ABB WVM Series User manual

Voltage
Monitors
Low Voltage Products & Systems 7.1
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
Phase Reversal
DIN Rail Mounting 3 Phase Voltage Monitors
1 Phase Voltage Monitor
DIN Rail Mounting 1 Phase Voltage Monitors
DIN Rail Mounting Motor Insulation Monitors
Selection Guide .................................................................................................................... 7.2
3 Phase Voltage Monitors
Low Volts, Phase Reversal
WVM ....................................................... 7.4
DLMU ..................................................... 7.6
HLMU ..................................................... 7.8
PLMU...................................................... 7.10
PLM ........................................................ 7.12
TVW ........................................................ 7.14
TVM ........................................................ 7.16
PLR......................................................... 7.18
PLS ......................................................... 7.20
CM-MPS
CM-PAS
CM-PSS
CM-PVS
CM-PFS
CM-PFE
CM-PVE
CM-PBE
Note:
Product pages are not included in
this catalog.
Go to: www.ssac.com/s7.pdf
Click on the Product Name
(ie: CM-MPS) to open the catalog
page.
[Adobe Acrobat Reader is required]
HLV............................................................. 7.22
KVM ........................................................ 7.25
CM-ESS.1............................ see Note above
CM-ESS.2............................ see Note above
CM-EFS ............................... see Note above
CM-ESS.M ..............................see Note above
Selection Guide .................... see Note above
CM-MSE............................... see Note above
CM-MSS............................... see Note above
CM-MSN............................... see Note above
Section 7
Voltage Monitors
Voltage Monitors

Voltage
Monitors
7.2 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
0702Sel 12.05.06
Three Phase
Functions and Features Page
WVM DLMU PLM PLMU PLR PLS HLMU TVM TVW HLV KVM
7.4 7.6 7.12 7.10 7.18 7.20 7.8 7.16 7.14 7.22 7.25
w/a = with adaptor; w/s = with socket v = Line Voltage adjustable on some models
! Phase loss protection for resistive and non-rotating loads. Motor protection can be affected by regenerated voltages.
For detailed product
specifications, refer to
catalog pages.
Single Phase
Selection Guide
Voltage Monitors
Series
General Features
DIN Rail Mounting w/a • w/s w/s w/s w/s w/a w/a w/a
Surface Mounting • • w/s w/s w/s w/s • • • • •
8-Pin Plug-In • • • •
Screw Terminals • • •
Quick Connects • • • •
Output
DPDT Relay(s) • •
SPDT Relay • • • • • • • • •
SPST-NO
Line V Connection
Wired Phase-to-Phase • • • • • • • • •
Universal Voltage • • •
Phase-to-Neutral • •
Single Phase • •
Trip Point(s) Adjustable • • • • • • v •
Trip Point(s) Fixed • • • • •
Supply Voltage Required
Protection
Phase Loss :• • • • • • • •
Motor Operating • • • • • • •
Motor Start Up Only (!) •
Undervoltage • • • • • • • • • •
Overvoltage • • • • • •
Unbalance (Asymmetry) • • • • • • •
Rapid Recycling • • • • • • •
Phase Sequence • • • • • • • • •
Time Delays & Reset
Trip Delay • • • • • • • •
Restart Delay • • • • • • •
Automatic Restart • • • • • • • • • • •
Manual Reset •
Indicator LED(s)
Output ON/OFF • • • • • • • • •
Supply ON/OFF • • • • • •
Fault(s) • • • • • • •
Timing • • • • • • •
Dimensions 3 x 2 x 1.5
76.7 x 51.3 x 38.1
2 x 2 x 1.21
50.8x 50.8x 30.7
2.0 x 2.0 x ≤1.5
50.8 x 50.8 x ≤38.1
3 x 2 x 1.64
76.7 x 51.3 x 41.7
1.78 x 2.39 x ≤3.2
45.2 x 60.7 x ≤81.3
1.97 x 2.95 x 4.33
50 x 75 x 110
4.4 x 6.9 x 2.4
111.8 x 175.3 x 61
in
mm

Voltage
Monitors
Low Voltage Products & Systems 7.3
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
0703Sel 12.05.06
Selection Guide
Voltage Monitors
Functions and Features
CM- CM- CM- CM- CM- CM- CM-
PAS PVS PSS PFS PBE PFE PVE
Three Phase Single Phase
in
mm
0.89 x 3.07 x ≤3.98
22.5 x 78 x ≤101
w/a = with adaptor; w/s = with socket; h = hysteresis
! Phase loss protection for resistive and non-rotating loads. Motor protection can be affected by regenerated voltages.
