SECM70

ECM-5642A-70

Hardware Features

70-Pin platform

Microprocessor: ST SPC5642A, 120 MHz

Memory: 2 M flash, 128 K RAM, 16 K serial EEPROM

Operating Voltage: 8–32 Vdc, 36 V (jump start), 5.5 V (crank)

Operating Temperature: –40 to +105 °C

Inputs

VR or digital crank position sensor

Digital cam position sensor

Up to 14 analogs

Up to 5 digital (4 switch, 1 speed)

up to 2 switch-type oxygen sensors

Optional wide-range oxygen sensor

Up to 2 knock sensors

Outputs

6 high-impedance injector drivers (up to 4 low impedance injector drivers)

Up to 8 electronic spark-triggers for smart injection coils

9 low-side drivers

3 lamp drivers

1 main power relay driver

up to 2 H-bridge drivers

Optional 3-phase brushless DC motor driver

1 sensor supply (5V)

Communications

2 CAN 2.0b channels

Product Summary

The SECM70 control platform fits a variety of applications, including gasoline and natural gas engines for power generation, forklifts, lift trucks, and on-highway vehicles. The SECM70 control is programmed to meet the specific needs of the prime mover and its driven load.

At the heart of the SECM70 control is a powerful 32-bit ST SPC5642A microprocessor that runs Woodward’s ControlCore operating system. Application programming is accomplished via Woodward’s MotoHawk application software tool. MotoHawk is a rapid controls system development tool that allows controls engineers to quickly create controls software directly within Simulink diagrams, which run on any MotoHawk-enabled electronic control modules. Application developers work directly in the Simulink environment and with a one-step build are able to go from an application model to a file that can be programmed directly into Woodward production hardware. MotoHawk provides a high-level programming environment for users who have control systems expertise but don’t necessarily have specific embedded programming skills. Once the application program has been generated and loaded into the SECM70 control via the CAN port, the user can view variables and tune the control using an appropriate service interface tool such as Woodward's Toolkit or MotoTune. Connection to other devices, such as a diagnostic tool, is accomplished by means of other CAN ports available on the control. The desired information flow is programmed into the control via MotoTune or ToolKit.

The SECM70 control consists of a single rigid printed circuit board attached to an aluminum housing using thermal adhesive, which is then closed and sealed with an aluminum cover. Connections to the control are made via a single 70-pin automotive-style sealed connector. The control can be mounted directly to the engine or frame using vibration isolators which are available pre-installed on the control or separately.

Datasheets

ECM-5642A-070 Family Engine Control Modules Specification Sheet (B03452)
ECM-5642A-070 MY17 Family Engine Control Modules Product Manual (B35088)
ECM-5642A-070 Controller Installation Manual (26784)

Legacy Data Sheets

ECM-5634M-070 Family Engine Control Modules Specification Sheet (36363)
ECM-5634M-070 MY14 Family Engine Control Modules Product Manual (26776)
ECM-5634M-070 MY15 Family Engine Control Modules Product Manual (35037)

