Class1 Electrical System Manager User Manual
Standard Features
Main Battery bank monitoring
Isolated Battery monitoring
Electrical Load Sequencing
Electrical Load Shedding
Over Voltage Indication
High Idle Control
Automatic or Manual Reset Modes
Reverse Polarity / Short Circuit Protected
Rugged Metal Enclosure
LED Status Display
Battery Warning
A vailable Features
Positive or Ground Master Switch
Integral Relay Distribution Board
Positive or Ground Output for Loads
1
Standard Features
Sequence (J3d)
This mode will performs the function of sequencing the electrical loads on
and off.
Automatic Load Reset (J2b)
Any load which has been shed will automatically be controlled off for a minimum of five minutes, regardless of the state of the electrical system. After the
electrical system becomes stable, the loads will be controlled back on by the
system. Any shed load can be turned on immediately by performing a manual
load reset (see next section).
Manual Load Reset (J2a)
When this mode is enabled, any load which has been shed will remain off
until the system manager is manually reset.
Manually Resetting the System
There are two levels of manual reset. LOAD RESET and FULL RESET.
Load Reset: The shed loads are manually reset by toggling the master switch
off and then on again within two (2) seconds. When a load reset is performed, all loads which are currently shed of will be sequenced on. The
system manager will refrain from shedding any load for fifteen minutes. After
fifteen minutes, normal operation of the system manager will resume.
Full Reset: Full system reset will occur when the master switch is turned off for
at least two seconds. After full reset, the loads will be sequentially turned off
and the system will resume normal operation when the master switch is toggled
to the on position.
Over-Voltage Indicator (J4d)
The system manager continually monitors the system voltage and will activate an output when it detects that the constant system voltage has increased
above 14.5 volts. As in all modes, the system will not react to the spurious
voltage transients which may exist in the electrical system as loads and devices are cycled.
Fast Idle Control (J4c)
The system manager is capable of becoming a part of a system which controls a fast idle device. The fast idle output will activate whenever the system
voltage is low. The output will deactivate if the system manager is reset or the
voltage becomes good.
This circuit must only be utilized when the appropriate interlocks are present.
2
Battery Warning
The Battery Warning feature is a special output which indicates different states
of the electrical system. The Class 1 system manager continuously monitors
the rate of discharge (voltage drop per unit time) of the electrical system. The
Battery Warning indicator will flash at a rate proportional to the discharge rate.
More simply, the faster that the voltage is dropping, the faster the indicator will
flash.
When sudden voltage drops are recognized by the system, the light will flash
quickly for three seconds to indicate an instantaneous voltage drop. After the
quick flash, the indicator will rever t back to its previous flash rate.
Once the voltage has dropped to a critical level which requires loads to be
shed, the indicator will burn steady and remain on as long as there are loads
in the shed state or loads are in the manual reset state and voltage is low.
The Battery Warning option can assist an operator in identifying a potential
low voltage situation in advance giving the opportunity to react to a poor
voltage situation before it happens.
NOTE: Refer to the section titled “Specifications” at the end of this manual for
more descriptive information on these available modes.
The indicator panel consists of four LED’s:
POWER ON (GREEN WIRE)
This LED illuminates when power is applied to the
System Manager.
BATTERY WARNING (YELLOW WIRE)
This LED is connected to terminal TB#8 and flashes
when system voltage drops below 13.2 VDC.
ISOLATED BATTERY LOW (BLUE WIRE) OPTION
This LED is connected to TB#7 and illuminates
when an auxiliary battery’s voltage drops below
11.8 VDC for more than two minutes.
ST ANDARD P ANEL DISPLA Y
The Class1 Electrical System Manager is supplied with an indicator
panel.The indicator panel is designed
to fit in a standard rocker s witch cutou t (7/8” x 1-1/2”).
OVER-VOLTAGE OR FAST IDLE (BROWN WIRE)
This LED is connected to TB#15.
GROUND (BLACK WIRE)
Connected to a good ground source.
3
System Configuration
The Electrical System Manager is configured by the use of five jumpers
labeled J1 through J5.
J1 and J5 control battery monitoring (MAIN or MAIN and ISOLATED.)
J2 controls the load reset method (MANUAL or AUTOMATIC.)
J3 controls Load Sequencing (OFF or ON.)
J4 controls when Terminal bar #15 is active (Low Voltage or High Voltage.)
The System Manager cover must be removed to change its operating mode.
J1 through J4 are located at the lower right edge of the circuit board, J5 is
located next to TB #10.
JMP DESCRIPTION
J1
J2
J3
J4
J5
TB#15
TB#14
TB#13
TB#12
TB#11
TB#10
TB#9
TB#8
TB#7
TB#6
TB#5
TB#4
TB#3
TB#2
TB#1
BATTERIES MAIN
RESET
SEQUENCE
TERMINAL #15
FUNCTION
JUMPERS
B
A
J5
POSITION
A
MANUAL
MAIN
POSITION
B
MAIN/
ISOLATED
AUTO
MAIN/
ISOLATED
POSITION POSITION
C
OFF
FAST IDLE
CONTROL
D
ON
OVER-VOLT
LIGHT
MODE CONFIGURATION
Figure1
4
Main Battery Only Configuration
Relay 1
Relay 6
Load
Relays
Dash
Switches
Load SW 1
Load SW 6Load SW 6
Jumper J1 and J5 are
placed in pos. A.
This provides for seven
load control outputs that
can be sequenced and
shed. These outputs are
at terminals #1 through #7.
The complete terminal descriptions for this mode
are shown in Figure 2,
and one method of wiring
is shown in Figure 3.
Over Voltage Lgt/
High Idle Control
Ground
Ignition
No Connection
Shed Enable
Master Switch
System Override
Battery Warning Lt
Load Level 7
Load Level 6
Load Level 5
Load Level 4
Load Level 3
Load Level 2
Load Level 1
TB #15
TB #14
TB #13
TB #12
TB #11
TB #10
TB #9
TB #8
TB #7
TB #6
TB #5
TB #4
TB #3
TB #2
TB #1
A
J5
B
MODE CONFIGURATION
J2 J4
J1
ACBD
J3
Figure 2
5
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