CM-EFS CM-ESS.2 CM-ESS.M
CM-ESS.1
CM-
MPS
Product pages are not included in this catalog. Go to: www.ssac.com/sg71.pdf. Click on the Product Name (i.e. CM-MPS)
Series
General Features
DIN Rail Mounting • • • • • • • • • • •
Surface Mounting w/a w/a w/a w/a w/a w/a w/a w/a w/a w/a w/a
8-Pin Plug-In
Screw Terminals • • • • • • • • • • •
Quick Connects
Output
DPDT Relay(2 SPDT) • • • • • • ESS.2 •
SPDT Relay • • ESS.1
SPST-NO • •
2 SPDT (Independent) • •
Normal Status Energized Energized Energized Energized Energized Energized Energized Energized Selectable De-energized Selectable
Line V Connection
Wired Phase-to-Phase • • • 380 or 400 • • • •
Universal Voltage (500VAC Max) • • • 200-500 208-440
Phase-to-Neutral • • •
Single Phase • 24-240VAC 24 -240 VAC 24 - 240 VAC
Trip Point(s) Adjustable • • • • • ESS.2 •
Trip Point(s) Fixed • • • •
Supply Voltage Required • • • •
Protection
Phase Loss: • • • • • • • •
Motor Operating • •
Motor Start Up Only (!) • • • • • •
Undervoltage • • • • • • • •
Overvoltage • • • • • • •
Unbalance (Asymmetry) • •
Voltage Window •
Phase Sequence • • • • • •
Time Delays & Reset
Trip Delay • • • • • • • ESS.2 •
Restart Delay • h • • h h h
Automatic Restart • • • • • • • • • • •
Latching Output • •
Indicator LED(s)
Output ON/OFF • • • • ON ON ON ON • • •
Supply ON/OFF • • • • • • •
Fault(s) • • • • OFF OFF OFF OFF • • •
Timing • • • • • • •
Dimensions
0.89 x 3.07 x ≤3.98
22.5 x 78 x ≤101
0.89 x 3.07 x 3.09
22.5 x 78 x 78.5

Voltage
Monitors
7.4 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
Description
The WVM Series provides protection against premature equipment (motor) failure caused by voltage faults on
the 3 Phase Line. The WVM’s microcontroller design provides reliable protection even if regenerated voltages
are present. It combines dependable fault sensing with a 10 fault memory and a 6 LED status display. Part
instrument, part control, the WVM protects your equipment when you’re not there and displays what happened
when you return. The WVM is fully adjustable and includes time delays to prevent nuisance tripping and
improve system operation. Time delays include a 0.25 to 30 s adjustable trip delay, an adjustable 0.25 to 64
m (in 3 ranges) restart delay, plus a unique 3 to 15 s true random start delay. The random start delay prevents
voltage sags caused by simultaneous restarting of numerous motor loads after a power outage.
Operation
The output relay is energized when all conditions
are acceptable and the WVM is reset. A restart
and/or random start delay may occur before the
output relay is energized.
Protects Against: Phase
Loss & Reversal; Over,
Under & Unbalanced
Voltages; Short Cycling
10 Fault Memory & Status
Displayed on 6 LED Readout
Switch Selectable Automatic
Restart, Delayed Automatic
Restart, & Manual Reset
Isolated 10 A SPDT Relay
Contacts
Approvals:
3 Phase Voltage Monitor
WVM Series
Motor Protector
Example P/Ns:
WVM
X
–6- 200 ... 240 V AC
–8- 355 ... 425 V AC
–9- 400 ... 480 V AC
–0- 500 ... 600 V AC
3 Phase Line Voltage
X
–1 - 2 ... 10%
X
–1 - 0.25 ... 30 s
Unbalance Trip Delay
X
–A- Switch Selectable:
Automatic Restart Upon Fault Trip
–R- Switch Selectable:
Automatic Restart Upon Fault
Correction
X
–L- 0.25 ... 64 s
–N- 6 ... 300 s
–H- 0.25 ... 64 m
Reset Method Restart Delay
WVM011AL,
WVM911AL-60 (No Random Restart Delay)
Field Adjustment: Select the line voltage listed
on the motor’s name plate. This automatically sets
the over and under voltage trip points. Consult the
equipment’s manufacturer specifications for the
correct trip delay, unbalance percentage, and restart/
reset operation and restart delay. Make connection
to all three line phases as shown in the connection
diagram. Apply power. If the relay fails to energize,
view the LEDs for the cause, and correct the problem.
