INSTRUCTION MANUAL
EZA11K Series
TDK-Lambda
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9-4. Operating Status Indicator
The Front Panel of this converter has LEDs (3 pcs) as operating status indicator.
The LED arrangement is shown below together with the conditions when these LEDs light up or turn off.
When there is failure inside the converter at all the LEDs light up.
At no load conditions, REG/GEN LED blinks.
Pin #13 is reserved, do not connect.
10. System Interface
This converter is provided with one external signal connector and 2 serial interface connectors as an interface to
the host devices.
10-1. External Signal Connector
(CN)
The external signal connector layout as seen from the rear panel is shown below.
10-1-1.
Alarm Signal, ALM
Alarm Signal ALM is outputted (Pin 1 becomes open) when Alarm occurs. (Synchronized with Alarm Indicator
LED)
10-1-2.
Converter Good Operation Signal, PG
Converter Good Operation Signal PG is outputted (Pin 3 becomes short to SG) during Converter Operation (Power
Conversion).
10-1-3.
Converter Operation Stop Command, STOP
By shorting this signal to SG, the converter can be forcibly stopped.
(STOP prioritizes interface command)
This signal is categorized as a heavy alarm. When this command is detected the Alarm Signal “ALM” is outputted.
10-1-4.
Converter Operation Start Command, RUN
By shorting this signal to SG, the converter will commence power conversion according to the pre-set DIP Switch
Operation Mode.
11/24
REG
GEN
ALM
Light up at Regeneration operating
Light up at Generation operating
Light up at Alarm
Pin #
Signal
I/O
Note
1
ALM
O
Alarm
2
SG
-
Signal Ground
3
PG
O
Converter Operation Good Signal
4
SG
-
Signal Ground
5
STOP
I
Converter Operation Stop Command
6
SG
-
Signal Ground
7
RUN
I
Converter Operation Start Command
8
SG
-
Signal Ground
9
CHRG
I
Charge, Discharge Conversion Command
10
SG
-
Signal Ground
11
ALMCLR
I
Alarm Clear
12
SG
-
Signal Ground
13
-
-
Reserved
14
SG
-
Signal Ground
15
AUX5V
O
Service Power Supply
16
24Vi
I
Power Input for parameter setting
