Greenlee MPM-120 User manual

MICROPROCESSOR-
CONTROLLED PHASE MONITORS
MONITORES DE FASE
CONTROLADOS POR
MICROPROCESADOR
CONTROLEURS DE
PHASE COMMANDES
PAR MICROPROCESSEUR
999 3823.5 © 2000 Greenlee Textron IM 1498 10/00
INSTRUCTION MANUAL
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MANUEL D’INSTRUCTIONS
789
10 11 12
COPPER,60/75°C WIRE ONLY
FREQ. SHIFT
UNDER
UNBAL
OVER
PHASE SHIFT/REV
MODE
AUTO/
RESET
MEMORY MANUAL
TMG
ØBØA ØC
123456
NORMAL
TIME
DELAY VOLTAGE
ADJ.
654321
7 8 9 101112
Read and understand all of the instructions and safety information
in this manual before operating or servicing this tool.
Lea y entienda todas las instrucciones y la información sobre
seguridad que aparecen en este manual, antes de manejar estas
herramientas o darles mantenimiento.
Lire attentivement et bien comprendre toutes les instructions et
les informations sur la sécurité de ce manuel avant d‘utiliser ou
de procéder à l‘entretien de cet outil.
MPM-120/230/380/440/575

2
KEEP THIS MANUAL
Description
Greenlee Microprocessor-Controlled Phase Monitors are intended to protect fixed
equipment from the following conditions: Under-voltage, over-voltage, phase reversal,
phase shift, phase loss, phase unbalance, frequency shift and regeneration. They have
DPDT (double pole, double throw) output contacts for connection to equipment
controller or to an alarm. When the phase monitor detects that the power supplied by
the circuit is outside of the specified tolerances, it opens the NO contacts and closes
the NC contacts.
Red LEDs indicate fault conditions to simplify troubleshooting; a green LED indicates
that the power provided is within the specified tolerances after a fault is cleared.
Greenlee offers several models of microprocessor-controlled phase monitor: MPM-120,
MPM-230, MPM-380, MPM-440, and MPM-575. The digits in the catalog number
signify the corresponding nominal circuit voltage.
Safety
Safety is essential in the use and maintenance of Greenlee tools and equipment. This
instruction manual and any markings on the tool provide information for avoiding
hazards and unsafe practices related to the use of this tool. Observe all of the safety
information provided.
Purpose
This instruction manual is intended to familiarize all personnel with the safe operation
and maintenance procedures for the following Greenlee Microprocessor-Controlled
Phase Monitors:
MPM-120 MPM-440
MPM-230 MPM-575
MPM-380
Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge.
Greenlee and are registered trademarks of Greenlee Textron.

MPM-120/230/380/440/575
3
Important Safety Information
Read and understand this material before operating
or servicing this equipment. Failure to understand
how to safely operate this tool can result in an
accident causing serious injury or death.
This symbol is used to call your attention to hazards or unsafe practices
which could result in an injury or property damage. The signal word,
defined below, indicates the severity of the hazard. The message after the
signal word provides information for preventing or avoiding the hazard.
SAFETY ALERT SYMBOL
Immediate hazards which, if not avoided, WILL result in severe injury or death.
Hazards which, if not avoided, COULD result in severe injury or death.
Hazards or unsafe practices which, if not avoided, MAY result in injury or
property damage.

4
Important Safety Information (cont’d)
Electric shock hazard:
Contact with live circuits can result in severe injury
or death.
Electric shock and fire hazard:
• Do not expose this unit to rain or moisture.
• Do not use the unit if it is wet or damaged.
• Use this unit for the manufacturer’s intended purpose only, as described
in this manual. Any other use can impair the protection provided by the
unit.
Failure to observe these warnings can result in severe injury or death.
Electric shock hazard:
Shut off and lock out power before installing this
device.

