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General,
description
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Solid-State Overload Relays 0
Motor Logic
®
Plus II programmable unit
General
The Motor Logic Plus II programmable solid-state overload relay is separately powered from a 110/120 Vac,
50/60 Hz source. It has three internal current transformers for measuring phase currents from 0.5–90 A, and one
internal zero-sequence current transformer for measuring earth ground faults up to 10 A. Current measurements
from 90–540 A require the use of external CTs and result in a residual ground fault detection system.
LED indicators on the front face of the overload relay display the product status and the states of the fault relay,
the inputs, and the outputs. A reset button is located on the face for manual reset.
Four digital inputs are available via field wiring terminals. All digital inputs are internally pulled down to the board
reference. One power terminal (P) is used to source the inputs to +24 Vdc. Inputs 1 and 4 can be used as standard
digital inputs, or they can be independently configured through programming as PTC (positive temperature
coefficient) and Reset inputs, respectively. When Input 1 is configured as a PTC input, the return reference is to
the G terminal.
Three relay outputs are available via field wiring terminals: one Form C relay (single-pole, double-throw) for fault;
and two Form A relays (single-pole, single-throw) for contactor control. A Form C relay has one normally open
(N.O.) and one normally closed (N.C.) set of contacts that share a common terminal; when energized, both sets
of contacts change state. The Form A relays are normally open and wired to share a common terminal; however,
their operation is independent.
Two-wire Modbus
®
communication is internal to the overload relay and allows for direct connection to a
Motor Logic Plus display (9999 MLPD)
(1)
or motor management system (9999 MMS) via the terminal blocks
located on the front face. The DeviceNet communication module (9999 DN2) connects to the Sub-D connector on
the right side of the product.
The Motor Logic Plus II programmable overload relay provides the following protection features for 3-phase
(default) and single-phase motors:
b Thermal Overload
b Undercurrent
Programmable trip delay from 2 to 60 seconds
b Jam
b Current Unbalance (3-phase only)
Programmable from 2 to 25%
b Phase Loss (3-phase only)
b Ground Fault (enabled/disabled)
Zero sequence transformer core
Programmable from 1 to 10 A
Ground fault inhibit programmable from 1 to 255 seconds
b Reverse Phase (3-phase only)
b Single Phase (3-phase only)
b PTC Thermistor
Other features include:
b Programmable overload trip class: 5, 10, 15, 20, or 30
Manual and automatic reset option
Warning of impending faults
Motor thermal capacity
b Restart delay timers
Rapid cycle: programmable from 0 to 500 seconds
Motor cool down: programmable from 2 to 500 minutes
Dry well recovery: programmable from 2 to 500 minutes
Description
Motor Logic Plus II programmable solid-state overload relay 9065 SP2
1 Status, Trip/Warn, and output LEDs
2 3 fault relay outputs
3 3 outputs
4 4 input LEDs
5 Sub-D connector for DeviceNet module (on side)
6 3 network terminals
7 4 digital inputs
8 Reset/Test Trip button
(1) The Motor Logic Plus display is powered using the cable configuration kit (9999CCKIT) and a 9 V battery (not included).
9999DN2 installed.tif
9065 SP2 with 9999 DN2
MLPD reverse color.tif
9999 MLPD
9999MMS-2003-01.tif
9999 MMS
cable.tif
9999CCKIT
(battery not included)
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Characteristics:
page 3/5
References:
page 3/7
Dimensions:
page 3/9