The KILL switch specifies the response on exceeding limits or on the external protection signal at the INHIBIT input as follows:
Switch to the right position:
(ENABLE KILL)
When exceeding I
max
or in the presence of an INHIBIT signal (Low=active) the output voltage will
be shut off permanently without ramp. The output voltage is only restored after switching
HV-ON or KILL or ”
READ STATUS WORD
” and then ”
START VOLTAGE CHANGE
” by DAC
control. If ”Auto start” is active, ”
START VOLTAGE CHANGE
” is not necessary.
Switch to the left position:
(DISABLE KILL)
The output voltage is limited to V
max
, the output current to I
max
respectively; INHIBIT shuts the
output voltage off without ramp, the previous voltage setting will be restored with hard- or
software ramp once INHIBIT no longer being present.
INFORMATION
INFORMATION
If a capacitance is effective at the HV-output or when using a high voltage ramp speed (hardware ramp) under
high loads, then the KILL function may be triggered by the capacitor charging currents. In this case smaller
output voltage change rates (software ramp) should be used or ENABLE KILL should only be selected once the
set voltage is reached at the output.
5 RS232 Interface
5.1. RS232 control mode
The following functionality is provided for the operation of the high voltage units via the serial interface.
Write function:
set voltage; ramp speed; maximal output current (current trip); auto start
Switch function:
output voltage = set voltage, output voltage = 0
Read function:
set voltage; actual output voltage; ramp speed; actual output current; current trip; auto start; hardware
limits current and voltage; status
INFORMATION
INFORMATION
Front panel switches have priority over software control.
EHQ High Voltage Power Supply series | Last changed on: 11.05.2020 |
www.iseg-hv.com
16/46