MPM-120/230/380/440/575
5
Electric shock hazard:
Do not apply more than the rated voltage between any two input
terminals, or between any input terminal and earth ground.
Failure to observe this warning can result in severe injury or death.
Do not operate with the case open.
Failure to observe this warning can result in severe injury or death.
• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity. See
Specifications.
Failure to observe these precautions can result in injury and can damage
the unit.
Important Safety Information (cont’d)

6
Identification
1. Input Terminals
Connect the three-phase circuit to these terminals
2. Output Terminals
Connect the control for the protected machine, or the alarm, to these terminals
3. Fault LEDs
One of these illuminates to indicate the first fault detected by the microprocessor
4. Normal LED
This illuminates to Indicate that the power from the three-phase circuit is within
the specified tolerances
5. Time Delay Adjustment
Use this to set the amount of delay for energizing the output relay after power is
determined to be within specified tolerances. (See Specifications for other fixed
time delays in the unit)
6. Voltage Adjustment
Use this to select the nominal circuit voltage
7. Mode Selector
Use this to select Manual,
Auto/Reset, or Memory
mode. These modes are
explained under Features.
8. Wiring Diagrams
Shows the alarm (de-
energized) state of the
DPDT output relay
789
10 11 12
COPPER,60/75°C WIRE ONLY
FREQ. SHIFT
UNDER
UNBAL
OVER
PHASE SHIFT/REV
MODE
AUTO/
RESET
MEMORY MANUAL
TMG
ØBØAØC
123456
NORMAL
TIME
DELAY VOLTAGE
ADJ.
654321
7 8 9 101112
3
45
6
7
1
8
2

MPM-120/230/380/440/575
7
Features
Greenlee Microprocessor-Controlled Phase Monitors include the following
features:
•A microprocessor, which continually monitors the input circuit for faults in
the following order: Phase Reversal, Phase Shift and Phase Loss, Phase
Unbalance and Frequency Shift, Undervoltage and Overvoltage. Although the
circuit may have more than one fault at a time, only one Fault Indicator LED
will be illuminated at a time.
•A Time Delay Adjustment that allows the user to select the amount of time
that occurs between these two events: (1) The moment that the microproces-
sor senses that the input power is normal and (2) the moment that the
microprocessor changes the state of the contacts (opening the NC contacts
and closing the NO contacts).
•A Voltage Adjustment that allows the user to select the nominal circuit
voltage.
•Three operating modes:
Auto/Reset:
When the phase monitor senses that the input power is normal, this mode
automatically changes the state of the contacts and resets the fault
indicator LED.
Manual:
When the phase monitor senses that the input power is normal, this mode
does not change the state of the contacts or reset the fault indicator LED.
The user must temporarily set the mode selector to Auto/Reset until the
phase monitor returns to normal.
Memory:
When the phase monitor senses that the input power is normal, this
mode automatically changes the state of the contacts but does not reset
the fault indicator LED. The user must temporarily set the mode selector to
Auto/Reset until the Fault Indicator LED is not illuminated.

8
Typical Wiring Diagram
M
A
B
C
7 8 9 10 11 12
1 2 3 4 5 6
STOP START
1
32
4
5
6
1. Microprocessor-Controlled Phase Monitors
2. Start Pushbutton
3. Stop Pushbutton
4. Contactor or Motor Starter
5. Motor or other load
6. Control Transformer

MPM-120/230/380/440/575
9
Installation and Connection
1. Mount the microprocessor-controlled phase monitor in, on or near the control panel. If
the location is wet or dusty, mount the device inside a NEMA-4 or NEMA-12 enclosure.
Note: The phase monitor has four mounting holes that measure approximately 3 mm
(0.125") in diameter and 7 mm (0.25") in depth. Apply a maximum of 2.25 Newton-
meters (20 inch-pounds) of torque to the fasteners (purchased separately) when
mounting the phase monitor.
2. Use a voltmeter to determine the nominal voltage on the circuit. Set the Voltage
Adjustment to the corresponding voltage level.
3. Use a phase sequence indicator to determine the A, B and C phases.
4. Shut off and lock out power.
5. Set up the phase monitor as follows:
a) Set the Mode Selector to Auto/Reset.
b) Set the Time Delay to the shortest time delay setting.
c) Connect the power circuit to the phase monitor’s Input Contacts: Connect phase A
to Input Terminal 1, phase B to Input Terminal 3, and phase C to Input Terminal 5.
•For WYE (Y) electrical systems, connections to neutral are not required.
•Do not connect the outputs until Step 8.
6. Apply power. The microprocessor will begin to monitor the power provided by the input
circuit. The red LEDs will flash in sequence.
•If all of the red LEDs stop flashing and the green LED begins flashing, the power
provided by the circuit is within specified tolerances. The green LED will flash for the
duration of the selected time delay. Then it will stop flashing and remain on.
•If one red LED remains illuminated, see Fault Indicators and Troubleshooting.
7. After clearing any faults, shut off and lock out power.
8. Use the wiring diagrams provided on the unit to connect the equipment control or
alarm to the phase monitor’s Output Terminals. Typically the equipment control is
connected to the NO contacts while an alarm is connected to the NC contacts.
9. Set the Time Delay Adjustment and Mode Selector to the preferred settings.
10. Apply power.

