MPE XR III series, Operator'S Manual

Page: 112 / 129

Table 8.1 MODULATION TABLE
FOR LEADLESS REMOTE SENSING
(TYPE 1)
Row
VMOD
(Vdc) Mod
1
2
3 0.0
10.0
9999
0.00
0.20
0.00
Table 8.2 MODULATION TABLE FOR
EMULATION OF A PHOTOVOLTAIC ARRAY (TYPE 0)
Row
VMOD
(Vdc) Mod
Vo
(Vdc)
Io
(Adc)
1
2
3
4
5
6
7
8
9
10
11
12
13
0.000
2.085
3.645
4.690
5.210
5.415
5.730
6.040
6.250
6.460
6.665
6.770
9999
1.000
0.952
0.905
0.857
0.809
0.762
0.714
0.666
0.619
0.571
0.476
0.000
0.000 105
100
95
90
85
80
75
70
65
60
50
0
0.0
10.0
17.5
22.5
25.0
26.0
27.5
29.0
30.0
31.0
32.0
32.5
Note: Set the program voltage to 105 V.
8.4 Battery Charger
Figure 8.3 illustrates a temperature compensated battery charger for applications with lead acid
batteries. Diode D1, placed between the power supply and battery, blocks current from flowing
from the battery to the power supply. This eliminates any loading on the battery when the power
supply is off, but more importantly, prevents the battery from charging the power supply’s output
capacitors. With deployment of diode D1, remote sensing should be applied across the battery
terminals to compensate for the diode drop. By setting the voltage and current to the bulk charge
voltage and maximum charge current, the power supply will initially charge the batteries in
current mode control and then automatically crossover to voltage mode control when the batteries
reach the desired set point. Using remote programming features, the power supply can be
programmed for time dependent, sequential step operation to equalize and float charge the
batteries after bulk charging. Equalization is generally not required for every charge cycle. Table
100