Part Numbers

Part Num x=Inactive	Part w/ MTG HW	HW Version	Features
1751-6680 x	8923-2050	1452 (PROD)	Mobile Industrial
1751-6649 x	8923-2051	1402 (DEV)	Mobile Industrial, on-the-fly calibratible
1751-6681 x	8923-2052	1453 (PROD)	Power Generation
1751-6650 x	8923-2053	1403 (DEV)	Power Generation, on-the-fly calibratible
1751-6682 x	8923-2002	1459 (PROD)	Marine
1751-6756 x	8923-2475	1559 (PROD)	Marine (MY15 revision, use the 1459 target)
1751-6784 x	8923-2577	1759 (PROD)	Marine (MY17 revision, use the 1459 target)
1751-6653 x	8923-1987	1409 (DEV)	Marine, on-the-fly calibratible
1751-6755 x	8923-2474	1509 (DEV)	Marine, on-the-fly calibratible (MY15 revision, use the 1409 target)
1751-6785 x	8923-2578	1709 (DEV)	Marine, on-the-fly calibratible (MY17 revision, use the 1409 target)
1751-6719 x	8923-2253	1562 (PROD)	Mobile Industrial
1751-6713 x	8923-2258	1512 (DEV)	Mobile Industrial, on-the-fly calibratible
1751-6720 x	8923-2254	1563 (PROD)	Power Generation
1751-6714 x	8923-2259	1513 (DEV)	Power Generation, on-the-fly calibratible
1751-6722 x	8923-2256	1565 (PROD)	On-Highway
1751-6716 x	8923-2261	1515 (DEV)	On-Highway, on-the-fly calibratible
1751-6723 x	8923-2257	1566 (PROD)	Hydraulic
1751-6717 x	8923-2262	1516 (DEV)	Hydraulic, on-the-fly calibratible
1751-6767 x	8923-2583	1752 (PROD)	Mobile Industrial, MPC5642A
1751-6772	8923-2584	1702 (DEV)	Mobile Industrial, on-the-fly calibratible using MPC5642A
1751-6768 x	8923-2587	1753 (PROD)	Power Generation, MPC5642A
1751-6773	8923-2588	1703 (DEV)	Power Generation, on-the-fly calibratible using MPC5642A
1751-6769 x	8923-2581	1754 (PROD)	Marine, MPC5642A
1751-6774	8923-2582	1704 (DEV)	Marine, on-the-fly calibratible using MPC5642A
1751-6770 x	8923-2585	1755 (PROD)	On-Highway, MPC5642A
1751-6776	8923-2586	1705 (DEV)	On-Highway, on-the-fly calibratible using MPC5642A
1751-6771 x	8923-2579	1756 (PROD)	Hydraulic, MPC5642A
1751-6777	8923-2580	1706 (DEV)	Hydraulic, on-the-fly calibratible using MPC5642A

Note:

• Marine MY15 1751-6756 replaces 1751-6721. Hardware is identical, but has a newer bootloader.
• Marine MY15 (DEV) 1751-6755 replaces 1751-6715. Hardware is identical, but has a newer bootloader.
• PROD MY17 is INACTIVE and DEV MY17 can be used for production

Related Part Numbers

Part Number	Description	Available Online
8923-1761	Connector Kit	Buy Online!
1635-1772	Connector Only	Buy Online!
8996-2162 8996-2163 8996-2164	Crimp Tools
8996-2167	Removal Tools
1635-1800	Boot Key	Buy Online!
5404-1141	Pig Tail	Buy Online!
5404-1364	Development Harness	Buy Online!
5404-1341	Desktop Simulator Harness	Buy Online!

