Red Lion APMR User Manual

1

z PROTECTS AGAINST PHASE LOSS, UNBALANCE, UNDER

VOLTAGE, AND PHASE REVERSAL

z AVAILABLE IN 230, 380, OR 480 VAC

z LOW COST

z DIN RAIL MOUNTABLE

z INRUSH UNDER VOLTAGE DELAY

DESCRIPTION

The APMR protects three phase equipment, mostly motors, from destructive
line conditions. Specifically it detects Phase Reversal, Phase Loss, Phase
Unbalance and Low Voltage. All of these conditions, except for Phase Reversal,
produce excessive heating of motor windings, causing immediate or cumulative
damage to the motor. Phase Reversal will cause a motor to operate in the reverse
intended direction, possibly damaging machinery.

There are three models available; 230 VAC, 380 VAC, and 480 VAC. The
230 VAC model is used with 208, 220, 230, and 240 VAC rated equipment. The
380 VAC model is used with 380 and 415 VAC (European) equipment. The 480
VAC model is used with 440, 460, and 480 VAC rated equipment. The
electrical connection is three wire Delta or WYE configurations (no neutral
connection required).

The output is SPDT relay and LED. The relay is typically connected in series
with a motor contactor coil to inhibit motor start or to disconnect the motor in
the presence of a fault condition. The relay automatically resets when the fault
clears. The relay is typically used in a latching configuration so the motor has
to be restarted after the fault is cleared. The LED illuminates green when all
conditions are normal - no fault. When the LED is green, the relay is energized.
When a fault occurs, the LED turns red and the relay is de-energized. If phase
loss occurs on L1 or L3 the LED turns-off and the relay is de-energized.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

SPECIFICATIONS

1. POWER:

230 VAC: 185 min to 264 max, 3 VA (Typ)⇒Nominal is 185 to 240, 48 to 62 Hz.
380 VAC: 320 min to 457 max, 3 VA (Typ)⇒Nominal is 320 to 415, 48 to 62 Hz.
480 VAC: 380 min to 528 max, 3 VA (Typ)⇒Nominal is 380 to 480, 48 to 62 Hz.

2. OUTPUT: SPDT 10 A @ 240 VAC (resistive load); 1/2 HP @ 240 VAC
Response Time:

Phase Reversal: Not greater than 120 msec
Low Voltage: 0.1 to 20 sec, user adjustable
Phase Loss and Unbalance: Not greater than 100 ms

3. TEMPERATURE COEFFICIENTS:

Unbalance: ±0.5% Over temperature range
Undervoltage: ±200 PPM/°C

4. ENVIRONMENTAL CONDITIONS:
Operating Temperature: 0 to 55°C
Storage Temperature: -40 to 80°C
Operating and Storage Humidity: 85% max. relative humidity (non-

condensing) from 0°C to 50°C.

Altitude: Up to 2000 meters

5. ISOLATION BREAKDOWN RATING: 3000 V

6. CERTIFICATIONS AND COMPLIANCES:

SAFETY

UL Recognized Component, File # E137808, UL 508, CSA C22.2 No. 14
Recognized to U.S. and Canadian requirements under the Component

Recognition Program of Underwriters Laboratories, Inc.
IEC 61010-1, EN 61010-1: Safety requirements for electrical equipment

for measurement, control, and laboratory use, Part 1.

ELECTROMAGNETIC COMPATIBILITY

Refer to EMC Installation Guidelines for additional information.

7. MOUNTING: Universal mounting foot for attachment to standard DIN style
mounting rails, including top hat (T) profile rail according to EN50022 - 35
X 7.5 and 35 X 15, and G profile rail according to EN50035 - G32.

8. CONNECTION: Compression type terminal block

9. CONSTRUCTION: High impact black plastic case. Installation Category II,
Pollution Degree 2.

10. WEIGHT: 7.0 oz. (0.20 Kg)

MODEL APMR - 3 PHASE FAULT DETECTION DIN RAIL MODULE

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

DIMENSIONS In inches (mm)

Enclosure class AEN 55011RF interference

Emissions to EN 50081-2

Level 3; 10 V/mENV 50204

150 KHz - 80 MHz

Level 3; 10 V/rms EN 61000-4-6RF conducted interference

Level 3; 2 Kv power

Level 4; 2 Kv I/O EN 61000-4-4Fast transients (burst)

80 MHz - 1 GHz

Level 3; 10 V/m EN 61000-4-3Electromagnetic RF fields

Level 3; 8 Kv air

Level 2; 4 Kv contact EN 61000-4-2Electrostatic discharge

200 Hz, 50% duty cycle

Immunity to EN 50082-2

900 MHz ± 5 MHz

WARNING: 3 Phase Fault Detection Modules must never be used as

“Primary” protection against hazardous operating conditions. Machinery
must first be made safe by inherent design or the installation of guards,
shields, or other devices to protect personnel in the event of a hazardous
machine condition.

