CHAPTER 4
OPERATING INSTRUCTIONS
Entire Contents Copyright
2004 by Adaptive Power Systems, Inc. (APSI) • All Rights Reserved • No reproduction without written authorization from APSI.
APS-1000 Series
4 - 9
OM-001-01000-000-04.0
Lock Button
Pressing the LOCK/LOCAL button (on the CURRENT display) will light the LOCK
LED (on the CURRENT display) and disable the other controls, except the P / PF
button on the (on the POWER / PF display). Pressing the LOCK/LOCAL button again
unlocks the front panel. This procedure is used to avoid accidental adjustments to the
system.
External Switching Control
You can attach a simple external switches, relays, or a PLC, to the 9-pin D-sub
connector on the rear panel. External switching can be used to control the output
ON/OFF or to switch between any of three pre-programmed control memories (M1,
M2, or M3). Chapter 5, External Interface, describes the external switching operations.
NOTE:
The 9-pin D-sub connector is NOT an input/output port for RS-232 serial
data or for GPIB parallel data.
