Quad Amp Hardware Reference Manual
Installation
24
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