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The drive signal to the SCR trigger boards:
The temperature alarm:
The heat sink temperature is derived from a resistive temperature detection (RTD)
sensor mounted on the heat sink. This is then compared to two set points.
The first alarm is a warning and activates the externally connected device.
This allows time to correct the problem before the second alarm inhibits the firing circuit.
The Shorted SCR Alarm:
When a short is detected the externally connected device output is activated.
SW1 - Input Selection
SW3 - Phase/Triggering
Selection
LD3-SCR1
LD4-SCR2
LD5-SCR3 LD2-Demand
Содержание MaxPac
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