Veethree VeeConnect ECBU User manual

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VeeConnect 12-Channel Electronic Circuit Breaker Unit (ECBU)
Figure 1 –VeeConnect 12-Channel Electronic Circuit Breaker Unit

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System Block Diagram
Figure 2 –VeeConnect 12-Channel Electronic Circuit Breaker Unit –Block Diagram

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Circuit Breaker Channels
The VeeConnect ECBU is a 12-channel power control unit, with the following features:
•Each ECB channel has a programmable current rating of between 2 to 20A
•Each ECB channel is controllable through the VeeConnect Display
•Each ECB channel is controllable via discrete or analog inputs, configurable through the
VeeConnect Display
•Each ECB channel can be manually controlled using the manual buttons on the Membrane
Switch Panel
•ECB channels 6, 7 and 8 include reverse-blocking to prevent reverse current from feeding back
into the power bus. These channels are the best location for loads that might be connected to
the battery at all times, such as a bilge pump
•ECB channels 9, 10, 11, and 12 can operate as autonomous breaker channels, or can be paired
as a polarity reversible pair, ideal for DC motor applications such as a hatch motor or anchor lift.
•When used as polarity reversible pairs, ECB channels 9 and 10 can work as a pair, and channels
11 and 12 can work as a pair
•Each ECB channel has trip features, which are a function of I2t (current2*time), similar to the
behavior of a mechanical or thermal circuit breaker
Reversible Motor Breaker Channels
As noted above, ECB channels 9-12 can be operated as reversible motor drive channels. The proper
configuration for this type of operation is as shown below. ECB channels 9-10 can form one reversible
motor pair, and ECB channels 11-12 can form another. No other ECB channels can be used this way.
CAUTION: There is no current protection in the low-side path to ground. A drive channel must always
include both high-side and low-side drivers for circuit breaker protection.
CAUTION: When configured as reversible motor drive channels, the channels should be configured as
one of the following to prevent a motor from running continually:
•Discrete input connected to a limit switch to turn the channel off upon reaching the
limit
•Set Sequencer Time On to a finite value to turn the channel off after a selected period.

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Analog Inputs
12 Analog inputs on the J1 connector can range from 0-28VDC, with a bandwidth of <100Hz. See Tables
1 and 2 below. The system response to the analog inputs is configured through the VeeConnect Display.
Discrete Inputs
12 Discrete Inputs on the J1 connector are configured as Open/Ground inputs, with OPEN being the
inactive state and GROUND being the active state. The system response to the discrete inputs is
configured through the VeeConnect Display.
Battery/Ignition Switch Input
The ECBU has an Ignition Switch Input which is intended to be driven high by the ignition aux power
tap. A 12V BUS voltage on this input will wake the ECBU up from low quiescent power mode. Turning
the ignition switch off shuts the ECBU system down.
Manual Interface
The ECBU Breaker has a manual interface on the enclosure consisting of:
•A Manual Override Switch that is used to toggle each ECB channel ON and OFF by momentarily
pressing the membrane switch.
•A green BREAKER ON indicator, indicating that an ECB is ON. This is a hardware indication, which
is controlled without the use of the system firmware.
•A red TRIPPED LED, which indicates that an ECB is TRIPPED or otherwise disabled. This indication
IS generated and controlled by the system firmware.
•Green INPUT POWER LED, which indicates that the ECBU is connected to battery power greater
than 5.2VDC.
•Green NMEA STATUS LED, which indicates activity on the NMEA 2000 bus.
Digital Communications Interfaces
The system includes the following digital communications interfaces:
•A USB port is provided for maintenance access, for updating the system firmware, for loading
configuration databases, and for saving configuration database. This port can also source up to
500mA for charging USB devices.
•A NMEA 2000 port is provided to allow this system to communicate with the VeeConnect
Display.

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NMEA 2000 –VeeConnect Interface
The ECBU includes a NMEA 2000 interface that is designed to be used with the VeeConnect T5 or T7i
Display. The ECBU is configured by the Display via the NMEA 2000 interface, and its configuration is
stored by the ECBU.
For further information on VeeConnect Display’s, refer to https://www.veeconnect.info
Connector Pin Diagrams
Connector
Pinout (Front View)
Mating
Connector Part
Number
BREAKER OUTPUTS
TE CONNECTIVITY
PN DTP06-4S-E004
GPIO INTERFACE
TE CONNECTIVITY
PN 776164-1
NMEA 2000
NMEA 2000
COMPLIANT
Table 1 –Connector Pin Diagrams

