INFICON RS-3000 Power Supply Controller - Manual (Page 13)

RS-3000 Power Supply Controller
instruments
mode will be entered when the start key is pressed. This is confirmed by the illumination of
the MAN LED indicator.
In the manual mode, the AMPS value shown in the large display can be varied using the
INC and DEC keys on the front panel or pendant. The AMPS value displayed is the basis
for what is requested from the power supply. Meanwhile, the small display alternately
shows Kilowatts and minutes. The Kilowatts value is the power being expended at the
supply output. The time value is the elapsed time from the press of the start key. The
Kilowatts and time values are differentiated by the illumination of either the Kw or MIN
LEDs. Pressing the stop key ends the manual mode which is confirmed by the display of
the text O.F.F. in the large display. The pendant stop key is equivalent to the front panel
stop key. Pressing the stop key places the RS-3000 into a quiescent state where the power
output ON/OFF signal to the T3000 is set to OFF (see section 10.1, pin 13) and the RS-
3000 analog output to control the T3000 power output is set to zero (see section 10.1, pin
7).
3.3 Ramp
mode
Whether the RS-3000 is in manual mode or ramp mode is determined by the value of ramp
minutes. If ramp minutes is at a non-zero value, that is, any value but 0.0, then ramp mode
will be entered when the start key is pressed. This is confirmed by the fact that the MIN
value is counting down and that the MAN LED is not illuminated. Ramp mode does not
have a specific LED indicator.
In the ramp mode, the AMPS value shown in the large display changes based on the
programmed values of ramp current and ramp minutes. The AMPS value displayed is the
basis for what is requested from the power supply. Meanwhile, the small display alternately
shows Kilowatts and minutes. The Kilowatts value is the power being expended at the
supply output. The time value is the remaining time until ramping terminates at the desired
current. The Kilowatts and time values are differentiated by the illumination of either the Kw
or MIN LEDs. Pressing the stop key ends the ramp mode which is confirmed by the display
of the text O.F.F. in the large display. If the stop key is not pressed, the MINutes value will
count down to zero (while the power ramps up to the programmed value) and then the unit
will automatically go into the manual mode after zero minutes remaining has been
achieved. When in the manual mode the MINutes time will advance indefinitely at the last
power level set during the ramp mode.
Pressing the stop key during the RAMP mode or in the subsequent Manual mode, places
the RS-3000 into a quiescent state where the power output ON/OFF signal to the T3000 is
set to OFF (see section 10.1, pin 13) and the RS-3000 analog output to control the T3000
power output is set to zero (see section 10.1, pin 7).
3.4 Remote
mode
This mode uses a remote controller (such as the STC-2000) to control the power supply
output.
Pressing the RMT key puts the unit into the remote mode. This is confirmed by the
illumination of the RMT LED. Pressing the RMT key again takes the unit out of the remote
Specifics Page 3 - 2 Section 3