T (°C)
0
+5
+10
+15
+20
+25
+30
+35
+40
+45
+50
All other types of
accumulators
T (°C)
0
+5
+10
+15
+20
+25
+30
+35
+40
+45
+50
Sonnenschein accum.
A500 series
(Condition on delivery)
Functional Description
(continued)
Switching off the power supply
If the accumulator voltage drops
below 10.5 V
during
accumulator operation, the power supply to the control panel
and the external users is switched off (switch-off relay).
This avoids unforeseeable reactions from the control panel on
the one hand, and protects the accumulator from deep
discharging on the other.
A "!U<" signal is given before switch off (See below for
description).
Collective faults:
The messages are transmitted via the outputs
- "Fault" (ST1/3), HIGH active and
- "Fault" (ST1/2), LOW active.
The following
fault causes
are possible:
Mains / ext. user / charger controller defective /
accum. defective or missing / SE input
The type of fault can be determined by the LEDs on the
power supply PCB.
With the DIP switch S1 certain fault causes can be switched
to the collective fault output (see Chapter 7 "Connection Dia-
gram").
Fault U_ext.
(ST1/7), output, LOW active.
This output is active when there is a fault in the user outputs.
Fault SE
(ST1/1), input, LOW active.
For connecting "Fault" outputs of additional emergency power
supplies (cascading).
Mains
(ST1/6), output, HIGH active.
This output is active during power on.
!U<:
(ST1/8), output, LOW active.
Switch-off warning
This output warns of the impending switch-off of the power
supply.
The output is set when the accum. voltage drops
below 10.8 V
.
A corresponding message can be transmitted e.g. via an
AWUG.
U_bat <10.5 V
(ST3/2), output, HIGH active.
This output is transmitted when the power supply (U_bat
<10.5 V) is switched off.
TEST
(ST3/1), input, LOW active.
This input allows a function test of the output U_bat <10.5 V
(ST3/2) by applying a 0 V potential. LD3 must light up.
Attention
It only is permitted to switch the input "Test" to the
0 V potential.
Do not apply a HIGH potential.
RESET key
For the initial start-up procedure, the mains voltage must
be available so that the switch-off relay is energized and
the voltage is connected to the power supply output.
The reset key is necessary, when the power supply unit requires
operating without mains (e.g. for test purposes).
The reset key is used for energizing the switch-off relay.
5.
Set charge terminating voltage
1. The power supply must have reached operating temper-
ature.
For this purpose it must be operated for at least two hours
at rated load and with closed housing.
2. Connect a charged accumulator.
A not completely charged accumulator leads to a miss-
alignment.
3. Adjust the voltage at the accumulator terminals using the
potentiometer PO4 according to the ambient temperature
at the accumulator as per the following table.
Please take note of the type of accumulator.
ATTENTION:
Only alter the charge terminating voltage:
1. After measuring the exact temperature and
2. When the voltage deviates >200 mV from the set value as
per following table.
6.
External NTC thermistor resistor
Item no. 010693
When using an external NTC thermistor resistor, the NTC1 on
the PCB must be removed (nip off).
The external NTC should be fixed to the accumulator in a
suitable manner (e.g. with double-sided adhesive tape) and
connected by soldering to the pins of ST4.
Note:
Basically, we recommend using an external NTC
thermistor resistor.
If the accumulator is not in the close vicinity of the
NTC1, an external NTC thermistor resistor must be
used.
U (V)
L
14.50
14.30
14.10
13.95
13.80
13.65
13.50
13.40
13.30
13.25
13.20
U (V)
L
14.10
13.95
13.75
13.60
13.50
13.45
13.40
13.35
13.30
13.25
13.20
For installation in compliance with VdS, an
external NTC thermistor resistor must always be
used!
6 Mounting and Connection Instructions Mains/charger unit 12 V DC / 40 Ah