Model Variant Features

Function	MI-1402/1452	MI-1512/1562 MI-1702/1752	PG-1403/1453	PG-1513/1563 PG-1703/1753	Marine-1409/1459	Marine-1509/1559	Marine-1704/1754	OH-1515/1565 OH-1705/1755	Hydraulic-1516/1566 1706/1756
	1751-6649/6680	1751-6713/6719	1751-6650/6681	1751-6714/6720	1751-6653/6682	1751-6715/6721	1751-6774/6769	1751-6716/6722	1751-6717/6723
	PIN #
AN1 (221k_PD)	28	28	28	28	28	28	28 (10k_PD)	28	28
AN2 (221k_PD)	24	24	24	24	24	24	24	24	24
AN3 (221k_PD)	22	22	22	22	22	22	22	22	22
AN4 (221k_PD)	42	42	42	42	42 (2.21k_PU)	42 (2.21k_PU)	42 (2.21k_PU)	42	42
AN5 (4.75k_PD)	43	43	43	43	43 (2.21k_PU)	43 (2.21k_PU)	43 (2.21k_PU)	43	43 (221k_PD)
AN6 (4.75k_PD)	47	47	-	-	47 (2.21k_PU)	47 (2.21k_PU)	47 (2.21k_PU)	-	47 (221k_PD)
AN7 (51.1k_PD)	44	44	44	44	44 (1ms T )	44 (1ms T )	44 (1ms T )	44	47 (221k_PD)
AN8 (4.75k_PD)	45	45	45	45	45 (51.1k_PD)	45 (51.1k_PD)	45 (51.1k_PD)	45	45 (221k_PD)
AN9 (2.21k_PU)	39	39	39	39	39 (1k_PU)	39	39	39	39
AN10 (2.21k_PU)	40	40	40	40	40 (1k_PU)	40	40	40	40
AN11 (2.21k_PU)	41	41	41	41	41 (1k_PU)	41	41	41	41
AN12 (4.75k_PU)	59	59	59	59	59 (1k_PU)	59 (221k_PD)	59 (221k_PD)	59	59 (51.1k_PU)
AN13 (4.75k_PU)	60	60	60	60	60 (2.21k_PU)	60 (221k_PD)	60 (221k_PD)	60	60 (51.1k_PU)
AN14 (10k_PU)	61	61	61	61	-	-	-	61	-
AN16 (51.1k_PD)	-	-	-	-	46	46	46	-	62 (221k_PD)
AN17	-	-	-	-	-	-	-	-	-
AN18	-	-	-	-	-	-	-	-	64
AN19	-	-	-	-	-	-	-	-	63
EGO1	65/66	65/66	65/66	65/66	-	-	-	65/66	65/66
EGO2	49/50	49/50	-	-	-	-	-	-	49/50
UEGO	-	-	47(SNS), 50(SR), 3(HTR), 49(TG), 33(INRC)	47(SNS), 50(SR), 3(HTR), 49(TG), 33(INRC) (Improved accuracy)	-	-	-	47(SNS), 50(SR), 3(HTR), 49(TG), 33(INRC) (Improved accuracy)	-
EK1	63/64	63/64	63/64	63/64	63/64	63/64	63/64	63/64	-
EK2	62/46	62/46	62/46	62/46	-	-	-	62/46	-
SWG1	25	25	25	25	25	25	25	25	25
SWG2	27	27	27	27	27	27	27	27	27
SWG3	29	29	29	29	29	29	29	29	29
SWG4 / BOOT	26	26	26	26	26	26	26	26	26
CAM_DG	30	30	30	30	30	30	30	30	30
CNK_DG	31	31	31	31	31	31	31	31	31
SPD	33	33	-	-	-	-	-	-	33
CNK_VR/SPD_VR	16/17	16/17	16/17	16/17	16/17	16/17	16/17	16/17	16/17
LSO1	7	7	7	7	7	7	7	7	7
LSO2	3	3	3	3	3	3	3	3	3
LSO3 (CS)	4	4	4	4	4	4	4	4	4
LSO4	5	5 (Inductive capable)	5	5 (Inductive capable)	5	5	5	5 (Inductive capable)	5
LSO5	9	9 (Inductive capable)	9	9 (Inductive capable)	9	9	9	9 (Inductive capable)	9
LSO6 (CS)	10 (no CS)	10 (no CS) (Inductive capable)	10 (no CS)	10 (no CS) (Inductive capable)	11 (10 no CS)	11 (10 no CS)	11 (10 no CS)	10 (no CS) (Inductive capable)	11 (166mA/Volt)
LSO7 (CS)	15 (no CS)	15 (no CS)	15 (no CS)	15 (no CS)	15	15	15	15 (no CS)	15 (166mA/Volt)
LSO8	20	20	20	20	20	20	20	20	20
LSO9	23	23	23	23	23	23	23	23	23
MPRD	55	55	55	55	55	55	55	55	55
LAMP1	58	58 (Improved diag)	58	58 (Improved diag)	-	-	-	58 (Improved diag)	58
LAMP2	57	57 (Improved diag)	57	57 (Improved diag)	-	-	-	57 (Improved diag)	57
LAMP3	56	56 (Improved diag)	56	56 (Improved diag)	-	-	-	56 (Improved diag)	56
INJ1 (PH)	34	34	-	-	-	-	-	34	34
INJ2 (PH)	35	35	-	-	-	-	-	35	35
INJ3 (PH)	1	1	-	-	-	-	-	1	1
INJ4 (PH)	-	-	-	-	-	-	-	18	-
INJ4	12	12	-	-	12	12	12	-	12
INJ5	13	13	-	-	13	13	13	-	-
INJ6	14	14	-	-	14	14	14	-	-
H1	51/52	51/52	51/52	51/52	-	-	-	51/52	51/52
H2	-	-	34/35	34/35	-	-	-	-	-
3-Phase	-	-	-	-	51/34/52	51/34/52	51/34/52	-	-
EST1	6	6	6	6	-	-	-	6	6
EST2	8	8	8	8	-	-	-	8	8
EST3	11	11	11	11	-	-	-	11	-
EST4	21	21	21	21	21	21	21	21	21
EST5	18	18	18	18	18	18	18	13	18
EST6	19	19	19	19	19	19	19	14	19
EST7	-	-	13	13	-	-	-	-	13
EST8	-	-	14	14	-	-	-	-	14
MotorPhaseVSense_A	-	-	-	-	58	58	58	-	-
MotorPhaseVSense_B	-	-	-	-	57	57	57	-	-
MotorPhaseVSense_C	-	-	-	-	56	56	56	-	-