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Connector Pin Descriptions:
Connector J1 - GPIO INTERFACE (Recommend 16-20AWG wire)
Pin
Function
Pin
Function
Pin
Function
1
GP DISCRETE INPUT #1
13
GP DISCRETE INPUT #2
24
GP DISCRETE INPUT #3
2
GP DISCRETE INPUT #4
14
GP DISCRETE INPUT #5
25
GP DISCRETE INPUT #6
3
POWER GROUND
15
GP DISCRETE INPUT #7
26
POWER GROUND
4
GP DISCRETE INPUT #8
16
GP DISCRETE INPUT
#10
27
GP DISCRETE INPUT #9
5
GP DISCRETE INPUT #11
17
POWER GROUND
28
GP DISCRETE INPUT #12
6
NOT CONNECTED
18
NOT CONNECTED
29
IGNITION SWITCH INPUT
7
NOT CONNECTED
19
GP ANALOG INPUT #1
30
SIGNAL GROUND
8
GP ANALOG INPUT #2
20
SIGNAL GROUND
31
GP ANALOG INPUT #3
9
GP ANALOG INPUT #2
21
GP ANALOG INPUT #4
32
GP ANALOG INPUT #6
10
GP ANALOG INPUT #5
22
GP ANALOG INPUT #7
33
SIGNAL GROUND
11
GP ANALOG INPUT #8
23
GP ANALOG INPUT #10
34
GP ANALOG INPUT #9
12
GP ANALOG INPUT #11
35
GP ANALOG INPUT #12
Table 2 –J1 Input Connector Pinout
Connector J2-J4 - BREAKER CHANNEL OUTPUT (Recommend 10-14AWG wire)
J2 –CHANNELS 1-4
J3 –CHANNELS 5-8
J4 –CHANNELS 9-12
Pin
Function
Pin
Function
Pin
Function
1
BREAKER CHANNEL 1
1
BREAKER CHANNEL 5
1
BREAKER CHANNEL 9
2
BREAKER CHANNEL 2
2
BREAKER CHANNEL 6
2
BREAKER CHANNEL 10
3
BREAKER CHANNEL 3
3
BREAKER CHANNEL 7
3
BREAKER CHANNEL 11
4
BREAKER CHANNEL 4
4
BREAKER CHANNEL 8
4
BREAKER CHANNEL 12
Table 3 –J2-J4 Breaker Channel Connector Pinouts
Connector J7 - NMEA 2000 CONNECTOR
Pin
Function
1
CABLE SHIELD (SHIELD)
2
OPEN (NET-S)
3
GROUND (NET-C)
4
CAN_HIGH (NET-H)
5
CAN_LO (NET-L)
Table 4 –J7 NMEA 2000 Connector Pinout

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Fault Codes
Code
Trip Cause
Comments
FT
Fast Trip
Circuit breaker channel has hard short
I2
I2T Trip
Circuit breaker channel has soft fault
FO
Fail Open
Circuit breaker switch failed open circuit
FS
Fail Short
Circuit breaker switch failed short
ECBU Fault Indications (Red LEDs)
Red LEDs
Indication
Comments
All On
Process Not
Running
ECB Channel x On
FT or I2
ECB channel tripped; ECB channel x LED continuously illuminated
ECB Channel x Flash
@2 Hz
FO or FS
ECB channel tripped; channel x LED flashes
This condition will usually mean that the breaker is unresponsive
to the override switches and the green LED will either remain on
or off depending on the fault.
All three of these Analog subsystem faults are reported via unique blink codes using the red LEDs. One or more
blink codes are displayed on those LEDs which are not indicating a trip or ECB fault. Blink codes are indicated by
some number of fast blinks followed by an off period. The system cycles through the blink code for each fault
which is present.
If all three faults are present there will be a sequence of xix blinks and three pause, as in: blink - pause - blink blink
- pause, blink, blink, blink - pause, which then repeats.
Single Blink –Pause
–
Repeat
Voltage Monitor
fault
If the voltage monitor inputs cannot be read, the ECB fault
detection described in the previous paragraph is disabled. Voltage
will continue to be reported on the NMEA bus but it may be
incorrect.
Blink followed by an off period
Analog subsystem fault –vSense
Two Blinks –Pause
–
Repeat
Current Monitor
fault
If the current monitor inputs cannot be read the I2T trip detection
is disabled. Current will continue to be reported on the NMEA bus
but it may be incorrect.
Blinks followed by an off period
Analog subsystem fault - iSense
Three Blinks –Pause
–
Repeat
Analog GPI fault
If the analog GPIs cannot be read, any actions programmed in the
Configuration Data Base based on analog GPIs are disabled.
Blinks followed by an off period
Analog subsystem fault –gpi inputs

