Ransburg MicroPak Controller A11789 - Manual (Page 14)

DESCRIPTION OF TABLE
1 INTERLOCK AND I/O
TERMINALS
Input Terminals
kV Setpoint (0-10VDC)
0 to 10 VDC remote analog signal input that
controls applicator output from 0 to 100 kV DC
when high voltage is enabled. This input is active
when the MicroPak local/remote switch is in the
remote position. Otherwise control is from the
kV adjust knob on the front of the MicroPak. In
either mode, the kV setpoint can be viewed by
pushing and holding the View/Change Setpoint
switch (see Figure 8) on the front of the Micro-
Pak.
Voltage Control Over-Current
Setpoint (0-10VDC)
0 to 10VDC remote analog signal input that sets
the over-current point when high voltage is en-
abled. If the current goes above this setpoint an
overcurrent fault will occur. This input is active
when the MicroPak local/remote switch is in the
remote position and dipswitch SW3-1 on the
MicroPak process board (see Figure 6A) is set
to the ON position. The range of the over-cur-
rent setpoint in this mode is 0 to 10VDC. The
microamps are limited to 240 for voltage above
10VDC.
For example: 3.30VDC = 85 microamps
If the local/remote switch is in the remote position
and dipswitch SW3-1 is OFF, then potentiometer
R21 on the top of the MicroPak process board
Figure 5: Stripping of I/O Cable(s)
(see Figure 6A) will control the over-current set-
point. This mode is convenient if it is desired to
supply an analog input signal for the kV setpoint
but not for the over-current setpoint.
Finally, if the local/remote switch is in the local
position, the over-current setpoint is controlled
by the μA adjust knob on the front of the Micro-
Pak.
If any of the modes, the over-current setpoint
can be viewed by pushing and holding the View/
Change Setpoint switch (see Figure 8) on the
front of the MicroPak.
CURRENT CONTROL
Over-Current Setpoint (90-10VDC)
0 to 10VDC remote analog signal input that sets
the desired current. The current control unit will
limit the maximum current to this setpoint. If the
current goes over this setpoint, then a fault will
occur.
If the voltage setpoint is set low, then the unit
will only allow enough current to achieve the
kV setpoint. It may be simpler to think of the kV
setpoint as the controlling variable when the kV
setpoint is achieved before the current setpoint.
The range of current is 0 to 240 microamps with
0 to 10VDC analog input.
For example: 10VDC = 240 microamps
3.30VDC = 85 microamps
High Voltage Reset (24VDC)
24VDC remote input signal that allows remote
reset of fault conditions. When a fault occurs, a
momentary supply of 24VDC to this terminal will
reset the fault. Faults can also be reset by mov-
ing the kV ON/OFF toggle switch on the front of
the MicroPak to the OFF position and back to
the ON position. This input can also be used to
remove the MicroPak from ready mode.
High Voltage On (24VDC)
Remote input signal that enables high voltage.
When 24VDC is supplied to this terminal, high
voltage will be enabled. This input mode is active
in either local or remote mode when dipswitch
MicroPak Controller - Installation
12
Ransburg
CP-06-01.1