NF HVA4321, Instruction Manual

Page: 61 / 152

4.1 Operation example in constant voltage mode
HVA4321
4-5
e)
Output limiter settings
To limit the output voltage and output current, set the limiter level as required.
Figure4-7. Limiter settings
Voltage limiter
The voltage limiter function can limit the maximum value of the output voltage independently for
positive and negative values in the range from ±5 kV to ±10 kV. For example, the output is sufficient
up to ±8 kV, set the VOLTAGE LIMITER to 8 kV and -8 kV.
When voltage limitation is not required, set it to MAX.
Current limiter
The current limiter function can limit the average value of the output current in the range from 0 mA to
± 10 mA. For example, to limit the output current up to 5 mA, set it to 5 mA.
When current limitation is not required, set it to 10 mA which is turned to the rightmost position.
LIMIT/TRIP
Set the protection mode for activation of the current limiter. When LIMIT is selected, current is limited
to the set current. When TRIP is selected, the input signal is immediately OFF for activation of the
current limiter circuit and the output is 0V.
Select either one as required.
f)
Current monitor mode settings
In total mode, set it to TOTAL CURRENT and in load mode, set it to LOAD CURRENT.
Figure4-8. Current monitor mode settings
TRI P
VOLTAGE(kV)
-5
-10
MAX
5
10
MAX
LI MIT
DC CURRENT( mA)
0 10
LI MITER
CURRENT
SELECT
LOAD
TOTAL