Option Setup
ZF2/ZF3 SCR Power Controller
20
Ametek HDR Power Systems
Rev 3
the measured signal. Under the most controlled conditions, the circuit could be used up to the
maximum switch setting of 97.5%.
NOTE
Under normal usage, the gain potentiometers, P1, P2 and P3, should always be fully
counter-clockwise. On a new board, always verify that the potentiometers are full
counter-clockwise when setting the DIP switches. Only adjust these potentiometers if
you are measuring the test points and trimming out current errors under controlled
conditions.
If you are only using 3 or 4 heating elements per leg, these factors are less significant compared to the
large current change when one heater opens. As the number of heaters increase, it becomes
increasingly important to consider all of these factors.
If you are attempting to monitor a large number of heaters using a very sensitive setting, the above
factors could either cause a false alarm, or prevent the loss of one heater element from being
detected.
Summary of Contents for ZF2 SCR Series
Page 6: ...Table of Contents ZF2 ZF3 SCR Power Controller iv Ametek HDR Power Systems Rev 3...
Page 8: ...Safety Instructions ZF2 ZF3 SCR Power Controller 2 Ametek HDR Power Systems Rev 3...
Page 24: ...Operation ZF2 ZF3 SCR Power Controller 18 Ametek HDR Power Systems Rev 3...
Page 32: ...Troubleshooting ZF2 ZF3 SCR Power Controller 26 Ametek HDR Power Systems Rev 3...
Page 51: ...Notes...
Page 52: ...503 Lakeview Plaza Blvd Ste C Worthington Ohio 43085 USA...