If the phase sequence is incorrect, swap any two
wires. No further adjustment should be required to
achieve maximum equipment protection.
Read Memory: Fault(s) stored in the memory
are indicated when the yellow LED is flashing. To
read memory, rotate selector from Manual to Read
Memory. The last fault will be displayed. Repeat this
operation to read the second to the last fault. Repeat
until up to 10 faults are noted.
Memory Reset: To clear the memory of all
faults stored, rotate selector to Clear Memory
for 5 seconds. The yellow LED will turn off.
Memory Overload: The 11th fault causes the
first to be removed from memory. Only the 10
most recent faults are retained.
Random Start Delay: A new 3 to 15 s random start
delay is selected by the microcontroller when a fault
is corrected and when the operating voltage (L1, L2,
L3) is applied to the WVM. A random start delay does
not occur when the reset is manual.
Automatic Restart: Upon fault correction, the output
will re-energize after a random start delay.
Automatic Restart Upon Fault Trip: When a fault is
sensed for the full trip delay, the output de- energizes
and a restart delay is initiated. This delay locks out
the output for the delay period. Should the fault be
corrected by the end of the restart delay, the output
will re-energize after a random start delay. A restart
delay will also occur when operating voltage (L1, L2,
L3) is applied to the WVM.
Manual Reset: After a fault condition is corrected,
the WVM can be manually reset. There are two
methods; a customer supplied remote switch, or the
onboard selector switch.
Manual Reset (Onboard): Rotate selector switch
from the Manual Reset position to Auto Restart
w/ Delay then back again to Manual Reset within 3
seconds. The output will immediately energize.
Remote Reset: Reset (Restart) is accomplished
by a momentary contact closure across terminals 1
& 2. The output will immediately energize. Remote
switch requirements are ≥10 mA at 20 V DC and the
reset terminals are not isolated from line voltage. A
resistance of ≤20KΩacross terminals 1 & 2 will
cause immediate automatic restart.
Automatic Restart Upon Fault Correction:
(P/N includes an R)
When a fault is sensed for the full trip delay, the output
relay de-energizes. Upon correction of the fault, a
restart delay begins. At the end of this delay, the
output will re-energize after a random start delay. If
a fault occurs during restart timing, the restart time
delay will be reset to zero, and the output will not
energize until the restart delay is completed.
-60 Option: Add the suffix -60 to any automatic
restart part number to remove the Random Start
Delay feature. See example P/N‘s below.
Connection
F = Fuses
NO = Normally Open
NC = Normally Closed
RS = Optional Remote Reset Switch
CAUTION:
2 amp max fast acting
fuses must be installed
externally in series with
each input. (3)
Series
Relay contacts are isolated.
Dashed lines are internal
connections.
ASME A17.1 rule 210.6
NEMA MG1 14:30, 14:35
IEEE C62.41-1991 Level B
ANSI Device #27/47/59
Listed
WVM02B01 12.13.06

Voltage
Monitors
Low Voltage Products & Systems 7.5
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
Technical Data
3 Phase Voltage Monitor
WVM Series
Motor Protector
Accessories
DIN rail P/Ns:
017322005 (Steel)
C103PM (Al)
Mechanical View
Inches (Millimeters)
3-phase fuse
block/disconnect
P/N: FH3P
2 AMP fuse
P/N: P0600-11
Line Voltage
Type 3 phase Delta or Wye with no connection to neutral
Operating Voltage Adjustment Range
240 V AC 200 ... 240 V AC
380 V AC 355 ... 425 V AC
480 V AC 400 ... 480 V AC
600 V AC 500 ... 600 V AC
Frequency 50 ...60 Hz
Overvoltage, Undervoltage, &
Voltage Unbalance
Overvoltage Trip Point 109 ... 113% of adjusted voltage
Reset Voltage -2% of trip point
Undervoltage Trip Point 88 ... 92% of adjusted voltage
Reset Voltage +2% of trip point
Voltage Unbalance Adjustable from 2 ... 10%
Trip Delay Adjustable from 0.25 ... 30 s +/-15%
Phase Loss ≥ 15% unbalance
Response Time ≤ 200 ms
Random Start Delay Range 3 ... 15 s
Reset (Restart) Delay
Low Range 0.25 ... 64 s +/-15%
Normal Range 6 ... 300 s +/-15%
High Range 0.25 ... 64 m +/-15%
Fault Memory
Type Nonvolatile RAM
Capacity Stores last 10 faults
