BOOK# 091-96, 3-3-98
INSTRUCTION MANUAL
LOAD MANAGER 1H
UNDER-VOLTAGE DETECTOR RELAY
WITH HYSTERESIS
MODEL #091-96-XX
A BATTERY VOLTAGE MONITOR WHICH
DETECTS AN UNDER-VOLTAGE CONDITION.
3 YEAR WARRANTY
KUSSMAUL ELECTRONICS CO., INC.
170 CHERRY AVE., WEST SAYVILLE, N.Y. 11796
TEL: in NY
631-567-0314631-567-0314
631-567-0314 TOLL FREE:
631-567-0314631-567-0314
800-346-0857800-346-0857
800-346-0857 FAX:
800-346-0857800-346-0857
631-567-5826631-567-5826
631-567-5826
631-567-5826631-567-5826
INTRODUCTION:
The 091-98-xx LOAD MANAGER 1H is a device, which continuously monitors the voltage of
the battery. The unit is factory set to actuate at 12 volts, for 12 volt models or 24 volts for 24volt models, but may be adjusted to other voltages. The output relay is capable of switching
30 amperes, and both a “normally open” and normally closed” contact are provided.
INSTALLATION:
Connect the Load Manager 1H to the battery, the load and the fuse as illustrated in figure 1.
This is a typical circuit. Other circuit configurations are possible. It is always necessary to
connect the Bat+ and Bat- terminals to that point at which the voltage is to be sensed.
ADJUSTMENT:
The factory setting for the Load Manager 1H is 12.0 volts (24 v). Field adjustment of the set
point is possible. To do this, remove two screws holding down the cover. Note the position of
the voltage adjustment trimmer R5. This is the 12-volt (24 v) setting. To decrease the voltage
turn counter clockwise. To increase the voltage turn clockwise. Two indicator LED’s are
provided adjacent to the terminal strip. When the green LED is lit, the voltage sensed is
normal. When the red LED is lit, the voltage is below the set point. The voltage detector can
be tested by gradually lowering the system voltage while simultaneously measuring the voltage applied to the input terminals with a precise voltmeter and noting the voltage at which the
red LED turns “ON”.
The 091-98-xx Load Manager 1H contains an adjustable high hysteresis feature. With the
normal trip point set to 12.0 volts (24.00 volts), the hysteresis circuit maintains the relay energized until the voltage increases above 13.45 volts. This assures that the loads being controlled are not energized until the sensed voltage reaches 13.45 volts. This limits the ON/OFF
cycling of the load. The hysteresis may be adjusted using trimmer R15. Turning R15 CCW
will decrease the hysteresis while turning CW will increase. Unless absolutely necessary it is
recommended that the hysteresis remain at the factory setting.
SPECIFICATIONS:
g
Model 091-96-12 091-96-24
Input voltage 10 to 15 volts D.C. 20 to 30 volts D.C.
Input amps, r e lay off 0.02 Amps 0.015 Amps
Input amps, r e lay on 0.1 Amps 0.05 Amps
Relay contacts, amps 30Amps 30 Amps
Case non-weatherproof non-weatherproof
ht 4 ounces 4 ounces
Wei
5.10
4,50
3/16" DIA.
2.95
1.55
OUTLINE DRAWING
To Load will be
energized when
voltage sensed goes
below set-point.
N.C.
N.O.
Input
Fuse
C
To Voltage
Sense Point
Figure 1, Load Manager 1 Installation
Voltage
Trimmer
Hysteresis
Adjustment
11.8 volts
Figure 2, Voltage Adjustment
INSTALLATION RECORD & WARRANTY
Date Installed
Installed By
Vehicle Identification
Vehicle Owner
WARRANTY
All products of Kussmaul Electronics Company Inc. are warranted to be
free of defects of material or workmanship. Liability is limited to repairing or
replacing at our factory, without charge, any material or defects which
become apparent in normal use within 3 years from the date the equipment
was shipped. Equipment is to be returned, shipping charges prepaid and will
be returned, after repair, shipping charges paid.
Kussmaul Electronics Company, Inc. shall have no liability for damages
of any kind to associated equipment arising from the installation and /or use
of the Kussmaul Electronics Company, Inc. products. The purchaser, by the
acceptance of the equipment, assumes all liability for any damages which
may result from its installation, use or misuse, by the purchaser, his or its
employees or others.
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