10
Fault Indicators and Troubleshooting
•Frequency Shift: The input frequency is too high or too low.
•Under: The input voltage is too low for the setting of the Voltage Adjustment.
Troubleshoot the circuit to determine if the setting is incorrect or there is a
problem with the line voltage. See Installation and Connection section for
instructions to determine correct setting for Voltage Adjustment.
•Unbal: The voltage among the three phases is unbalanced. This could be due
to (a) an excessive load on either phase A, B or C, or (b) a high-resistance
load (such as a poor connection, shorted motor winding, pitted or burnt
starter contacts).
To calculate the amount of phase unbalance:
(1) Measure the voltage at each phase.
Example: Phase A to B = 202 Phase A to C = 220 Phase B to C: 214
(2) Find the average voltage.
Example: (205 + 220 + 214) divided by 3 = 636 / 3 = 213
(3) Find the maximum deviation from the average.
Example: Phase A to B: 213 - 205 = 8 Phase A to C = 220 - 213 = 7
Phase B to C = 214 - 213 = 1
(4) Divide the maximum deviation by the average.
Multiply that result by 100 to get a percentage.
Example: 8 / 213 = 0.038 x 100 = 3.8% Unbalance
•Over: The input voltage is too high for the setting of the Voltage Adjustment.
Troubleshoot the circuit to determine if the setting is incorrect or there is a
problem with the line voltage. See Installation and Connection section for
instructions to determine correct setting for Voltage Adjustment.
•Phase Shift/Rev: This could have either of the following causes:
-
No input from phase B (possibly due to an open fuse, poor connection, etc.).
Troubleshoot the circuit.
- Two of the phases are reversed. Shut off and lock out power, switch any two
leads, then apply power.
•No Fault Indicator LEDs Illuminated: No input from phase A or C (possibly
due to an open fuse, poor connection, etc.). Troubleshoot the circuit.

MPM-120/230/380/440/575
11
Specifications
Three-Phase Input Voltage:
MPM-120: 105, 110, 115, 120, 125, 130 VAC
MPM-230: 200, 210, 220, 230, 240, 250 VAC
MPM-380: 350, 365, 380, 390, 400, 415 VAC
MPM-440: 440, 450, 460, 470, 480, 490 VAC
MPM-575: 525, 550, 575, 600 VAC
Phase Sequence:
ABC (will not operate CBA)
Frequency :
Trip: 4% (57.6 - 62.4 Hz)
Reset: 3% (58.2 - 61.8 Hz)
Under Voltage (% of Set Point)
Trip: -10%
Reset: -7%
Over Voltage (% of Set Point)
Trip: +10%
Reset: +7%
Voltage Unbalance (% of Set Point)
Trip: 7%
Reset: 5%
Output Contact Rating:
MPM-120, MPM-230: DPDT, 10A @ 240 VAC Resistive, 470 VA inductive,
MPM-380, MPM-440, MPM-575: DPDT 3A @ 600 VAC Resistive, 360 VA
inductive
(Specifications continued on next page)

12
Response Times:
Operate
Sampling: 2 seconds
Delay-on-Make: (sampling delay) + (1.5 seconds to 5 minute delay)
adjustable in one (1) minute increments
Release
Under Voltage: 1.5 seconds (approx.)
Over Voltage: 1.5 seconds (approx.)
Frequency Shift: 1.5 seconds (approx.)
Unbalance: 2.0 seconds (approx.)
Phase Loss/Shift: 1.0 seconds (approx.)
(Total loss of operating voltage on phase A or C will result in a
release time of approximately 80 milliseconds.)
Operating Conditions:
0 °C to 55 °C (32 °F to 131 °F)
Storage Conditions:
- 45 °C to 85 °C (-49 °F to 185 °F)
Mounting Holes:
Diameter: 3 mm (0.125")
Depth: 7 mm (0.25")
Power Required: 7 VA typical
Specifications (cont’d)

MPM-120/230/380/440/575
13
Maintenance
Cleaning
Periodically wipe the case with a damp cloth and mild detergent; do not use
abrasives or solvents.
Do not attempt to repair this unit. It contains no user-serviceable parts.
Failure to observe this precaution can result in injury and can damage
the unit.