Status Indicators 6 LEDs provide existing status & memory readout
Note: 50% of operating line voltage must be applied to L1 & L2 for operation of status indicators
Output
Type Electromechanical relay
Form Isolated single pole double throw (SPDT)
Rating 10 A resistive @ 250 V AC; 6 A inductive (0.4 PF) at 250 V AC
Protection
Surge IEEE 62.41-1991 Level B
Isolation Voltage ≥ 2500 V RMS input to output
Mechanical
Mounting Surface with 2 or 4 #8 (M4 x 0.7) screws
Termination Screw terminals with captive wire clamps for up to #12 AWG ( 3.2 mm2) wire
Environmental
Operating/Storage Temperature -40°C ... +65°C / -40°C ... +85°C
Weight ≅ 25 oz ( 709 g)
2 1.8
3 2.7
4 3.6
5 4.5
6 5.4
7 6.3
8 7.2
9 8.1
10 9
Selected Unbalance % Reset %
Reset on Balance
WVM02B01 07.31.07

Voltage
Monitors
7.6 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
Accessories
Description
Preliminary Data Sheet - Available 1st Quarter 2008
The DLMU Series is a universal voltage, 3 Phase Voltage Monitor. It continuously measures the voltage of each
of the three phases with microcontroller accuracy and compares the value to preset trip points. It separately
senses Phase Reversal, Over, Under and Unbalanced voltages including Phase Loss and over or under frequency.
Protection is assured during periods of large average voltage uctuations, or when regenerated voltages are
present. The unit trips within 200 ms when phase loss is detected. Adjustable time delays are included to
prevent nuisance tripping and short cycling of sensitive equipment. The 10A isolated SPDT and 2A alarm output
relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage
unbalance, and time delays are knob adjustable. The phase loss set point and the acceptable frequency range
are xed. Both Delta and Wye systems can be monitored; no connection to neutral is required.
Operation
Upon application of line voltage, the output is de-energized
and the restart delay begins. If all the three phase voltages
are within the acceptable range, the output energizes at
the end of the restart delay. The microcontroller circuitry
automatically senses the voltage range, and selects the
correct operating frequency (50 or 60hz). The over and
under voltage trip points are set automatically. When the
measured value of any phase voltage exceeds the accept-
able range limits (lower or upper) the trip delay begins. At
the end of the trip delay the output relay de-energizes. If the
phase voltage returns to an acceptable value before the trip
delay expires, the trip delay is reset and the output remains
energized. Under, over, and unbalanced voltages plus over
or under frequency must be sensed for the complete trip
delay before the unit trips. The unit trips in 200 ms when
phase loss or reversal are sensed. The unit will not energize
if a fault is sensed as the line voltage is applied.
Reset: Reset is automatic upon correction of the voltage
or frequency fault or phase sequence.
See accessory pages for
specications.
DLMU2BOP 12.11.07
Universal 3 Phase Voltage Monitor
DLMU Series (SPDT & N.O. or N.C.)
Motor Protector
Connection
3-phase fuse
block/disconnect
P/N: FH3P
2 Amp Fuse
P/N: P0600-11
ANSI Device #27/47/59
Ordering Table
Example P/N:
–U- 200... 480 V AC
–H- 500... 600 V AC
–A- Adjustable 2 ... 10%
Fixed: Specify Unbalance
2 ...10% in 1% increments
using two digits [ 04 ]
–A- Adjustable 1...30s
Fixed: Specify delay
1... 30 s in 1s increments,
using two digits [ 20 ]
DLMUBLAAA = 200 ... 480 V, SPDT & N.O., Lockout Function Delay, Adjustable Unbalance, Trip and Restart Delay
DLMUBRAAA = 200 ... 480 V, SPDT & N.O., Restart Delay on fault correction, Adjustable Unbalance, Trip and Restart Delay
DLMUCNAAN = 200 ... 480 V, SPDT & N.C., No Restart Delay, Adjustable Unbalance and Trip Delay
DLMUCL0420A = 200 ... 480 V, SPDT & N.C., Lockout Function, 4% Unbalance, 20 s Trip Delay, Adjustable Restart Delay
LED Operation
The LED ashes green during the restart delay, then
glows green when the output energizes. It ashes
red during the trip delay then glows red when the
output de-energizes. It ashes red/green if phase
reversal is sensed If a fault is sensed during the
restart delay, the LED will glow red during that
portion or the full restart delay.
