Ametek SHZF2 SCR Series, Instruction, Operation And Maintenance Manual

Page: 17 / 48

SHZF2/SHZF3 SCR Power Controller Operation
Rev 2 Ametek HDR Power Systems 11
CHAPTER 4 - Operation
4.1 General
This Chapter provides information necessary for proper setup and operation of various methods used
to control the SHZF2/SHZF3.
a. Front Panel indications
b. Command input control
c. Remote manual control with a potentiometer
d. Auto/manual control with a controller and potentiometer
e. On/off
control
f. Shutdown
Figure 4.1 Control Panel
4.2 Front Panel Indicators
Control Power Indicator – A Red Light Emitting Diode (LED) located on the front cover of the unit
signals when the control power is present.
Command Signal Indicator - The Command Signal Indicator is a green Light Emitting Diode (LED)
located on the front cover of the unit. The brilliance of this LED will change with a current Command
Signal. The brilliance increases with an increased Command Signal and decreases with a decreased
Command Signal. The LED will not function with a voltage or manual input.
Blown Fuse Indicator - The Blown Fuse Indicators are yellow Light Emitting Diodes (LED) located on
the front cover of the unit. There is one LED for each phase. Switches on each fuse controls the LED.
4.3 Command Input Control
The SHZF2/SHZF3 is calibrated at the Factory for the specified input type and normally does
NOT
need adjustment. However, should a setup be required use the following methods. Refer to chapter
3.5 for the Command signal input configuration.