18
EATON
www.eaton.com
Instruction Booklet
IB020003EN
Effective January 2021
AMPGARD RVSS
Reduced Voltage Soft-Starter
User Manual
Figure 9.
Power
Medium
Voltage
Control
Low
Voltage
Motor
CPT
ISW
PT
M
B
MUI
6 (Fiber)
(temperature)
(trigger)
3
3 (Fiber)
3
1
3
3
3
3
3
Power Pole(s)
Optional
di/dt
Reactor
4160V, 4800V
3 PH
60 Hz
Starter
SCR
Truck
CTs
EATON Ampgard
Reduced Voltage, Solid State,
Soft-Starter
Block Diagram 289174, Rev. 1.0
400 A
CR
CR
B
MX
MX
MX
MX
MX
Ma
Mb
TRPX
TRPX
FAULT
MPR
Ma
Ba
BX
CR
K3 IP2 IP1 J4
J14
J7
K4 K2
IP7
IP3
TRPX
MX
BX
RY1
RY2
Reset
E-Stop
Start
Stop
RY1
CH2 CH1
E-Stop
24VDC
Power
Supply
48 VDC
Power
Supply
BCM
Legend
M
RFI
Filter
DSP
EDC
J5
RY2
Fanout, Gate Drivers,
& Snubbers
RUN
OFF
IOB
NOTE: Power Pole SCR
depiction is for illustration only.
B
Bypass Contactor
Ba
Bypass Feedback, N.O.
BCM
Base Control Module
BX
Bypass Contactor Pilot Relay
CPT
Control Power Transformer
CR
Control Relay (primary)
CT
Current Transformer
DSP
Digital Signal Processor (controller)
EDC
Ethernet Daughter Card
IOB
Interface Input/Output Board
ISW
Isolation Switch
M
Main Contactor
Ma
Main Feedback, N.O.
Mb
Main Feedback, N.C.
MPR
Motor Protective Relay (optional)
MUI
Monitoring User Interface (keypad)
MX
Main Contactor Pilot Relay
PFCC
Power Factor Correction Capacitor*
PS
Power Supply
PT
Potential Transformer
SS2
Selector Switch, Emergency Bypass*
TRPX
Fault Indicator, Trip
Lamp or Fiber Optic
* - not shown
1
2
3
4
8
5
6
7
6
6
1
AMPGARD starter
2
SCR truck control
and feedback
3
SCR truck power modules
and bypass contactor
4
Starter M contactor coil
5
Starter M contactor
pilot relay
6
RVSS control, I/O
and interface
9
7
RVSS local or remote
start control
8
RVSS control electronics 24 VDC power
9
RVSS power pole 48 VDC power
Reset
Power and Control Block Diagram.