LED Flashing Table
Output Restart Delay
–A- Adjustable*
0.6 ...300 s
–N - No Restart
Delay
– B - SPDT & N.O.
– C - SPDT & N.C.
Trip Delay
Restart Delay
Phase Reversal
120 FPM
60 FPM
120 FPM
Red
Green
Red/Green
ON/OFF
ON/OFF
Alternate
FPM = Flashes per minute
Line Voltage Voltage Unbalance
–L- Lockout,
Min Off Time
–R- Staggered Restarting
–N- No Restart Delay
DLM
Series
Restart Delay Options:
L= Lockout or minimum OFF time. The restart
delay begins when the output trips. The unit cannot
be re-energized until the restart delay is complete.
This provides a minimum off time or lockout time
to allow equipment sensitive to short cycling, time
to reset. If the fault is corrected after the restart
delay is complete the output energizes immediately.
The restart delay also occurs when line voltage is
applied/reapplied.
R= Restart Delay on fault correction. The restart
delay begins when line voltage is reapplied or
when a voltage fault is corrected. This option is
normally selected when staggered restarting of
multiple motors on a power system is required.
N= No Restart Delay. 0.6 second initialization
delay on application of line voltage applies.
Restart Notes:
All restart options remain reset when the following
conditions are detected:
1.) Phase Loss (phase unbalance greater
than 25%)
2.) Average Line Voltage less than 120VAC
3.) Phase Reversal
The restart delay begins when the condition is
corrected.
Protects Against: Phase
Loss, Phase Reversal, Over,
Under and Unbalanced
Voltages, Over/Under
Frequency
35 mm DIN Rail or Surface
Mounting
SPDT Isolated 10A Relay
Contact
N.O. or N.C. SPST Isolated
2A Relay Contact
LED Indicates: Relay, Faults,
& Time Delays
Universal Line Voltage
240 ... 480 V AC in One Unit
600 V AC Version Available
3 Wire Connection for
Delta or Wye Systems
ASME A17.1 rule 210.6
NEMA MG1 14:30, 14:35
IEEE C62.41-1991 Level B
Approvals:
DIN rail P/Ns:
017322005
Restart Function Trip Delay
XXXXXX
Note: * Selection
“A” is only
available for L
or R restart
functions
L1, L2, L3 = Line Voltage Input
NO = Normally Open Contact
NC = Normally Closed Contact
C = Common, Transfer Contact
CAUTION: 2 amp max. fast acting fuses are
recommended to protect the equipment‘s wiring.
They are not required to protect the DLMU.
!
! = Select alarm contact
connection as N.O. or N.C.
when ordering; N.O. Shown.
Dashed lines are internal
connections

Voltage
Monitors
Low Voltage Products & Systems 7.7
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
Technical Data
Universal 3 Phase Voltage Monitor
DLMU Series (SPDT & N.O. or N.C.)
Motor Protector
Mechanical View
DLMU2BOP 12.11.07
Line Voltage
Type 3 phase Delta or Wye with no connection to neutral
Operating Voltage 200 ... 480 V AC Range Voltage Adjustment Range Line Frequency Line Voltage Max.
