Precision-control-systems 915 User Manual

Page 7 of 21 Remote Interlock Switch This feature provides for remote process interlock shutdown of the heater power. This is accomplished by ope

Page 8 of 21 not source current for pyrometer operation. Connect the 4-20mA signal to TB 100 pins 18+ and 19-. • “TCT” and “TCP” options: To use

Page 9 of 21 Operating Instructions Controls and Indicators Figure 4-1 shows the location of the controls and indicators. Main Disconnect Swi

Page 10 of 21 Lamp-Out Indicator • Indicator light flashing indicates a lamp out condition. This feature is available only if the lamp out (LL)

Page 11 of 21 Temperature Control Option This section contains temperature controller configuration information for your system. Refer to the mod

Page 12 of 21 Figure 4-2 Conduction of one SCR when turned on at the beginning of a half-cycle. Because an SCR is a type of diode, it

Page 13 of 21 Figure 4-4 Conduction of two SCRs connected in reverse parallel when turned on after the beginning of the half-cycl

Page 14 of 21 90° PHASE ANGLE 360° 270° 180° 90° 360° 270° 180° 90° 0° MEDIUM POWER OUTPUT 135° PHASE ANGLE 360° 270° 180° 90° 360° 270° 180° 90°

Page 15 of 21 output is quite constant, rather than being divided into multiple-cycle periods of on time and off time. In addition, a variety of

Page 16 of 21 Maintenance & Troubleshooting Routine Maintenance The following bimonthly routine maintenance is suggested. 1. Remove power c

ContentsIntroduction ...

Page 17 of 21 Calibration Generally components of the power control system hold their calibration very well over a long period of time. Usuall

Page 18 of 21 480 VAC units: 3,750 VDC 240 VAC units: 1,875 VDC 120 VAC units: 0.917 VDC Adjust the EXT 200 span potentiometer if necessary. 7. V

Theory of Operation ... 11Principle

Page 1 of 21 Introduction General Description The Model 915 power control system is a complete power control “solution” featuring a number of ele

Page 2 of 21 Optional Features The following options are available: Automatic Temperature Control Option The automatic temperature control opt

Page 3 of 21 Safety !WARNING! Hazardous voltages are present at the main disconnect switch and load terminals. Setting the setpoint potentiome

Page 4 of 21 Installation This section describes how to install and wire the Model 915 power control system. The features and options mentioned

Page 5 of 21 Wiring Connections The weight of the Model 915 varies slightly with the options installed. The maximum weight of the system is 110

Page 6 of 21 Power Wiring Connections Line Connections Referring to the wiring specification in table 3-1, connect the external power lines to th