Greenlee Textron / Subsidiary of Textron Inc. 4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070

MPM-120/230/380/440/575
15
CONSERVE ESTE MANUAL
Descripción
Los Monitores de fase controlados por microprocesador de Greenlee han sido
diseñados para proteger equipo fijo de las siguientes condiciones: Baja tensión,
sobretensión, inversión de fase, cambio de fase, pérdida de fase, desequilibrio de
fase, cambio de frecuencia y regeneración. Estas unidades incluyen contactos de
salida CBB (bipolares de dos vías) para conectar a un regulador de equipo o a una
alarma. Cuando el monitor de fase detecta que la energía suministrada por el circuito
se encuentra fuera de la tolerancia especificada, abre contactos NO (normalmente
abiertos) y cierra contactos NC (normalmente cerrados).
El LED rojo indica condiciones de fallo para simplificar el diagnóstico y la solución
de fallos. El LED verde indica que la energía suministrada se encuentra dentro de la
tolerancia especificada luego de haberse borrado un fallo.
Greenlee ofrece varios modelos de monitores de fase controlados por microprocesador:
MPM-120,
MPM-230, MPM-380, MPM-440 y MPM-575. Los dígitos en el número
de catálogo indican la tensión de circuito nominal correspondiente.
Acerca de la seguridad
Es fundamental observar métodos seguros al utilizar y dar mantenimiento a las
herramientas y equipo Greenlee. Este manual de instrucciones y todas las marcas
que ostenta la herramienta le ofrecen la información necesaria para evitar riesgos
y hábitos poco seguros relacionados con su uso. Siga toda la información sobre
seguridad que se proporciona.
Propósito de este manual
Este manual de instrucciones tiene como propósito familiarizar a todo el personal
con los procedimientos de operación y mantenimiento seguros para los siguientes
Monitores de fase controlados por microprocesador de Greenlee:
MPM-120 MPM-440
MPM-230 MPM-575
MPM-380
Mantenga siempre este manual al alcance de todo el personal.
Puede obtener copias adicionales de manera gratuita, previa solicitud.
Greenlee y son marcas registradas de Greenlee Textron.

16
Importante Información sobre Seguridad
Lea y entienda este documento antes de manejar
esta herramienta o darle mantenimiento. Utilizarla
sin comprender cómo manejarla de manera segura
podría ocasionar un accidente y, como resultado
de éste, graves lesiones o incluso la muerte.
Este símbolo se utiliza para indicar un riesgo o práctica poco segura que
podría ocasionar lesiones o daños materiales. Cada uno de los siguientes
términos denota la gravedad del riesgo. El mensaje que sigue a dichos
términos le indica cómo puede evitar o prevenir ese riesgo.
SÍMBOLO DE ALERTA SOBRE SEGURIDAD
Peligros inmediatos que, de no evitarse, OCASIONARÁN graves lesiones o
incluso la muerte.
Peligros que, de no evitarse, PODRÍAN OCASIONAR graves lesiones o
incluso la muerte.
Peligro o prácticas peligrosas que, de no evitarse, PUEDEN OCASIONAR lesiones o
daños materiales.

MPM-120/230/380/440/575
17
Importante Información sobre Seguridad (continuación)
Peligro de electrocución:
El contacto con circuitos activados puede
ocasionar graves lesiones o incluso la muerte.
Peligro de electrocución e incendio:
•No exponga esta unidad ni a la lluvia ni a la humedad.
•No utilice esta unidad si se encuentra mojada o dañada.
•Utilícela únicamente para el propósito para el que ha sido diseñada
por el fabricante, tal como se describe en este manual. Cualquier otro
uso puede menoscabar la protección proporcionada por la unidad.
De no observarse estas advertencias pueden sufrirse graves lesiones
o incluso la muerte.
Peligro de electrocución:
Desconecte y bloquee la energía antes de
instalar este dispositivo.