600 V AC
Line Frequency 50 or 60 Hz Automatically detected
Phase Loss ≥25% Unbalance
Response Time ≤200ms
Undervoltage and Voltage Unbalance
Type Voltage detection with delayed trip & automatic reset
Overvoltage: 109 to 113% of the adjusted line voltage
≅-3% of the trip voltage
Undervoltage: 88 ... 92% of the adjusted line voltage
≅+3% of the trip voltage
Voltage Unbalance: Adjustable 2 ... 10%; or specify xed unbalance of 2 ... 10% in 1% increments
≅-0.7% Unbalance
Trip Delay Over/Undervoltage, Voltage Unbalance, Over/Under Frequency
Adjustable from 1 ... 30 s; or specify xed delay 1 ... 30 s in 1 s increments
± 15%
Restart Delay Adjustable from 0.6 ... 300 s; if no restart delay is selected a 0.6 s initialization delay applies
± 15%
Over/Under Frequency ±4%; Reset ±3%; 50 or 60 Hz
Phase Sequence A, B, C, L1, L2, L3
Response Time
-Phase Reversal & Phase Loss ≤200 ms
Reset Automatic
Output
Type Isolated Electromechanical Relay
Control Contact Form Single pole double throw (SPDT) (1 c/o)
Rating 10 A resistive at 240 V AC; 8 A resistive at 277 V AC; N.O-1/4 hp at 120 V AC; 1/3 hp at 240 V AC
Alarm Contact Form N.O. or N.C. SPST (selected in part number)
Rating 2 A resistive at 240 V AC
Life Mechanical -- 1 x 106
Electrical -- 1 x 303
Protection
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥2500 V RMS input to output
Mechanical
Mounting Surface mount with 2 #8 (M4 x 0.7) screw or snap on 35mm DIN Rail
Note: 0.25 in.(6.35 mm) spacing between units or other devices is required
Package 4.33 x 2.95 x 1.97 in. (110 x 75 x 50 mm)
Termination Screw terminals with captive wire clamps for up to #14 AWG (2.5 mm2) wire
IP 20 Touch Proof with removable covers installed
Environmental
Operating Temperature -40°C ... +60°C
Storage Temperature -40°C ... +85°C
Humidity 95% relative, non-condensing
Weight ≅8.6 oz (244 g)
240 200 ... 240 V AC 50 or 60 Hz
380 340 ... 420 V AC 50 Hz
480 400 ... 480 V AC 60 Hz 550 V AC
600 500 ... 600 V AC 50 or 60 Hz 600 V AC
Trip Voltage
Reset Voltage
Trip Voltage
Reset Voltage
Trip Set Point
Reset on Balance
Active On
Range
Tolerance
Range
Tolerance
Trip / Reset
RC
RC
Inches (Millimeters)
RC = Removable Terminal Cover (2)

Voltage
Monitors
7.8 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
Accessories
Description
The HLMU Series is a universal voltage, encapsulated, 3 Phase Voltage Monitor. It continuously measures the
voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points.
It separately senses Phase Reversal, Over, Under and Unbalanced voltages including Phase Loss and over or
under frequency. Protection is assured during periods of large average voltage uctuations, or when regener-
ated voltages are present. The unit trips within 200 ms when phase loss is detected. Adjustable time delays are
included to prevent nuisance tripping and short cycling of sensitive equipment. The 10A isolated DPDT output
relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage
unbalance, and time delays are knob adjustable. The phase loss set point and the acceptable frequency range
are xed. Both Delta and Wye systems can be monitored; no connection to neutral is required.
Operation
Upon application of line voltage, the output is de-
energized and the restart delay begins. If all the three
phase voltages are within the acceptable range, the
output energizes at the end of the restart delay. The
microcontroller circuitry automatically senses the volt-
age range, and selects the correct operating frequency
(50 or 60hz). The over and under voltage trip points
are set at +/- 10% of the adjusted line voltage. When
the measured value of any phase voltage exceeds the
acceptable range limits (lower or upper) the trip delay
begins. At the end of the trip delay the output relay
de-energizes. If the phase voltage returns to an accept-
able value before the trip delay expires, the trip delay
is reset and the output remains energized. Under, over,
and unbalanced voltages plus over or under frequency
must be sensed for the complete trip delay before the
unit trips. The unit trips in 200 ms when phase loss or
reversal are sensed. The unit will not energize if a fault
is sensed as the line voltage is applied.
Reset: Reset is automatic upon correction of the volt-
age or frequency fault or phase sequence.
See accessory pages for
specications.
HLM02B01 5.15.07
Protects Against: Phase
Loss, Phase Reversal,
Over, Under & Unbalanced
Voltages, Over/Under
Frequency
Encapsulated Circuitry
DPDT Isolated 10 A Contacts
LED Indicates Relay Status,
Faults, & Time Delays
Universal Line Voltage
200 ... 480 V AC in One Unit
Compact, Encapsulated
Design
Finger-Safe Terminal
Blocks, up to 12 AWG
ASME A17.1 rule 210.6
NEMA MG1 14:30, 14:35
IEEE C62.41-1991 Level B
Approvals:
Universal 3 Phase Voltage Monitor
HLMU Series (DPDT)
Motor Protector
Connection
3-phase fuse
block/disconnect
P/N: P0700-241
2 Amp Fuse
P/N: P0600-11
CAUTION: 2
amp max. fast
acting fuses are
recommended
to protect the
equipment‘s wir-
ing. They are not
required to pro-
tect the HLMU.