17xx Modules

• Available since MotoHawk 2017b Beta 2 or newer
• RAM and FLASH increase on MPC5642A processor
• Encrypted reprogramming of application using ISO15765 available for certain variants

15xx Modules

• Available since MotoHawk 2015a SP0 or newer
• Improved diagnostic on LAMP pins
• Increased UEGO resolution and accuracy
• Increased switching speed on LSO4/5/6/7 and H2
• Allow LSO4/5/6 to drive inductive loads

Software Variant Features

14xx Modules

• Hardboot firmware version 2.06
• Programming not supported on CAN2

15xx Modules

• Modules that support UEGO expose an additional internal ADC resource for FVOUT. This provides the user an option to use a slightly higher resolution reading.
• Hardboot firmware version 2.08
• The factory installed application supports XCP communications and reflashing using CAN_2 at 500k with CRO = 0x188C0CF9 and DTO = 0x188BF90C
• Reprogramming supported on CAN2

Compiler

Green Hills version 4.2.4
Green Hills version 2015.1.6 (Since MotoHawk 2017b)
GCC for PowerPC EABI-SPE version 4.6.0

BootKey

A malfunctioning application previously loaded on the SECM70 can be recovered using the BootKey recovery.

The BootKey signal needs to be connected to the SWG4 pin.

Bootstrap

The SECM70 can be forced to remain in the firmware bootloader by applying a bootstrap sequence. The bootstrap sequence is:

Pin	State for Boot
AN1	High
AN2	High
AN3	High
AN4
AN5
AN6
AN7
AN8
AN9	Low
AN10	Low
AN11	Low

BLDC Motor Control

An example model implementing trapezoidal drive of the motor phases has been created which can be used on certain SECM70 module variants. The example includes code to ensure that phases are activated and de-activated in an orderly manner to keep drive quiet and smooth. The strategy relies on Input Capture interrupts to commutate the phases, so CPU performance is affected by the speed of the motor. The demonstration motor for the example has 12poles, so 12 interrupts per rev. At 100% duty the motor rotates at 2300rpm. CPU idle is 90% down from 98% at 0 RPM.

For further details, please refer to the BLDC Driver Sample Model project for MotoHawk. It requires MotoHawk 2018a Beta4 or later.

Example of motor which can be driven by this example:

L9780 UEGO Control

An example model is also available to illustrate how to communicate with the L9780 Wideband UEGO controller found within some SECM70 variants. The model is provided as-is as a guide only and contains no sophisticated strategies. The user is expected to have access to L9780 datasheets and application notes in order to create a suitable sensor strategy for their system.

NOTE: UEGO Sensors can be damaged if controlled incorrectly.

For model download, see L9780 Sample Model project for MotoHawk. It requires MotoHawk 2017a Beta3 or later.

Frequently Asked Questions/Topics

Peak and Hold Constraints

This hardware is able to programatically set the peak and hold currents of capable injector outputs. However there is an interdependency between the peak and hold and not all values are possible.

The Peak Hold Set Block also supports outputs that report the Currents that will be applied (once constrained).

Is the Marine variant suited for sensorless 3-phase brushless motor?