18
Peligro de electrocución:
No aplique más del voltaje nominal entre dos terminales de entrada
cualesquiera, o entre una terminal de entrada cualquiera y una conexión
a tierra.
De no observarse esta advertencia pueden sufrirse graves lesiones o
incluso la muerte.
No haga funcionar esta unidad con la caja abierta.
De no observarse esta advertencia pueden sufrirse graves lesiones
o incluso la muerte.
•No intente reparar esta unidad, ya que contiene partes que deben
recibir mantenimiento por parte de un profesional.
•No exponga la unidad a ambientes de temperatura extrema o altos
niveles de humedad; Consulte las “Especificaciones”.
De no observarse estas precauciones podrían sufrirse lesiones o daños
a la unidad.
Importante Información sobre Seguridad (continuación)

MPM-120/230/380/440/575
19
Identificación
1. Terminales de entrada
Conecte el circuito trifásico a estos terminales
2. Terminales de salida
Conecte el control para la máquina protegida, o la alarma, a estos terminales
3. LEDs de fallo
Uno de ellos se ilumina para indicar el primer fallo detectado por el
microprocesador
4. LED normal
Éste se ilumina para indicar que la energía del circuito trifásico se encuentra
dentro de la tolerancia especificada
5. Ajuste del tiempo de retardo
Utilícelo a modo de ajustar la cantidad de retardo deseada para energizar el
reléde salida luego de determinarse que la energía se encuentra dentro de la
tolerancia especificada. (Consulte las Especificaciones para informarse sobre
otros tiempos de retardo fijos en la unidad)
6. Ajuste de tensión
Utilícelo para seleccionar la tensión de circuito nominal
7. Selector de modo
Utilícelo para seleccionar el modo Manual,
Auto/Rest., o Memoria. Estos modos se
explican más a fondo en la sección Funciones.
8. Diagramas de cableado
Muestra el estado de la alarma
(desenergizada) del reléde
salida CBB
789
10 11 12
COPPER,60/75°C WIRE ONLY
FREQ. SHIFT
UNDER
UNBAL
OVER
PHASE SHIFT/REV
MODE
AUTO/
RESET
MEMORY MANUAL
TMG
ØBØAØC
123456
NORMAL
TIME
DELAY VOLTAGE
ADJ.
654321
7 8 9 101112
3
45
6
7
1
8
2

20
Funciones
Los Monitores de fase controlados por microprocesador de Greenlee cuentan
con las siguientes funciones:
•Un microprocesador, que monitorea continuamente el circuito de entrada
para detectar fallos en el siguiente orden: Inversión de fase, cambio de fase
y pérdida de fase, desequilibrio de fase y cambio de frecuencia, baja tensión
y sobretensión. Aunque el circuito puede tener más de un fallo a la vez, sólo
un LED indicador de fallo se iluminaráal mismo tiempo.
•Un Ajuste del tiempo de retardo que le permite al usuario seleccionar la
cantidad de tiempo que transcurre entre estos dos eventos: (1) El momento
en que el microprocesador detecta que la energía de entrada es normal y (2)
el momento en que el microprocesador cambia el estado de los contactos
(abre los contactos NC y cierra los contactos NO).
•Un Ajuste de tensión que le permite al usuario seleccionar la tensión de
circuito nominal.
•Tres modos de operación:
Auto/Rest.:
Cuando el monitor de fase detecta que la energía de entrada es normal,
este modo cambia automáticamente el estado de los contactos y
restablece el LED indicador de fallo.
Manual:
Cuando el monitor de fase detecta que la energía de entrada es normal,
este modo no cambia el estado de los contactos ni restablece el LED
indicador de fallo. El usuario debe ajustar temporalmente el selector
de modo en Auto/Rest. hasta que el monitor de fase regrese a su
estado normal.
Memoria:
Cuando el monitor de fase detecta que la energía de entrada es normal,
este modo cambia automáticamente el estado de los contactos pero no
restablece el LED indicador de fallo. El usuario debe ajustar temporal-
mente el selector de modo en Auto/Rest. hasta que el LED indicador
de fallo se apague.
This manual suits for next models
4
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