Restart Function
ANSI Device #27/47/59
Ordering Table
Example P/N:
–A - Adjustable 2 ... 10%
Fixed: Specify Unbalance
2 ...10% in 1% increments,
using 2 digits [04]
–A - Adjustable 1...30 s
Fixed: Specify delay
1 ... 30 s in 1 s
increments, using
2 digits, [05]
HLMUDLAAA = 200 ... 480 V, DPDT, Lockout Restart, Adjustable Unbalance, Trip and Restart Delay
HLMUDNAAN = 200 ... 480 V, DPDT, No Restart Delay, Adjustable Unbalance and Trip Delay
HLMUDRAAA = 200 ... 480 V, DPDT, Staggered Restart, Adjustable Unbalance, Trip and Restart Delay
HLMUDL0405A = 200 ... 480, DPDT, Lockout Restart, Fixed Unbalance 4%, Fixed Trip Delay 5 Seconds, Adjustable Restart
LED Operation
The LED ashes green during the restart delay, then
glows green when the output energizes. It ashes red
during the trip delay then glows red when the output
de-energizes. It ashes red/green if phase reversal is
sensed. If a fault is sensed during the restart delay,
the LED will glow red during that portion or the full
restart delay.
LED Flashing Table
Output Restart Delay
–A - Adjustable 0.6 ...300 s 1
–N - No Restart Delay
–D - DPDT
Trip Delay
Restart Delay
Phase Reversal
120 FPM
60 FPM
120 FPM
Red
Green
Red/Green
ON/OFF
ON/OFF
Alternate
FPM = Flashes per minute
L1, L2, L3 = Line Voltage Input
NO = Normally Open Contact NC = Normally Closed Contact
C = Common, Transfer Contact
Note: Relay contacts are isolated, 277 V AC max.
Voltage Unbalance
–L- Lockout, Min Off Time
–R - Staggered Restarting
–N - No Restart Delay
HLMU
Series
Restart Delay Options:
L= Lockout or minimum OFF time. The restart
delay begins when the output trips. The unit cannot
be re-energized until the restart delay is complete.
This provides a minimum off time or lockout time to
allow equipment sensitive to short cycling, time to
reset. If the fault is corrected after the restart delay
is complete, the output energizes immediately.
The restart delay also occurs when line voltage is
applied/reapplied.
R= Restart Delay on fault correction. The restart
delay begins when line voltage is reapplied or
when a voltage fault is corrected. This option is
normally selected when staggered restarting of
multiple motors on a power system is required.
N= No Restart Delay. 0.6 second initialization
delay on application of line voltage applies.
Restart Notes:
All restart options remain reset when the following
conditions are detected:
1.) Phase Loss (phase unbalance greater
than 25%)
2.) Average Line Voltage less than 120VAC
3.) Phase Reversal
The restart delay begins when the condition is
corrected.
Trip Delay
XXX X X
DIN rail P/Ns:
017322005 (Steel)
C103PM (Al)
DIN rail adaptor
P/N: P1023-20
→
←
1 Selection “A” is only available for
Restart functions “L” and “R”

Voltage
Monitors
Low Voltage Products & Systems 7.9
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com 1TRC 001 009 C0202
Technical Data
Universal 3 Phase Voltage Monitor
HLMU Series (DPDT)
Motor Protector
Mechanical View
HLM02B01 11.21.06
Inches (Millimeters)
-Hole for Mounting with One #10 (M4 x 0.7) Screw
Cover Detail
Knobs & Dials
(Fully adjustable
Part Numbers)
Line Voltage
Type 3 phase Delta or Wye with no connection to neutral
Operating Voltage 200 ... 480 V AC Range Voltage Adjustment Range Line Frequency
Line Voltage Max. 550 V AC
Line Frequency 50 or 60 Hz Automatically detected
Phase Loss ≥25% Unbalance
Response Time ≤200ms
Undervoltage and Voltage Unbalance
Type Voltage detection with delayed trip & automatic reset
Overvoltage: 109 to 113% of the adjusted line voltage
≅ -3% of the trip voltage
Undervoltage: 88 ... 92% of the adjusted line voltage
≅ +3% of the trip voltage
Voltage Unbalance: Adjustable 2 ... 10%; or specify fixed unbalance of 2 ... 10% in 1% increments
≅-0.7% Unbalance
Trip Delay Over/Undervoltage, Voltage Unbalance, Over/Under Frequency
