8
Installation
•
Only qualified personnel is allowed to install and perform the connection of PCA-20
(PCA-25) into customer’s system
•
PCA-20 (PCA-25) is intended only for capacitor charging applications. The module
should only be used inside the medical equipment, which has means to isolate its circuits
electrically from the supply mains on all poles simultaneously
•
Use four M4 mounting holes on the bottom side of PCA-20 (PCA-25) for fixation of the
module in your system. Refer to the
Dimensional drawing
section for their location.
Note: max. tightening depth of mounting screws should not exceed 4mm
•
Connect the module to your system protective ground using provided M4 grounding
thread.
Note: max. screw depth should not exceed 6mm
•
Connect INPUT, HV OUTPUT and INTERFACE cables according to their functions
•
Since module is air cooled, at least 50mm of free space should be provided both at the
suction and pressure sides of PCA-20 (PCA-25)
Operations
1.
Disable
the high voltage output using
INHIBIT
signal (
PIN7
of
INTERFACE
)
2.
Set the desired output voltage in working range (0V-V
MAX
) by applying a DC voltage
to the
Voltage Program
(
PIN3
of
INTERFACE
)
3.
Apply power to the module, wait 2-5s until module starts
4.
Enable
the high voltage output (
PIN7
of
INTERFACE
)
5.
After operations disable the high voltage output,
then disconnect module from the mains
Faults
Fault
Cause of the fault
Troubleshooting
Overvoltage (Pin 19, pin 14)
Voltage on the load exceeds
110% of V
MAX
level
The fault signal will disappear after
elimination of its cause and resetting
INHIBIT signal (inhibit and enable the
signal referring to the INTERFACE
description)
Short-circuit (Pin 19)
HV OUTPUT is enabled, but
voltage doesn’t increase in
predefined time (1.5-2.0s)
The fault signal will disappear after
elimination of its cause and resetting
INHIBIT signal (inhibit and enable the
signal referring to the INTERFACE
description)
Open-circuit (Pin 19)
There is no capacitive load
connected to HV OUTPUT
The fault signal will disappear after
elimination of its cause and resetting
(turning off and on) mains supply of the
charger
Overtemp (Pin 13)
Temperature of internal elements
exceeds the preset limit (approx.
80°C)
The fault signal will disappear automatically
after the temperature decreases below the
limit (approx. 75°C)
Mains interruption (Pin 13)
Mains has been interrupted (for
the time longer than ~1 period)
The fault signal will disappear after resetting
INHIBIT signal
Start-up (Pin 13)
PCA has been just connected to
the mains
Once initial start-up
sequence is performed
completely
, i.e. in 2-5s, t
he signal is
automatically removed
Содержание PCA-20
Страница 11: ...11 Dimensional drawing...
