Precision Control Systems 930 - Manual (Page 15)

Model 930 ControlIR TM Instruction Manual Operating Instructions
Research, Inc. Page 11 of 25
Heater
Off On
Heater
On
Cooling
Off On
Cooling
On
Setpoint
Rem Loc
Heater
Overtemp
Lamp Out
OCT SCR
070
070
PV
SV
000
Local
1. Disconnect Switch
2. Optional Temperature Controller or
Optional Voltmeter
3. Heater On / Off Switch
4. Heater On Indicator
5. Remote / Local Setpoint Switch
6. Local Setpoint Potentiometer
7. Cooling On / Off Switch
8. Cooling On Indicator
9. Heater Over-Temperature Indicator
10. Over Current / Shorted SCR Indicator
and Optional Lamp Out Indicator
1
2
3 4 5 6
7 8 9 10
Remote/Local Setpoint
Switch
Local Setpoint
Potentiometer
Load Volts Indicator
(Option Code VM)
Figure 4-1 Controls and
Indicators
The remote/local setpoint switch allows the operator to select the source for the power
level setting to the load, lamps, or heaters. The selections include:
1. LOCAL: The power level is adjusted using the digital 10-Turn ‘LOCAL
SETPOINT’ potentiometer.
2. REMOTE: The power level is controlled from a remote location or device or the
power level is controlled by the temperature controller if the TCT/TCP
temperature option is installed. The operator will enter a desired temperature
setpoint for the process. The power level is adjusted based on the feedback from
the temperature sensor connected to the process.
The power level is adjusted using the digital 10-Turn ‘LOCAL SETPOINT’
potentiometer when the ‘Setpoint’ switch is in the ‘Local’ position.
This option provides indication of the ‘True RMS’ load voltage.