bonitron M3528M4, Customer Reference Manual

Page: 15 / 24

User’s Manual
15
4.
O
PERATION
4.1.
F
UNCTIONAL
D
ESCRIPTION
The M3528M4 Module monitors nine or ten (0-15VDC batteries) voltages connected to the
input terminals TB2 (2 - 12). The module
monitors each battery’s voltage, and indicates if
the voltage is outside a predefined voltage range. Individual batteries are indicated, along
with the specific fault. There are remote monitoring outputs for connection to a PLC or other
supervisory system, as well as relay outputs to allow for control functions of ancillary
equipment. The unit has a ribbon connector that can be used to drive the Bonitron M3528D4
display panel for remote mounting of indicators.
4.2.
F
EATURES
4.2.1.
O
PERATION
4.2.1.1.
U
NDERVOLTAGE
When one or more of the batteries voltages fall below the undervoltage set
point for 12 seconds, undervoltage output relay opens and the status LED
blinks (see Blink Pattern Table 4-1), the undervoltage signal goes low and one
or more of the display LEDs turn on indicating which battery falls under the
undervoltage setpoint. The fault will latch until the batteries voltages rise
above the undervoltage set point and the user pushes the reset button on the
front panel. Then the undervoltage output relay closes and the status LED
turns on. An undervoltage is indicated by an individual battery terminal
voltage of 9V.
4.2.1.2.
O
VERVOLTAGE
When one or more of the batteries voltages rise above the overvoltage
setpoint, the status output relays open, the Status LED blinks (see Blink
Pattern Table 4-1), the Overvoltage signal goes low, and one or more of the
display LEDs turn on indicating which battery has risen above the overvoltage
setpoint. The Fault will latch until the batteries voltages fall under the
undervoltage set point and the user pushes the reset button on the front panel.
Then the status output relay closes and the status LED turns on. An
Overvoltage is indicated by an individual battery terminal voltage of 15.2V
±0.1V.
4.2.1.3.
O
VERVOLTAGE AND
U
NDERVOLTAGE
When one of the battery string voltages rises above the 15.2V ±0.1V and
another battery voltage falls below 9V, status relays and the undervoltage
relay open. The Status LED blinks as an Overvoltage Fault (see Table 4-1).
4.2.1.4.
B
LOWN
F
USE
D
ETECTION
When the fuse is blown the Status LED blinks (see Blink Pattern Table 4-1),
the blown fuse signal will go low and the status output relays open. The status
LED will keep blinking until the user changes the fuse and pushes the reset
button on the front panel.
4.2.1.5.
O
VER
T
EMPERATURE
When temperature sensor reaches a setpoint the status LED blinks (see Blink
Pattern Table 4-1), the Over Temperature signal will go low and the Status