Micro
ARE-M Series 24V Chargers, Single Phase
Setup and Operation
PM990-1070-24, Issue 12
4-9
4.3.4.1
System Setpoints, System Alarms, and Summary Alarm
The System Setpoints, System Alarms, and Summary Alarm menu selections, shown in Figure 4-4, are
used to change set point voltages and currents, enable and disable system and summary alarms, set alarm
delays, and adjust other parameter values. Guidelines for establishing values for some of these parameters
are provided immediately below. Following the guidelines is a procedure for accessing and setting
parameter values.
The adjustment range of system Setpoints will vary with charger voltage and current capacity. See
Section 1.3 Specification for additional information.
For systems with blocking diodes, the Float and Equalize voltage should be set about 0.7 volts above the
desired battery voltage to compensate for the diode voltage drop. This offset should be adjusted to obtain
the desired output voltage for each installation.
Guidelines
Float and Equalize Voltages
Table 4-2 shows typical float and equalize voltages on a per cell basis for several types of batteries.
CAUTION
Refer to the battery manufacturer’s data sheet for
the float and equalization setpoints that best fit your
application and battery type.
Do not set either float voltage or equalize voltage
while the charger is operating in the current-limit
mode.
Disable battery temperature compensation (see
Section 4.3.4.2) before setting the float voltage.
ATTENTION
Referez-vous à la fiche technique du fabricant de la
batterie pour la tension d’entretien et d'égalisation
qui correspondent le mieux à votre application et
du type de batterie.
Ne pas régler la tension d'entretien ou d’égalisation
lors que le chargeur fonctionne en mode limite de
courant.
Désactiver la compensation de température de la
batterie (voir la section 4.3.4.2) avant de régler la
tension d’entretien.
TABLE 4-2 TYPICAL FLOAT/EQUALIZE VOLTAGES
Battery Type
Float
Equalize
Lead Antimony
(1.210 Specific gravity)
Lead Calcium
(1.210 Specific gravity)
Nickel Cadmium
Nickel Iron
Lead-Acid, Valve-
Regulated (Sealed)
(1.300 Specified gravity)
(1.290 Specified gravity)
(1.245 Specified gravity
2.15 – 2.17
2.17 – 2.25
1.43
1.50 – 1.55
2.25 – 2.30
2.25 – 2.30
2.17 – 2.22
2.33
2.33
1.55
1.60 – 1.65
**
**
**
* Equalize charge is required only if cells have experienced a discharge.
** Additional equalize charging is not recommended after initial equalization.
Consult battery manufacturer for particular recommendations.
