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EATON
www.eaton.com
Instruction Booklet
IB020003EN
Effective January 2021
AMPGARD RVSS
Reduced Voltage Soft-Starter
User Manual
Section 4: Inputs / outputs
AMPGARD RVSS inputs and outputs are handled by the RVSS I/O
Board. This board processes the DSP signals and passes them on for
processing.
shows a list of RVSS signals handled by the I/O Board.
shows where these signals connect on the I/O Board.
Table 5. I/O board signals
Input name
Wire numbers
Connections
Signal
name
Function
EPO
82, 83
J14-3 and J14-4
Emergency Stop pushbutton input
IP0
60, 61
J12-1 and J12-2
DIN0
External Fault
IP1
62, 63
J12-3 and J12-4
DIN1
Starter main contactor status Input
IP2
64, 65
J12-4 and J12-6
DIN2
Bypass contactor status input
IP3
66, 67
J12-7 and J12-8
DIN3
Field-wire Reset
IP4
68, 69
J12-9 and J12-9
DIN4
SS2 Bypass mode selector switch input
IP5
70, 71
J12-11 and J12-12
DIN5
Profile mode selector input
IP7
74, 75
J12-15 and J12-16
DIN7
Start relay (CR) input
Phase A PT voltage
V11
J4-1
PT phase A secondary voltage
Phase B PT voltage
V2
J4-2
PT Phase B secondary voltage (grounded)
Phase C PT voltage
V31
J4-3
PT Phase C secondary voltage
Phase A current
C34, C62
J7-5 and J7-6
Phase A CT secondary winding input and return
Phase B current
C24, C62
J7-3 and J7-4
Phase B CT secondary winding input and return
Phase C current
C14, C62
J7-1 and J7-2
Phase C CT secondary winding input and return
Output name
Connections
Function
K3
K3, 24N (T3)
J13-6 and J13-13
RY1 Bypass contactor control relay BX control
K2
K2, 24N (T2)
J13-7 and J13-15
RY2 Main contactor control relay MX control
K4
K4, 24N (T4)
J13-3 and J13-11
TRPX relay control
K1
K1, 24N (T1)
J13-8 and J13-16
Ready
K5
K5, 24N (T5)
J13-2 and J13-10
Up-to-speed detection
K6
K6, 24N (T6)
J13-1 and J13-9
I% FLA > 90% of Current Limit %
Fiber optic signals
Connections
Function
Phase A positive gate
A+
U39
Firing signals for Phase A positive SCR gate
Phase A negative gate
A-
U49
Firing signals for Phase A negative SCR gate
Phase A heat sink temp TA
U56
Phase A heat sink thermistor signal
Phase B positive gate
B+
U51
Firing signals for Phase B positive SCR gate
Phase B negative gate
B-
U52
Firing signals for Phase B negative SCR gate
Phase B heat sink temp TB
U57
Phase B heat sink thermistor signal
Phase C positive gate
C+
U54
Firing signals for Phase C positive SCR gate
Phase C negative gate
C-
U55
Firing signals for Phase C negative SCR gate
Phase C heat sink temp TC
U58
Phase C heat sink thermistor signal
Communications
with BCM
J5
Signal cable to BCM
24VDC input power
24N, 24P, G1 (GND)
J8
Input power to I/O Board