Operation
12. Connect the output terminal wires to terminals 7-12 (see Wiring Diagram on the side of the relay or below).
13. When all connections are made, apply three-phase line-line voltage. The LED indicator should initially fl ash GREEN while the relay goes
through its restart delay or waiting for an external switch to be operated if in the Manual Reset mode and then illuminate solid GREEN
when all voltage conditions are correct.
14. If the LED does not illuminate solid GREEN during regular operation, a fault condition has occurred. REMOVE THREE-PHASE VOLTAGE,
and check for proper phase rotation, presence of all three phases, and low or high voltage conditions.
Use the LED Status Table on the
fi rst page or the Troubleshooting Guide below to determine exact cause of fault.
Correct if necessary. Re-energization is automatic
upon correction of the fault condition unless using MANUAL RESET, which requires opening the N.C. switch across terminals 4 and 5 to
reset the unit (see Step 5).
Troubleshooting
If the unit fails to operate properly, check that all connections are correct per the appropriate wiring diagram on the product. Check
Troubleshooting table below. If problems continue, contact Macromatic at 800-238-7474 or e-mail
tech-support@macromatic.com
for
assistance.
INSTALLATION
INSTRUCTIONS
PMD S
ERIES
T
HREE
-P
HASE
M
ONITOR
R
ELAY
W134 N5345 Campbell Drive
Menomonee Falls, WI 53051
800-238-7474
Fax 262-781-4433
www.macromatic.com
tech-support@macromatic.com
Warranty
All catalog-listed PMD Series products manufactured by Macromatic are warranted to be free from defects in workmanship or material
under normal service and use for a period of fi ve (5) years from date of manufacture.
Troubleshooting Guide
Typical Connections
(For Load Side connection, contact Macromatic)
Diagram 800
LED STATUS
SITUATION
SOLUTION
GREEN
Motor is not starting
Either (a) the relay is going through its POWER-UP/
RESTART delay and will energize the output
contacts when completed; or (b) the relay is in the
Manual Reset mode and waiting for an external
switch to be operated before energizing the output
contacts.
GREEN
Motor is not starting
The relay is in the run mode and working properly.
Either another control device is preventing the
motor from starting or all wiring should be checked.
NO INDICATION
Relay is not ener-
gized and/or motor
is not running
Verify L1, L2 and L3 (A, B & C) are connected to
terminals 1, 2 and 3. Measure the three line-to-line
voltages. If any of the voltages are below the spec-
ifi ed minimum operation voltage, the relay does not
have enough power to operate. Check to see why
operating voltage is low and correct.
RED
On power-up or with
motor running
The relay is sensing a phase reversal or phase
out-of-sequence (rotation) condition. REMOVE
THREE-PHASE VOLTAGE and switch any two
of the three line connections to ensure the phase
sequence (rotation) is correct.
RED
Either a phase loss
or voltage unbal-
ance condition
Make sure all three phases are present. Check for
a blown fuse or a loose or broken wire. Measure
all three line-line voltages and calculate the percent
unbalance—compare to UNBALANCE knob set-
ting. Determine why unbalanced condition exists
and correct it.
RED
Low voltage
(Undervoltage)
Measure the three line-to-line voltages. If the
average of these three voltages is below the
UNDERVOLTAGE TRIP knob setting, the relay has
tripped due to a low voltage condition. Check for
low voltage condition and correct it.
RED
High voltage
(Overvoltage)
Measure the three line-to-line voltages. If the
average of these three voltages is > 10% of the
VOLTAGE LINE-LINE knob setting, the relay has
tripped due to a over voltage condition. Check for
high voltage condition and correct it.
