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7.4 Control interfaces
Description
Clear to begin charging
"Charger ON"
Input from ignition key to dif-
ferentiate between a power cut
and a normal switch-off (e.g.
when the vehicle is driven)
Own relative ground for ZND
Analogue input for charging
power
"Power control"
Analogue inputs for two bat-
tery temperature sensors
Control inputs
(programmable inputs)
Output "Mains connected"
Output "Fault"
4 programmable outputs
Relative ground
7.5 RS-232 computer interface
The NLG-4 is equipped with an RS-232 interface for programming and for reading operating data during the
charging cycle.
NLG4 C
Pin Nr.
Condition
18pol
Clipper
HTP
11
Inherent safety; no semiconduc-
tors in "clear to begin charging"
circuit
ZND
9
1-bit memory information
("Vehicle has been driven"):
Must remain effective until next
charging cycle begins
ZN0
10
Permits use of an ignition switch
to ground
PWR
6
Potentiometer can be directly
connected
TS1
2
For direct connection of the two
TS2
4
temperature sensors
IN1
7
2 logic inputs.
IN2
8
Can be programmed as desired.
HVS
12
Current-limited output
Permits operation of the CON,
ST1, ST2 control inputs without
external power
STO
13
Current-limited output
AUS1
14
Current-limited output
AUS2
15
AUS3
16
AUS4
17
GND
1
3
5
18
Value / range
Relay winding
12V, 30mA
Relay winding
12V, 30mA
0...5V or
0...5 k Ω
NTC 33 k Ω at 25 ° C
Active high,
trigger threshold 2.5V,
-13...40V
12V, max. 60mA
12V, max. 30mA
12V, max. 30mA
28
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