To introduce this answer, we review that it is possible to run a 3-phase brushless DC motor with and without position sensors. A position sensor can directly indicate the position of a motor shaft. Sensorless systems are advanced enough to determine the position of the shaft through back-EMF waveforms, although complexity will increase greatly under very small signal to noise ratios (when the motor is just starting and at very slow speeds.)

Woodward has design protected for sensorless 3-phase brushless DC motor operation in SECM70, but the Marine variant is not suited for this application.

The Marine variant SECM70 should always be designed to operate a 3-phase brushless motor with hall position sensors connected to module pins 56,57,58 for PhaseC, PhaseB, PhaseA, respectively. MotoHawk Input Capture blocks can then be used with the resources MotorPhaseVSense_A, MotorPhaseVSense_B, and MotorPhaseVSense_C. The Input Capture behavior allows the application to be notified of an input pin state change, which correlates to a sample every 60 degrees. The algorithm to calculate motor position and speed is outside the scope of what MotoHawk is providing in support of this module.

Can I diagnose PWM EST outputs?

Due to the nature of the hardware, EST diagnostics are only available when driven as a sequence and not as a PWM.

The ESTs have a caveat that certain groups must not turn off at the same time as there is shared diagnostic HW.

The groupings where you should avoid turning off at the same time are:
EST 1,2
EST 3,4
EST 5,6,7,8

Why is LSO6 current sense not working?

On modules that support current sense for the resource LSO6, the load must be connected to pin 11. Pin 10 is also connected to the LSO6 driver but before the current measurement sense resistor and therefore current will not be measured.

How is LSO3 different than LSO6/LSO7 on the Marine variant?

LSO3 current sense is only able to measure current when the driver is in the On state. This is common to all the module variants. The Marine variant has additional current sense for LSO6 and LSO7. The current measurement at pins 11 and 15, respectively, will measure the current when the driver state is On and Off.

Is there an available ECU Side connector?

TE Connectivity, formerly known as Tyco Electronics Ltd, provides an inline male side mating connector which will mate to Woodward part number 1635-1772. The TE Connectivity part number is 1438726-1. More information can be found on the TE Connectivity website.

What is the maximum pulse length that can be delivered for SECM70 when using 'Unsynchronized PSP OneShot Trigger'?

The 'Unsynchronized PSP OneShot Trigger' total duration input port is specified with uint32 data type, but the hardware has a maximum achievable duration of 839 ms.

Why does EST7 and EST8 experience PWM transients when EST5 or EST6 is used for ignition?

As mentioned in this previous FAQ, the diagnostics for ESTs are grouped. If any EST in the group of EST5, EST6, EST7 or EST8 are requested to have diagnostics, then the entire group will experience a diagnostic pulse at the end of pulse event.

In some cases, it may be better to have EST3 through EST8 used for ignition. Using EST1 and EST2 for PWM behavior are free from the diagnostic grouping experienced by the EST5 to EST8 group employed by hardware.

Does the On-Highway variant skip EST5 and EST6 and include EST7 and EST8?

In the SECM70 hardware manual, it appears as though EST5 and EST6 are skipped, but MotoHawk numbers the EST output sequentially. This is done so that the standard Sequence blocks will operate across all 6 ESTs, whereas the block is not designed to be able to deal with a break in the EST numbering. MotoHawk operates EST5 on pin 13 and EST6 on pin 14. Other variants of SECM70 may refer to these pins as EST7 and EST8 (respectively.)

Can the Crank/CAM digital inputs support a 0 V to battery position sensor?

Yes, the maximum voltage these inputs can be in the circuitry is ~32V. It is common to utilize 5 volt TTL style position sensors, but a position sensor which provides a signal from ground to VBatt is acceptable.

What is the maximum frequency which can be measured on the CNK input?

The datasheet indicates the CNK has an Anti-aliasing filer 1 pole at 20 usec. 1/20 usec = 50 KHz. The SECM70 has silicon that should allow most frequencies to be read, but very high frequency readings may become granular depending on the input pin type. Typically inputs up to 12KHz are considered normal and software will read them accurately with good granularity. Above that the user should test and confirm that the granularity and accuracy is sufficient for their application.