Simulation of cordless telephone

UL Recognized Component,
File # E137808

Bulletin No. APMR-E

Drawing No. LP0376

Released 2/07

Tel [phone]

Fax [phone]

www.redlion.net

2

5. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure. The
following EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VB3
Corcom #1VR3

Note: Reference manufacturer’s instructions when installing a line filter.

6. Long cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.

WIRING CONNECTIONS

All conductors should meet voltage

and current ratings for each terminal.
Also, cabling should conform to
appropriate standards of good
installation, local codes and regulations.
It is recommended that power supplied to
the unit be protected by a fuse or circuit
breaker. When wiring the unit, use the
number on the label to identify the
position number with the proper
function. Strip wire, leaving
approximately 1/4" (6mm) of bare wire
exposed. Insert the wire into the terminal,
and tighten the screw until the wire is
clamped tightly.

FUNCTION DESCRIPTIONS

PHASE UNBALANCE

Unbalance occurs in 3 phase systems when single phase loads are added
without regard to voltage effects on the remaining phases. This unbalance in
phase voltage causes excessive motor current producing temperatures in excess
of specifications. The relationship between voltage unbalance and percentage
of temperature rise is approximately the square of the percent voltage
unbalance times two. ie., - % temperature rise = (% unbalance2 X 2).

Therefore, a 4% voltage unbalance will result in approximately a 32%
increase in winding temperature. The effect of temperature rise is immediate
failure of winding insulation if unbalance is severe as with single phasing. If
unbalance is slight, gradual winding degradation will result in premature
insulation failure. The APMR will detect slight unbalances that thermal and
magnetic devices usually miss.

PHASE LOSS

Phase Loss is an extreme case of unbalance known as “single phasing”
where a total loss of one of the phases occurs. During this condition the motor
will continue to run and the full current is drawn from the remaining phases.
Unless the motor is lightly loaded motor failure will occur. The APMR will
detect Phase Loss even with regenerated voltages present.

PHASE REVERSAL

Reversing any two of the three phases will cause a motor to rotate opposite
the intended direction causing damage to machinery. Reversal can occur during
maintenance of distribution systems. The APMR will detect Phase Reversal
regardless of load conditions.

UNDERVOLTAGE

Undervoltage can occur during Brownouts, excessive system loading and
motor startups. An undervoltage Time Delay is provided with the undervoltage
detection to eliminate false tripping during startups when a motor draws many
times its operating current.

EMC INSTALLATION GUIDELINES

Although this unit is designed with a high degree of immunity to
ElectroMagnetic Interference (EMI), proper installation and wiring methods
must be followed to ensure compatibility in each application. The type of the
electrical noise, source or coupling method into the unit may be different for
various installations. Cable length, routing and shield termination are very
important and can mean the difference between a successful or a troublesome
installation. Listed below are some EMC guidelines for successful installation
in an industrial environment.

1. The unit should be mounted in a metal enclosure, that is properly connected

to protective earth.

a. If the bezel is exposed to high Electro-Static Discharge (ESD) levels,

above 4 Kv, it should be connected to protective earth. This can be done
by making sure the metal bezel makes proper contact to the panel cut-out
or connecting the bezel screw with a spade terminal and wire to
protective earth.

2. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail connection should be made as short as possible. The

connection point for the shield depends somewhat upon the application.

Listed below are the recommended methods of connecting the shield, in

order of their effectiveness.

a. Connect the shield only at the panel where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

3. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be run in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are long

and portable two-way radios are used in close proximity or if the installation

is near a commercial radio transmitter.

4. Signal or Control cables within an enclosure should be routed as far away as

possible from contactors, control relays, transformers, and other noisy

components.