REMOTE/AUTOMATED CONTROL 6-1
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Copyright © 2010 by Kaufman & Robinson, Inc., 1306 Blue Spruce Drive, Unit A, Fort Collins, CO 80524
Tel: 970-495-0187, Fax: 970-484-9350, Internet: www.ionsources.com
6 REMOTE/AUTOMATED CONTROL
The Auto controller has a variety of remote control options available. These options
include a female DB-25 analog/digital interface, A DB-37 analog/digital interface
and a DB-9 RS-232 serial interface. Note: The Auto Controller must be in Standby
to switch between local and remote operating modes.
6.1 Remote Control using the DB-25 Connector
The DB25 pin-out has been designed to be “drop in” compatible with the old
Mark II power supply to enable a minimum impact upgrade for the end user.
This however, is where the similarities end. The KRI Auto Controller combined
with the new KRI discharge and
fi
lament supplies provide for unparalleled op-
eration range and stability. There are two main options when using the DB-25
connector for remote control of the Auto Controller. One option is to use one of
the four programs stored in the auto controller and enable the system using the
rear port. These programs can be acquired using the front panel as described
in the operation sections 4 and 5 of this manual, or they can be acquired using
the rear panel remote as describe below in section 6.2.3. The other option is
to input the desired operating parameters via the analog inputs and then use
the Auto Controller for sequencing and/or automatic feedback to keep the dis-
charge parameters constant.
6.1.1 Remote enable of the Four Stored Programs using the
DB-25 Connector
When using the remote enable the programs are entered and stored using
the front panel as described in Operation sections 4 and 5 of this manual.
After the programs have been acquired using the front panel, switch the
front panel from local to remote. Connect pin 7 (Beam on) to pin 20 (Beam
on return) on the rear panel DB-25 connector to enable the program se-
lected from the front panel.
6.1.2 Remote Analog Setpoint Option on the DB-25 Connector
The remote analog setpoint option allows active control over the setpoints
while the Auto Controller is enabled. When using the remote enable along
with the remote analog setpoints, the desired operating parameters are
applied to the analog ports as described in Table 6-1. Since the DB-25 has
no inputs for gas setpoints, the active program serves as the gas setpoint
input.
