Owner manual

Chapter 1 –Introduction
1-3
SMP-3 OVERVIEW
The SMP-3 overload relay is a solid-state electronic overload
relay that is separately powered and microprocessor-based.
FUNCTIONALITY
The SMP-3 overload relay provides the following protective
features:
 Overload protection
 Phase loss protection
 Ground fault protection
 Jam/stall protection
The SMP-3 overload relay also features:
 Two triac outputs (AC) for contactor control
 Manual reset button
 Test function
 Illegal FLC setting prevention
 Non-volatile operating memory protection
 Communication loss protection
 Ambient temperature compensation
 DIP switch selectable functions:
– Adjustable trip class 10, 15,
20 or 30 (2 DIPs)
– Automatic or manual reset (1 DIP)
– Ground fault protection (1 DIP)
– Jam/stall protection (1 DIP)
– Test function (1 DIP)
– 5:1 FLC setting range (8 DIPs)
 Status LEDs
– Trip (Red)
– OUT B (Yellow)
– OUT A (Yellow)
– Power (Green)
 Remote reset button (option)
 Communications
COMMUNICATIONS CAPABILITIES
The SMP-3 overload relay has communications capabilities.
The embedded communications capabilities can be used to
control the SMP-3 overload relay or to obtain status
information from the SMP-3 overload relay:
 Control Functionality
– Turn OUT A ON/OFF
– Turn OUT B ON/OFF
– Reset/Clear Fault