ICT200-LVD LOW VOLTAGE DISCONNECT SWITCH
This automatic LVD switch is designed to protect your battery
from excessive discharge that may cause permanent
degradation of the cells. The ICT200-LVD disconnect switch may
be wired in series with the battery positive or negative lead for
use with any dc grounding configuration.
The intelligent back-lit LCD display makes set up simple.
Selecting your nominal battery voltage at first power up will
automatically set the disconnect and reconnect voltages to
standard levels for the battery voltage chosen. Custom voltage
thresholds may be set for specialized applications, and the
internal contactor may be manually set to an open or closed
state if required. The display also shows the battery voltage and
the current drawn by the load, along with the operating state of
the LVD and any alarm conditions.
CONNECTION DIAGRAM
WARNINGS
Risk of personal injury or damage to equipment and property!
Always observe the following:
Use an appropriate over-current protection device in line
with the battery sense connection, and in line with the
main load battery connection
Use a disconnect switch or circuit breaker in series with the
main load battery connection, for installation and service
Use wire and connectors rated for the maximum load
current, and size of fuse or circuit breaker. Tighten all
connections
Ensure load current does not exceed max rating of unit
INSTALLATION
Mount the unit in a standard 19” equipment rack using the
front panel mounting ears (included).
With the main battery service disconnect switch open; connect
the LVD LOAD and BATTERY terminals using appropriately sized
wire, disconnect, and an over-current protection device rated
for the application. Bond the chassis to ground using the ground
stud located on the back panel.
Installation
(continued)
Connect the alarm output contacts (if desired) to an external
monitoring system, using the REMOTE connector (P10)
terminals 1, 2, and 3 as shown in the REMOTE table, below. Use
the mating 7 pin REMOTE connector plug (included).
Connect the battery sense lines using 22 AWG or larger wire
and an over current protection device (5A fuse or circuit
breaker) to the battery terminals. These lines provide power to
the unit, and allow the control circuitry to sense the battery
voltage. The internal display should then power up, allowing the
nominal battery voltage to be set (see Initial Set Up section).
REMOTE Connector P10: (pins 4, 5 not used)
CONTROL PANEL MENUS
FRONT PANEL CONTROL
Use the front panel scroll knob, ENTER, and BACK buttons to
navigate the interface menus and set up the following
parameters:
Nominal battery SYSTEM VOLTAGE (set to 12/24/48V
to correctly scale factory default LVD points)
Restore to FACTORY SETTINGS (default values, 12V
system, AUTO mode, contactor open)
LVD SETTINGS (set custom disconnect and reconnect
voltage levels, set mode for AUTO disconnect or
MANUAL-OPEN/MANUAL-CLOSED configuration)
SECURITY SETTINGS (set a four digit password and
lock-out timer to prevent unauthorized adjustment of
LVD settings, if desired) (default is no password)
Use the scroll knob to cycle between the top-level menus, press
ENTER to select a menu for adjustment, and then use the scroll
knob to select the parameter for adjustment, press ENTER to
select.
Adjust the selected parameter with the scroll knob; press ENTER
to activate the setting. Use the BACK button to return to a
higher level menu
Pin Number
Name
Note
1
Common
Alarm out common
2
NC
Alarm NC (alarm state)
3
NO
Alarm NO (alarm state)
6
BATT POS
Battery sense Positive
7
BATT NEG
Battery sense Negative
SET SYSTEM VOLTAGE
NOMINAL BATT V:
12V
FACTORY SETTINGS
BATTERY: 13.6V
83A
LVD MODE:
AUTO
DISCONN VOLTAGE:
10.5V
RECONN VOLTAGE:
12.5V
LVD SETTINGS
DISCONN VOLTAGE:
10.5V
RECONN VOLTAGE:
12.5V
LVD MODE:
AUTO
SET SECURITY SETTINGS
PASSWORD
CLEAR PASSWORD
SET LOCKOUT TIMER
SET SYSTEM VOLTAGE
NOMINAL BATT V:
24V
<SCROLL> TO CHANGE
PUSH <ENTER> TO SET
LVD SETTINGS
DISCONN VOLTAGE:
11.2V
<SCROLL> TO CHANGE
PUSH <ENTER> TO SET
ENTER PASSWORD
0***
<SCROLL> TO CHANGE
PUSH <ENTER> TO SET
Press ENTER to
activate setting
after
adjustment
Press ENTER to
activate setting
after adjustment
Press ENTER to
activate setting
after adjustment
Scroll
Scroll
Scroll
Press ENTER to
select desired
parameter to
adjust
Press ENTER to
select desired
parameter
to
adjust
Press ENTER to
select desired
parameter to
adjust
Home Screen
System Voltage Setting
(Nominal)
LVD (min)
LVD (default)
LVD (max)*
Reconnect
(min)*
Reconnect
(default)
Reconnect
(max)
12V (default)
10.5
11.5
12.5
12.0
12.5
13.8
24V
21.0
23.0
25.0
24.0
25.0
27.6
48V
42.0
46.0
50.0
48.0
50.0
55.2
ADJUSTABLE LVD SETTINGS:
*Note: The disconnect voltage setting cannot be set higher than the
reconnect voltage setting, less a 1.0V guard band. Likewise the
reconnect voltage cannot be set lower than the LVD point plus 1.0V.
e.g. for a 12V system with the reconnect V set to 12.6V the LVD set
point cannot exceed 11.6V
