Related Manuals for Altronic EPC-250
Summary of Contents for Altronic EPC-250
- Page 1 Installation and Operating Instructions Engine Performance Controller Form EPC-250 IOI 6-18...
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Page 2: System Description
The EPC-250 is intended as a direct field cause personal injury to operators or replacement for the existing legacy EPC-200 with little to no wiring retrofit. - Page 3 COMMUNICATIONS 2.0 MOUNTING THE EPC-250 The EPC-250 is preferably panel-mounted off the engine in such a manner as to minimize exposure to vibration. It has been designed as an easy retrofit for the existing EPC-200 with little to no rewiring needed.
- Page 4 When replacing an EPC-200, remove the 3-pin power terminal from the device and plug it into the power input terminal of the new EPC-250. Power require- ment is 24Vdc (48 watt max.). Note: The (+) and (-) terminals of the EPC-250 are polarity sensitive.
- Page 5 Board must be set to position 1. HMI Ethernet Communications The IP network configuration of the EPC-250 is edited via the network icon in the navigation pane. The pane has been purposely configured and is not ac- cessible for security purposes. If a specific network configuration is required it should be requested during ordering.
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Page 6: Terminal Board
0-5Vdc. The Modbus Terminal Board is designed to operate with industry-standard voltage—or current-amplified—output transducers in the range of 0-5Vdc or 0-25mA. Four series of transducers are available from Altronic: pressure trans- ducers (691201-x, 691204-x) and temperature transducers (691202/203- 300, 691212/213-450). -
Page 7: Hazardous Area Operation
INPUT COUPLE 5.0 HAZARDOUS AREA OPERATION The EPC-250 is CSA certified for CLASS I, DIVISION 2, GROUPS C and D areas, when mounted in a suitable enclosure. In addition, the following requirements must be met (refer to NFPA standard No. 493): The low voltage sensor switch wires within the panel enclosure must ... -
Page 8: Sequence Of Operation
Section 1 (Input/Scaled) Nine different device types can each be scaled to the desired units. Each pressure signal can be displayed in 8 different units. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018... -
Page 9: Section 2 (Channels)
6.11 In addition to the legacy sensor configuration page, a second option is available that allows two addition sensor type to be use. The EPC-250 accepts .5–4.5V and 4–20mA inputs which must be programmed within this configuration page. Before the input can be programmed as 4-20mA it must be selected on the terminal board by the CHANNEL SWITCH that internally connects a 200 EPC-250 IOI 6-18 All rights reserved ©... - Page 10 (+) and (–) terminals for that channel must be connected. 7.0 Analog Inputs Calibration The EPC-250 allows 31 analog inputs which have been carefully pre-assigned to a dedicated channel which can be enabled for any application as needed.
- Page 11 (Altronic Sensor), it is first necessary to know how the sensor relationship between voltage and displayed value (pressure, temperature, other) works. A standard 0.0 – 50PSI sensor will be examined. For the Altronic style sensor, .5V will display 0.0PSI and 4.5V will display 50.0PSI. Refer to Voltage vs Pressure chart.
- Page 12 To display the thermocouples in Celsius, replace the ‘-76’ with ‘-60’ for both and replace 1382 and 1472 with ‘750’ and ‘800’ respectively. These ranges should never be changed due to linearization tables. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 13 8.0 ANALOG CONTROL INPUTS For each of the dedicated input channels a HH/LL shutdown or alarm can be forced if enabled in the calibration page. The EPC-250 will annunciate the first in shutdown and lists all other shutdowns and alarms. This must be acknowledged by the operator by pushing Reset.
- Page 14 9.0 AIR/FUEL RATIO Before the EPC-250 controller can be used to its maximum advantage, the overall function of the control system must be clearly defined. It must be de- cided whether the controller will monitor both air/fuel ratio and ignition timing or only one of these functions.
- Page 15 When replacing an EPC-200, enter the existing three point values of the air/ fuel curve by pressing the Legacy Curve button. All the performance curves are entered into the EPC-250 Controller simply by entering the (x,y) coordinates of each point of the seven line segments. In the...
- Page 16 Each page represents an offset that can be used to manipulate the base air/fuel offset. The fuel offset is the main parameter for control of the air/fuel ratio. The desired air pressure is the sum of all offsets. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 17 Lean/Rich Arrows CAUTION: This feature is for making The EPC-250 allows the operator to easily change the air/fuel ratio if needed. small changes to an engine that is The controller will determine which segment will be affected when pressing in good running condition;...
- Page 18 Gain 10.1 The EPC-250 uses proportional control, which is the inverse of gain. Lowering the proportional value decreases the controller output. Inversely, increasing the gain value increases the controller output. A typical starting gain value is 60 to 100.
