Install Instructions

INPUT
POWER
L1
M1 M2 M3
L2 L3
OL
OL
OL
B
A
C
MAGNETIC
CONTACTOR
MOTOR
MS455
THERMOS TAT
OPTIONAL
CONTROL
POWER
24 - 240 VAC
TM
M
MAG.
COIL
HAND
STOP
OFF
AU
TO
PILOT
START
OL
BE SURE POWER IS DISCONNECTED PRIOR TO INSTALLATION!
FOLLOW NATIONAL, STATE AND LOCAL CODES.
READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.
The Model 455, 3-phase, 190-480VAC voltage monitor combines line and load-side monitoring to
alert the user of contactor failure. Line-side monitoring will protect the motor from damaging power
conditions including high and low voltage, voltage unbalance, single-phasing, phase reversal and
rapid cycling. The Model 455 is now equipped with an infrared LED to communicate with the
hand-held diagnostic tool—Informer MS Edition—to display trip points, real-time data, and the
last 20 faults and 32 motor starts. Motor run hours, also displayed by the Informer MS, can
now be reset on the 455.
CONNECTIONS
1. Mount the MotorSaver
®
in a convenient location in or near the motor control panel. If the location is
wet or dusty, it should be mounted in a NEMA 4 or 12 enclosure.
2. Connect L1, L2, and L3 on the MotorSaver
®
to the LINE SIDE of the motor starter.
3. Connect M1, M2 and M3 to the power lines on the LOAD SIDE of the motor starter.
NOTE: If a 2-pole contactor is used, jump the hard-wired line from the L side terminal (the wire not
connected through the contactor) to its corresponding M terminal.
If load-side protection is not desired, connection to the M terminals is not required—the
Model 455 will operate as a line side only voltage monitor in this configuration.
4. Connect the output relay to the circuitry to be controlled. Connect the normally open contact in
series with the magnetic coil of the motor starter as shown in Figure 1.
NOTE: L1 and M1 must be connected to the same supply line as shown. Similarily, L2 and M2, as
well as L3 and M3 must be connected to the same supply lines.
INSTALLATION INSTRUCTIONS FOR
SYMCOM’S MOTORSAVER
®
MODEL 455
2880 North Plaza Drive, Rapid City, South Dakota 57702
[phone] · [phone] · fax [phone]
www.symcom.com
INPUT
POWER
L1
M1 M2 M3
L2 L3
OL
OL
OL
B
A
C
MAGNETIC
CONTACTOR
MOTOR
MS455
THERMOSTAT
OPTIONAL
CONTROL
POWER
24 - 240 VAC
TM
M
MAG.
COIL
HAND
STOP
OFF
AU
TO
PILOT
START
OL
Figure 1. 3-Pole Contactor Wiring Diagram Figure 2. 2-Pole Contactor Wiring Diagram
222 Disk Drive, Rapid City, SD 57701
[phone] www.symcom.com