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Installing ECBU Software
USB Flash Drive Requirements –512 Byte Sectors
The ECBU software is loaded per the following:
1. Copy Ecbu.bin to the root directory of the USB Flash Drive
2. Install USB Flash Drive
3. Power On ECBU
4. Red LEDs 2 and 3 turn On
5. Red LED 4 turns On when the software is installed
6. Remove USB Flash Drive
7. Cycle power
8. Red LEDs 1 –12 individually turn On then Off
ECBU Software
The ECBU software provides the control and status interface to to/from each ECBU channel. As
described above, each of channels can be configured via the VeeConnect Display and is saved in
EEPROM when changes are made.
The software stores specific data during a power down in EEPROM:
•Last State (Off, On, Faulted)
•Run-Time Statistics (Max Temperature, On Time and Max Current)
The ECBU will support the following features:
Soft Start/Stop
A Soft Start can be used for an ECB that needs to gradually reach its initial operating state. For a
PWM-enabled ECB, the output will be slowly ramped up, using the ramp time, from 0% to 100%
duty cycle. This is used to avoid startup stress and surges (inrush current) by providing the
capability to control supplied voltage. For Soft Stop, the ECB output will be ramped down from
the current ECB PWM state to 0% using the ramp time.
Coordinated ECB Control
ECBs are typically individually controllable, but may be grouped to form a Coordinated ECB. For
a Coordinated ECB, ECBs are configured to operate as Primary and Secondary. The lower
number ECB is configured as Primary, and the adjacent ECB(s) are configured as Secondary. For
a Coordinated ECB, all ECBs are maintained with a single command.
An ECB can be configured to Trip when an adjacent ECB has tripped.
Sequencer Control
The Sequencer Control provides for programmable control of an individual ECB or Coordinated
ECB. This provides for arbitrary ensemble behavior of an individual ECB or Coordinated ECB.

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Examples of such behavior include blower timer, and time sequencing (recirculation pumps in
live wells).
The Sequencer is triggered when the primary is turned on, and is disabled when the primary is
turned off.
Inhibit Fail Short Fault
The software may need to inhibit Fail Short fault reporting for an ECB that is Off, but voltage is
detected. This is applicable for ECBs 5 - 7, (e.g., Bilge Pump on a float switch) where voltage
may be back feed from an outside source. This prevents a false positive fault report for those
items that may have back fed voltage on the line.
Copy Configuration Database to USB Drive
The Display can issue a request message to the ECBU to save its configuration Database to a
USB Flash drive.

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ECBU Configuration Database
The ECBU configuration database can be modified via the Veethree Display. The default configuration
for each of the 12 ECBs is set as follows:
Parameter
Valid Values
Default Value
Comments
Programmed Rating
2 - 20 A
2
Power-Up Default State
Last State (prior to Power Down)
Off
On
Last State
Switch Control
Digital (CAN)
Discrete Input
Analog Input
Digital (CAN)
Assigned Discrete Input
(DI)/Analog Input (AI)
0 - 12
0
ECB State when DI/AI
Active
Off
On
Off
PWM Enable
Disabled
Enabled
Disabled
AI Trigger Point
0 - 12V
0
AI Release Point
0 - 12V
0
ECB String #1
18 ASCII characters
ECB #
ECB String #2
10 ASCII characters
<Blank>
ECB String #3
10 ASCII characters
<Blank>
ECB String #4
10 ASCII characters
<Blank>
Reversible Motor
False
True
False
Channels 9-10, 11-12 support
Reversible Motor
Inhibit Fail Short
Not Inhibited
Inhibited
Not Inhibited
Soft Start Enable
Disabled
Enabled
Disabled
Soft Ramp Time
0 - 255
0
0.1 Seconds
Soft Stop Enable
Disabled
Enabled
Disabled
Coordinated ECB Role
Primary
Secondary
Primary
Coordinated ECB Trip
Trip independently
Trip as a set
Trip
independently
Trip as a set is only valid for ECBs
configured as Secondary
Sequencer Control Enable
Disabled
On-Stay Off
On-Off-Repeat
Disabled
Sequencer Offset
0 - 255
0
Not set by the Display
Sequencer –Time On
0 - 255
0
Minutes
Sequencer –Time Off
0 - 255
0
Minutes

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Also, the following is stored as part of the configuration:
•Device Instance
•Configuration Information (NMEA PGN 126998 Description Data)