Voltech AT5600, Руководство пользователя

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C H A P T E R 1 0 – S P E C I F I C A T I O N S
AT5600 User Manual 98-119 issue 14
Page 245
10.3.5. Safety Interlock
Description of the Safety Interlock
There are 3 active circuits on the safety interlock connector. Two are digital
control circuits, and the third is a high voltage analog circuit.
ALL three circuits must be correctly made before the AT5600 will run any tests.
Once the Safety interlock has been connected, the AT5600 can produce
voltages that should be considered lethal.
9-pin female D-type connector
Pin Signal name Pin Signal name
1 No connection 6 0V
2 +12V 7 i/p HVIP
3 o/p HVOP 8 No connection
4 No connection 9 i/p LB1
5 i/p !LB0
HVOP and HVIP (Pins 3 and 7)
The HVOP is an analog voltage output which can be as high as 400V.
The HVIP is a corresponding input voltage. All the high voltage test
signals used by the AT5600 are derived from this input.
In the ‘safe’ condition, HVOP is linked back into HVIP.
LB0 and LB1 (Pins 5 and 9)
These are the two digital control signals, when i n the ‘safe’ condition, !LB0
is linked to 0V, and LB1 is driven to a voltage b4.5 V and +5V via
a series 6k8 ohm, 0.4 W resistor.
When the safety interlock is broken, at least one of these signals must
switch at least 16 ms before switching out the HVOP/HVIP signals.
Safety Notice
See Section 6. of this manual for Important Safety Information.