Adjustable from 1 ... 30 s; or specify fixed delay 1 ... 30 s in 1 s increments
± 15%
Restart Delay Adjustable from 0.6 ... 300 s; if no restart delay is selected a 0.6 s initialization delay applies
± 15%
Over/Under Frequency ±4%; Reset ±3%; 50 or 60 Hz
Phase Sequence A, B, C, L1, L2, L3
Response Time-Phase Reversal
& Phase Loss ≤200 ms
Reset Automatic
Output
Type Isolated Electromechanical Relay
Form Double pole double throw (DPDT)
Rating 10 A resistive at 240 V AC; 8 A resistive at 277 V AC; N.O-1/4 hp at 120 V AC; 1/3 hp at 240 V AC;
Life Mechanical -- 1 x 106
Electrical -- (at 10 A) -- DPDT = 1 x 303
Protection
Surge IEEE C62.41-1991 Level B
Isolation Voltage ≥2500 V RMS input to output
Circuitry Encapsulated
Mechanical
Mounting Surface mount with one #10 (M5 x 0.7) screw
Note: 0.25 in.(6.35 mm) spacing between units or other devices is required
Package 3 x 2 x 1.5 in. (76.7 x 51.3 x 41.7 mm)
Termination Screw terminal connection for up to 12 AWG (3.3 mm2) wire
Environmental
Operating Temperature -40°C ... +60°C
Storage Temperature -40°C ... +85°C
Humidity 95% relative, non-condensing
Weight ≅3.9 oz (111 g)
240 200 ... 240 V AC 50 or 60 Hz
380 340 ... 420 V AC 50 Hz
480 400 ... 480 V AC 60 Hz
Trip Voltage
Reset Voltage
Trip Voltage
Reset Voltage
Trip Set Point
Reset on Balance
Active On
Range
Tolerance
Range
Tolerance
Trip / Reset

Voltage
Monitors
7.10 Low Voltage Products & Systems
1TRC 001 009 C0202 ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
Accessories
Description
The PLMU Series continuously measures the voltage of each of the three phases to provide protection for
three phase motors and sensitive loads. Its microcontroller senses under and over voltage, voltage unbalance,
phase loss, and phase reversal. Protection is provided even when regenerated voltages are present. Universal
voltage operation and standard base connection allows the PLMU to replace hundreds of competitive part
numbers.
Operation
Upon application of power, a 0.6 s random start delay
begins and the PLMU measures the voltage levels
and line frequency and selects the voltage range. The
output relay is energized and the LED glows green when
all voltages are acceptable and the phase sequence
is correct. LED flashes green during trip delay,
glows red when output de-energizes. Undervoltage,
overvoltage, and voltage unbalance must be sensed
for continuous trip delay before the relay de-energizes.
Re-energization is automatic upon fault correction.
The output relay will not energize if a fault condition is
sensed as three phase input voltage is applied. Line
voltage is selected with the knob, setting the over and
under voltage trip points. Voltage range is automatically
selected by the microcontroller.
See accessory pages for
specifications.
Protects Against: Phase Loss,
Phase Reversal, Overvoltage,
Undervoltage,
& Unbalanced Voltages
Octal Plug-in with SPDT
Isolated 10 A Contacts
Operates from 200 ... 480 V AC
LED Indicator Glows Green
when Voltages are
Acceptable, Red for Faults
Simple 3-Wire Connection for
Delta or Wye Systems
ASME A17.1 rule 210.6
NEMA MG1 14:30, 14:35
IEEE C62.41-1991 Level B
Approvals:
3 Phase Voltage Monitor
PLMU Series
Universal Plug-in Monitor
Connection
F = Fuses
ØA = Phase A = L1
ØB = Phase B = L2
ØC = Phase C = L3NO = Normally Open
NC = Normally Closed
Relay contacts are isolated. Dashed lines are
internal connections.
Panel mount kit
P/N: BZ1
Octal 8 pin socket
P/N: OT08PC
3-phase fuse
block/disconnect
P/N: P0700-241
2 AMP fuse
P/N: P0600-11
DIN rail P/Ns:
017322005 (Steel)
C103PM (Al)
Part NumberVoltage Unbalance Trip Delay
Adjustable 2 ... 10% PLMU11Adjustable 0.25 ... 30 s
Available with Fixed Unbalance and Trip Delay
Faceplate View
2 Amp
Fast Acting
Fuses
Recommen-
ded For Safety
(Not Required)
ANSI Device #27/47/59
Ordering Table
PLMU2B01 06.08.04