NewMar DCV User manual

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Fax: [phone]
E-Mail: [email protected]
P.O. Box 1306
Newport Beach,
California 92663
Introduction
The DCV Battery Voltmeter provides accurate low cost digital
instruments for 3 banks of batteries between 9.5 and 33 Volts.
The instrument displays battery voltage for any one of three
banks. You can set Low and High voltage alarms for each
bank independently and the DCV continuously monitors the
voltage of each bank at all times. When activated, the built-in
85 dB alarm will sound and the display will flash. Five levels
of backlighting can be selected and all set-up, calibration
constants and alarm values are saved to non-volatile memory.
You can select to have either an external alarm output or
standard NMEA 0183 compatible data alarm output. If you
select NMEA 0183, the voltage of each battery is output once
per second as 4800 BAUD serial data stream.
Installation
Before starting the installation, please read this entire
section first. The instrument may be installed in a bulkhead
or in NEWMAR's Single or Dual Universal Meter Panel
Blanks (contact factory). Remove the rear bracket, attach
wiring as explained in the following section, then reassemble
and install as shown in the diagram below. Finger tighten
the nuts that secure the bracket - do not use tools. (You may
use Lock-Tite to keep the nuts from vibrating loose.) Be sure
to slide the bulkhead gasket over the instrument body before
you install the instrument.
Drill a 2-1/8" (55mm) mounting hole (or use NEWMAR's
Single or Dual Universal Meter Panel Blanks) as shown in
FIGURE 1.
Model: DCV
DC Voltmeter
INSTALLATION/OPERATION MANUAL
FIGURE1
Bring the wires out the mounting hole and make the connec-
tions to the screw terminal on the instrument case as shown
onFIGURE2andFIGURE3.
Note: For proper operation, all three battery inputs MUST
be connected to 9.6 VDC minimum. For installations with
fewer than three battery banks, jumper spare terminals (E)
or (F) to terminal (B).
FIGURE2
(FIGURE3ONREVERSE)
M-02343480
OCT 2010

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Fax: [phone]
E-Mail: [email protected]
P.O. Box 1306
Newport Beach,
California 92663
FIGURE 3
Carefully check all your wiring against that shown in
FIGURES 2 and 3. If everything is wired correctly you can
mount the DCV in the instrument hole. Be sure the bulkhead
gasket is in place and use only finger tension to tighten the
bracket hold-down nuts. Do not overtighten the bracket or
you may damage the case - do not use tools to tighten the
nuts.
Operation
Key Functions
The keys are used to select what to
display, backlights, calibrate volts/amps, turn alarms on/off,
and set alarms values. New information is automatically
saved to memory.
Turning Alarms ON/OFF
Press the key 1/2 second to turn alarms ON. The Battery
(1, 2, or 3) icon will blink. Press the key 1/2 second to
turn the alarms OFF.
Backlight Intensity
Press the key 1/2 second to adjust the backlight level for
night-time viewing. Each time you press the key 1/2
second, the level will get brighter 1, 2, 3, 4, OFF, 1, 2...etc.
Screw terminal pin (D) must be switched on for the backlights
to work.
Display Volts for Battery 1, 2, or 3
Quick press one of the keys to select
Battery 1, 2, or 3.
Setting High Volts Alarm
Select the battery (1, 2, or 3) for which you wish to set the
High Volts Alarm. Press and hold the key for ten (10)
seconds. You will hear a beep and the High Volts alarm value
for that battery will be displayed. Use the and keys
to set the desired alarm value. Press the key to save the
High Volts Alam value to memory.
Setting Low Volts Alarm
Select the battery (1, 2, or 3) for which you wish to set the
Low Volts Alarm. Press and hold the key for ten (10)
seconds. You will hear a beep and the Low Volts alarm value
for that battery will be displayed. Use the and keys
to set the desired alarm value. Press the key to save the
new alarm value.
Calibrating the Instrument
The DCV is calibrated at time of manufacture for 12V battery
banks, but can be calibrated at any time by using the front
panel keys. Battery 1, 2, or 3 can be independently calibrated.
To calibrate the voltmeter, press and hold down one of the
keys for three seconds (to calibrate battery 1, 2, or 3) while
applying power to the instrument. Use the and keys
to make the displayed value read correctly. Press the key
to save the calibration data to memory.
Selecting NMEA 0183 or External Alarm Output
The DCV comes factory pre-set to output NMEA 0183
compatible serial data. If you do not need this feature or
would rather have an external alarm output on screw terminal
(C), you can do so as follows.
While viewing battery voltage (any battery), press and hold
down both the and keys for 10 seconds (until you
hear a long beep). This operation switches the output mode
between NMEA 1083 and External Alarm. The new output
mode is automatically saved to memory.
When the external alarm output is activated, a 5V signal (10
mA Max.) is output on screw terminal (C).
12 3
12 3
1 2 3

Phone: [phone]
Fax: [phone]
E-Mail: [email protected]
P.O. Box 1306
Newport Beach,
California 92663
Warnings and Notes
1) The DCV receives power from the connection to Battery 1
(screw terminal B), but requires that the Battery 2 and
Battery 3 inputs (screw terminals E and F) also be
connected to at least 9.5 VDC for proper operation. For
installations with fewer than three battery banks, jumper the
spare terminals to terminal B (or connect them directly to
Battery 1).
2) Screw terminal (D) must be connected to 9.5 VDC minimum
in order for the backlights to turn ON. If screw terminal (D) is
not connected to at least 9.5 VDC the backlights will turn
OFF. This provides remote control of the backlights.
NMEA 0183 Sentences
The DCV outputs a 4800 BAUD serial data stream of battery
volts for battery 1, 2, or 3 once per second. The NMEA
sentence identifies the instrument (V-30) and the battery (1, 2,
or 3).
Volts:$IIXDR,U,xx.x,V,V301,*CS(forbattery1)
Volts:$IIXDR,U,xx.x,V,V302,*CS(forbattery2)
Volts:$IIXDR,U,xx.x,V,V303,*CS(forbattery3)
*CS = Check Sum
Specifications
Power supply: 9.5to 33.0 VDC, .018 ampsnominal
Operating temperature: 32 to 122°F ( 0 to 50°C)
Size: 2.5" dia X 4.1" deep (61mm x 104 mm).
Accuracy: Better than +/- 0.1 VDC front panel
adjustable independently for each bank.
Ranges: Volts 1, 2, & 3 -9.5to 33.0 VDC
Alarms: Independent High and Low Voltage Alarms for each
Battery
Display: 4 digit LCD, 5 levels of backlighting.
Output: 4800 BAUD Serial Data; $IIDR output once per
second for each bank OR external alarm output (user
selectable).