Det-Tronics Eagle Quantum Premier - Measuring Battery Voltage and Charging Current

95-8533
3-25
18.2
MEASURING BATTERY VOLTAGE AND
CHARGING CURRENT
Measure the battery voltage at terminals 3 and
4 of terminal block J2. See Figure 3-16 and
3-20.
To measure the battery charging current,
connect a digital voltmeter to terminals 1 and
2 of terminal block J2. The voltmeter will read
1 millivolt (0.001 volt) for each 2 amperes of
current.
Current in Amperes = Meter reading in millivolts
x 2
Example: A reading of 50 millivolts indicates a
charging current of 100 amperes.
+
J1: POWER AND LON WIRING LON ADDRESS SWITCHES J3: AC INPUT
TERMINAL NO. 1
YELLOW LED
RED LED
GREEN LED
TERMINAL NO. 1
TERMINAL "B"
TERMINAL "C"
J2: BATTERY TEST POINTS
TERMINAL NO. 1
SWITCH NO. 1
1
1
12
3
4
1
C1949
ALARM LEVEL 1 2 3 4
200 mA O O – –
400 mA X O – –
800 mA O X – –
2 AMP X X – –
X = CLOSED
O = OPEN
ALARM CURRENT LEVEL SWITCH SETTINGS
TERMINAL J2-1 TO
TERMINAL B
TERMINAL J2-2 TO
TERMINAL C
POWER SUPPLY MONITOR
PC BOARD ASSEMBLY
J2
NOTE: J2 TERMINALS 3 AND 4 ARE CONNECTED TO J1 TERMINALS 7 AND 8 INTERNALLY
ON THE PC BOARD. J1 TERMINALS 7 AND 8 ARE ALSO CONNECTED TO THE
BATTERY CIRCUIT BREAKER VIA POWER DIST CKT.
+
–
0.0005 OHM SHUNT
Figure 3-16—Power Supply Monitor Terminal and Switch Location
1
2
3
4
5
6
7
8
9
10
A1947
11
12
SHIELD
SHIELD
SHIELD
SHIELD
A
B
A
B
–
+
–
+
COM 2
24 VDC
COM 1
Figure 3-17—J1: Power and LON Wiring Terminal
A1950
1
2
3
4
AC INPUT 120 / 240 VAC
AC INPUT 120 / 240 VAC
NOT USED
NOT USED
Figure 3-18—J3: AC Input Terminal