S p e z i a l e l e k t r o n i k G m b H
iseg Spezialelektronik GmbH
Email: [email protected]
Tel ++ 49 (0)351 / 26 996 - 0
Bautzner Landstr. 23
http://www.iseg-hv.de
Fax ++ 49 (0)351 / 26 996 - 21
14
D - 01454 Radeberg / Rossendorf
5.6 Analogue I/O Interface
Attention:
Turn off the device with mains switch POWER before connecting/disconnecting
the interface cable.
Attention:
All control inputs and outputs are indirect coupled to the HV-OUT.
All control inputs and outputs are available at the male D-SUB-9 connector on the rear side of the unit
according to the following table.
Analogue I/O with male SUB-D-9 connector
Pin 1 / 6 @GND
Ground
Pin 2
V
I-MON
Current monitor
Pin 3
INHIBIT TTL level / Input
Low
=
active
:
⇒
V
OUT
= 0
High
/
offen
:
⇒
V
OUT
according set values
Pin 4
V
I-SET
Current control
Pin 5
Cmode TTL level / Output
Low
= Current control (CC),
High
= Voltage control (CV)
reaction time < 100 ms
Pin 7
V
V-MON
Voltage monitor
Pin 8
V
V-SET
Voltage control
Pin 9
V
REF
Internal reference voltage
V
REF
= 5 V / 1 mA
Operation with analogue I/O
You can choose control with the analogue interface “AIF” in the menu „F07 Set Interfce“ and then
switch push button “LOCAL” in order to switch to analogue remote control, the yellow LED “REM” is
lighting now (exception see “Auto AIF”).
By pushing LOCAL again the mode runs back to menu and „HV-OFF”. To use the unit in LOCAL
mode again you must choose an other interface in the menu „F07 Set Interfce” (e.g. RS-232).
The generation of high voltage will start with pushing “HV ON” (exception see “Auto AIF”) according
to the analogue set values and will stop with pushing “HV OFF” or with external INHIBIT (LOW = ac-
tive).
The reaction to the active INHIBIT signal is according to the setting of the KILL function:
•
KILL disable: generation of HV will be stopped, with Low to High on INHIBIT the output will be
ramp to the chosen voltage/current with the programmed ramp speed!
•
KILL enable: generation of HV will be stopped, with Low to High on INHIBIT the output will be
volt-free. The generation of high voltage will start with pushing “HV ON” only
(exception see “Auto AIF”).
Automatic function “Auto AIF“
If the control mode is chosen with analogue interface “AIF” in the menu „F07 Set Interfce“ you can set
the automatic function “Auto AIF” in the menu „F06 Auto AIF“ to “ON”.
Now it is able to start the generation of HV according to the set values with the INHIBIT signal Low to
High, without pushing “HV ON”!
Caution!
The high voltage generation will start with each Low to High Signal on INHIBIT!
If you choose an other interface in the menu „F07 Set Interfce“, the function “Auto AIF” will be set to
“OFF” automatically. If you will use „Auto AIF“ again, you must choose “AIF” in the menu „F07 Set
Interfce“ before and than set the automatic function “Auto AIF” in the menu „F06 Auto AIF“ to “ON”.
