the "OK" key (14) to select the "CONTROL" menu. "VOLT/HZ CONTROL" will be displayed.

      Note: The voltage can be controlled from the EMCP 4 over CAN data link, discrete outputs, or analog outputs if a CDVR is installed on the generator. The speed can only be controlled if there is an ADEM on the engine.

   2. Press the "OK" key (14).

   3. Press the up navigation key (12) to increase the voltage and press the down navigation key (15) to decrease the voltage.

      Note: When adjusting the voltage using the navigation keys, an offset is applied to the set point value for "GENERATOR NOMINAL OUTPUT VOLTAGE". This set point is transmitted over the Primary CAN data link to the CDVR voltage regulator and is retained until battery power is cycled to the EMCP 4. Cycling the battery power to the EMCP 4 will remove the offset. Once the offset is removed, the transmitted value reverts to the set point value for "GENERATOR NOMINAL OUTPUT VOLTAGE".

   4. Press the left navigation key (16) to decrease the engine speed. Press the right navigation key (13) to increase the engine speed.

      Note: When the left and right navigation keys are used to adjust the frequency, an offset is applied to the set point value for "GENERATOR NOMINAL OUTPUT FREQUENCY". This data is transmitted over the Primary CAN data link to the engine controller and is retained until battery power is cycled to the EMCP 4. Cycling the battery power to the EMCP 4 will remove the offset. Once the offset is removed, the transmitted value reverts to the set point value for "GENERATOR NOMINAL OUTPUT FREQUENCY".

      Note: Unlike the set points or preferences, for instance contrast, any changes to this screen takes effect immediately. The "OK" key and escape key will not save or cancel changes.

Idle Speed and Rated Speed

The EMCP 4.1 and the EMCP 4.2 both can receive a discrete input from the customer, and also allow a selection on the screen or SCADA datalink for a customer to place the EMCP 4 into idle mode.

Note: The "Engine Forced Idle Feature Enable Status" parameter must be set to "Enabled" within Cat ET prior to seeing this menu option on the display. This set point is under the "Automatic Start/Stop" submenu in Cat ET.

If any signal is sending the generator set to Idle, the unit shall operate in idle. The EMCP 4 must also be able to receive a signal from the ADEM governor when the ADEM is operating in idle mode and switch the EMCP 4 to idle mode accordingly to disable protective relaying.

When the EMCP 4 is placed in idle mode, the EMCP 4 shall have the ability for a programmable output(s) to be wired out to signal the system to operate in idle, along with sending via CAN 1 datalink any signals required for the ADEM governing system such as operating at a set speed via the desired engine speed signal and also be able to send a discrete signal to the ADEM since the ADEM may not be using CAN speed control.

The engine speed can be toggled between the "LOW IDLE" and the "RATED SPEED" with the use of the control display.

This feature must be enabled under "AUTO START/STOP"

1. From the "MAIN MENU", select "CONTROL".

2. Press the down navigation key (15) to highlight "IDLE/RATED".

3. Press the "OK" key (14). The "IDLE/RATED" screen will be displayed. The current state will be displayed.

4. In order to change the state, press the "OK" key (14), then press the navigation keys to select the desired value.

5. Press the "OK" key (14) to accept the change.