PSI System Controls and Diagnostics
I128r5 User Manual
I128r5_UM_190923 Page 115 of 123
External load resistance too
low.
Voltage recovers if setting is
reduced.
Do not attempt to draw more
than 1 watt from each high
voltage supply. Higher power
modules are available to
special order.
High voltage not at setpoint
A high compliance source
such as a charged particle
beam is driving the HV
electrode.
Monitor value recovers if
C400 disconnected from the
external circuit.
Change geometry to reduce
beam strike.
Cannot set high voltage
Trying to set above the
maximum allowed value soft
limit.
Sets OK if a lower value is
chosen.
If allowed, increase the
maximum allowed value.
Unable to communicate via
Ethernet
Incorrect IP address for I128r5
or host (not in the same
subdomain).
Check settings of I128r5 host
PC.
Use consistent IP addresses.
Messages being blocked by
anti virus software.
Disable anti-virus software
Set up allowed channels for
I128r5 messages.
Unexpected changes to I128r5
state
Another host is
communicating with the
I128r5.
Change IP address.
Use a direct cable connection
instead of a network.
Set up IP addresses and subnet
masks to prevent conflicts.
Communications interruptions Other processes on PC host
interfering with comms ports.
Use a dedicated PC with
simple configuration and
minimum number of processes
running.
