Delta Tau 3Ax-602646-xUxx manual Symbol` Description Tp Factory Set, Low

Quad Amp Hardware Reference Manual

Figure 62 Soft Start Board Jumper, Potentiometer, Test Point, and LED Locations

Name	Position	Description	Default
E1	1-2 jumper	Internal Power Supply Connection
	2-3 open
JP6	Jumper	E-Stop Configuration
JP7	Jumper	E-Stop Configuration

Symbol`	Description	Tp Factory Set	Notes
R4 & TP5	High line fault set point	5.2/10.4 V	High line trips at 255/510 VAC
R2 & TP4	Over voltage fault set point	4.1/8.2 V	O/V trips at 410/820 VDC
TP3	Shunt IGBT turn-on set point	3.7V @ 230 VAC	Shunt turns on at 114% of the
			nominal bus voltage
TP2	Main IGBT turn-on set point	2.75V @ 230VAC	Main IGBT turns on at 80% of
			the nominal bus voltage

Note: Main and shunt set points are line sensitive and will vary with line voltage.

LED	Symbol	Description
D25	L/LOW	Low Line, on when line voltage is below 30 VAC
D12	L/HI	High Line, on when line voltage is above 255 VAC
D7	GND	GND Fault, on if GND fault detected by Quad Amplifier logic board
D29	BIAS	Gate drive/bias fault, on if the gate drive supply fails
D27	OPEN	Open contacts fault, on when no main AC contactor auxiliary contacts are
		not wired to QA or not working properly
D21	SHNT	Shunt, on when the shunt regulator is on
D22	RDY	Ready, on when no fault condition
D26	NOLINE	No Line, on when no 3-phase line present
D28	DSAT	De-saturation fault, on when current surge across the main IGBT or Shunt
		IGBT is detected

24 Installation