- Page 19 In Manual mode the reset button on the home page must be pressed in order to enter the auto mode. When input 31 is closed, exceeding the top or bottom limit will reset the EPC-250 if it is in manual mode.
- Page 20 Timing Retard vs. Air Manifold Pressure The operating values for the functions above are calculated separately accord- ing to user-entered curves, and the Offset is implemented by the EPC-250 Controller. Under certain conditions, there can be interaction between the Air/Fuel Ratio and the Timing Retard function.
- Page 21 OPSW2 on the DET1600/1610 or a PLC detonation output. The above feature works similarly to the Air Offset, but will advance or retard the timing when digital input 30 is closed. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 22 12.7 Home Position Position in degrees to which the timing should revert on startup following an EPC-250 shutdown reset. 12.8 Timing Timing value minus offset. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
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Page 23: Digital Inputs/Outputs
13.7 Flooding Function, Trips Output 7 (0/7) 0/7 will trip if the RPM entered is not reached before the fuel pressure en- tered in the O/7 input box is exceeded. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018... - Page 24 14.0 TIMERS A second function of the EPC-250 controller is to perform shutdown and alarms. The EPC-250 uses a standard class B timer (in seconds) for every input that adds a delay to the shutdown and alarm to debounce and eliminate nuisance shutdowns.
- Page 25 Allows the user to view the configured file in a readable format (.TXT). 15.5 PRINT EPC CONFIG A hard copy can be printed if the EPC-250 is connected to a printer. 15.6 CREATE DATA REPORT A report of the working data (press, temps, air/fuel ratio…etc)
- Page 26 15.7 PRINT EPC DATA A hard copy can be printed if the EPC-250 is connected to a printer. 15.8 OPEN DATA FILE VIEWER Allows the user to view the data in a readable format (.TXT). 16.0 MODBUS ADDRESS LIST REGISTERS...
- Page 27 MAXIMUM DISPLAYED NUMBER SIGNED INT 40073 SLOPE, X SIGNED INT 40074 OFFSET, B SIGNED INT 40075 MINIMUM DISPLAYED NUMBER SIGNED INT 40076 MAXIMUM DISPLAYED NUMBER SIGNED INT 40077 SLOPE, X SIGNED INT EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 28 SIGNED INT 40116 MAXIMUM DISPLAYED NUMBER SIGNED INT 40117 SLOPE, X SIGNED INT 40118 OFFSET, B SIGNED INT 40119 MINIMUM DISPLAYED NUMBER SIGNED INT 40120 MAXIMUM DISPLAYED NUMBER SIGNED INT EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 29 SIGNED INT 40159 MINIMUM DISPLAYED NUMBER SIGNED INT 40160 MAXIMUM DISPLAYED NUMBER SIGNED INT 40161 SLOPE, X SIGNED INT 40162 OFFSET, B SIGNED INT 40163 MINIMUM DISPLAYED NUMBER SIGNED INT EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 30 DECIMAL POINT / SENSOR CONFIG UNSIGNED INT 40271 DECIMAL POINT / SENSOR CONFIG UNSIGNED INT 40272 DECIMAL POINT / SENSOR CONFIG UNSIGNED INT 40273 DECIMAL POINT / SENSOR CONFIG UNSIGNED INT EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 31 Firmware version 10-01-14 contains additional Modbus registers starting at 41025 to 42048. These registers may be used for scratch pad memory locations for the application. There is a 100k write limit for all Modbus / EEPROM locations. EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 32 DRAWINGS SECTION FIGURE 1 — MODBUS TERMINAL BOARD FIGURE 2 — WIRING DIAGRAM, SENSOR AND TRANSDUCER INPUTS/POWER FIGURE 3 — EPC-250 MOUNTING DIMENSIONS FIGURE 4 — EPC-200/250 WIRING DIAGRAM EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 33 FIGURE 1 — MODBUS TERMINAL BOARD EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 34 FIGURE 2 — WIRING DIAGRAM, SENSOR AND TRANSDUCER INPUTS/POWER EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 35 FIGURE 3 — EPC-250 MOUNTING DIMENSIONS 11.56 5.53 293.62 140.50 8.00 203.20 5.28 134.154 12.78 13.53 324.61 343.66 EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...
- Page 36 FIGURE 4 — EPC-200/250 WIRING DIAGRAM 4 T+ + 12 13 14 15 16 17 18 19 20 12 13 14 15 16 17 18 19 20 EPC-250 IOI 6-18 All rights reserved © ALTRONIC, LLC 2018...