Caution – Kussmaul Electronics 091-60A User Manual
Page 4
LOAD MANAGER SETTINGS
The standard setting on Load Manager Mark II may not be optimum for all applications. The
Configuration Switch , S6, sets the initial time delay and the initial shed voltage for the unit. On the
Configuration Switch, levers 1-3 are used for time settings. Levers 5 and 6 are for voltage
settings.
To prevent false voltage readings, the Load Manger Mark II, delays the shedding or adding of
loads. The initial delay time is factory set for four seconds. By adjusting levers 1-3 on the
Configuration Switch, the user may vary the initial time delay from 2 to 16 seconds. Figure 1 below
indicates how to alter the initial delay time.
Subsequent time delays for additional load shedding is factory set for 2 seconds and is not
adjustable.
Load Reduce will start at the Initial Shed Voltage. The Factory Setting, for the Initial Shed Voltage,
is 12.3VDC. For the first load to go off, the voltage must be 12.3 VDC or lower for the duration of
the time delay. Recovery, that is reapplication of a load will not occur until the voltage is .2 VDC
higher than the shed voltage. A time delay prevents the instantaneous operation of the output
relay. After shedding the first load the Load Manager waits 2 seconds before making a decision
to shed more loads. If the sensed voltage is .2 volts less than that at the previous shed point and
maintains this lower voltage for 2 seconds, the next load will be shed. This continues until
sufficient loads are shed so that there is no further decrease in sensed voltage. Figure 2 below
indicates the switch settings required to vary the Initial Shed Voltage. Loads are reapplied when
the voltage rises and is maintained for a suitable time.
Lever 1
Lever 2
Lever 3
Time Delay
on
on
on
2±.5 sec
off
on
on
4±.5 sec
on
off
on
6±.5 sec
off
off
on
8±.5 sec
on
on
off
10±.5 sec
off
on
off
12±.5 sec
on
off
off
14±.5 sec
off
off
off
16±.5 sec
Changes to Configuration Switch, S6, will only take effect during power up. Remove power from
pin one of Load Manager and reapply to change the setting on the Load Manger Mark II.
Switch 4 Switch 5
Initial Shed Voltage
on
on
12.30±.1
off
on
12.15±.1
on off
12.00±.1
off
off
11.85±.1
Factory Setting
Figure 1
Configuration Switch, S6, InitialTime Delay Settings
Figure 2
Configuration Switch S6, Threshold Voltage Setting
Factory Setting
CAUTION