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TM
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Follow safe electrical work practices.
See NFPA 70E in the USA, or applicable local codes.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Read, understand and follow the instructions before installing this product.
• Turn off all power supplying equipment before working on or inside the equipment.
• Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
• Only install this product on insulated conductors.
Failure to follow these instructions will result in death or serious injury.
A qualied person is one who has skills and knowledge related to the construction and
operation of this electrical equipment and the installation, and has received safety
training to recognize and avoid the hazards involved. NEC2009 Article 100
No responsibility is assumed by Veris Industries for any consequences arising out of the
use of this material.
DANGER
CURRENT MONITORING
INSTALLATION GUIDE
H540NS/548NS
VERIS INDUSTRIES, INC.
POR TLAN D, OREG ON USA
TOLL FREE USA 1.800.354.8556
TEL USA 1.503.598.4564
FAX USA 1.503.598.4664
CAUTION: Consult instructions
prior to installation
!
STATUS OUTPUT: 1A@30VAC/DC
RELAY COIL: 24VAC/DC; 16mA nom.
RELAY OUTPUT: 16(8)A@250VA C; 3/4 HP
548NS
RS
HAND
OC
OFF
AUTO
SO
SP
SC
CAUTION: Consult instructions
prior to installation
!
STATUS OUTPUT: 1A@30VAC/DC
RELAY COIL: 24VAC/DC; 16mA nom.
RELAY OUTPUT: 16(8)A@250VAC ; 3/4 HP
VERIS INDUSTRIES, INC.
POR TLAN D, OREG ON USA
TOLL FREE USA 1.800.354.8556
TEL USA 1.503.598.4564
FAX USA 1.503.598.4664
540NS
HAND
OFF
AUTO
RS
OC
SO
SP
SC
TM
540NS/548NS
Fractional HP Motor Status Sensor/
Command Relay
Installer’s Specifications
Amperage Range H540NS: 0.25 to 15 A; H548NS: 0.5 to 15 A
Frequency Range 50-60 Hz
Operating Temperature Range -15°C to 50°C (5° to 122°F)
Operating Humidity Range 0-95% non-condensing
Wire to Relay Contact s Use 12 AWG (3.3 mm
Terminal Block Torque Relay control ter minals: 3.5 in-lb (0.4 N-m)
All other terminals: 12 in-lb (1.35 N-m)
Relay:
Switching Capacity at 120 VAC 1 HP
Relay Outpu t SPST F.S. N.O. or N.C.
Relay Coil 24 VAC/DC; 36 mA nom
Current Sensor:
Sensor Supply Voltage Induced
Status Output Rating N.O. 1.0 A at 30 VAC/DC
Tri p Point H540NS: Fixed (on/o status); H548NS: Adjustable (belt loss detection)
Agency Approvals UL508, Installation Category III
* For current loads up to 10A, use 75°C rated wire insulation. For loads greater than 10A, use 90°C
rated wire insulation.
Specication Note: For CE compliance, insulate conductor a ccording to IEC 61010‑1:2001.
The product design provi des for basic insulation only.
2
) or larger wire*
NOTICE
• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classified locations.
• The installer is responsible for conformance to all applicable codes.
• Mount this product inside a suitable fire and electrical enclosure.
Dimensions
C
Wire
Opening
L
1.16"
(30 mm)
4.25"
(108 mm)
Wire
Opening
C
L
1.16"
(30 mm)
4.25"
(108 mm)
Z202763-0D PAGE 1 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07122
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.
1.53"
(39 mm)
quick install
1. Disconnect power sources prior to installation.
2. Remove the sensor lid and wire the command relay connections and relay controls
to the base.
3. Set the relay contact jumper.
4. This device has four wiring options, detailed on page 2-3 of this installation guide.
Choose the option appropriate to the application and follow instructions.
operation
The H540NS and H548NS devices combine a switching relay and a current status
sensor into a single housing. The device is connected in series between the power
source and the motor device, and the relay controls the on/o functioning of the
motor. The current switch trip point is xed at 0.25 A on the H540NS and adjustable
from 0.5 to 15 A in the H548NS. The maximum load is 15 A for both devices. The
H540NS and H548NS require no additional power source for operation.
Wire
Opening
C
L
2.13"
(55 mm)
Page 2
Wiring boarD
TM
H540NS/548NS
INSTALLATION GUIDE
4. Select one of the following mounting congurations (a, b, c, or d) to match your
installation.
1
2
1. Line current terminals:
Common
Normally Open
Normally Closed
2. 24 VAC/DC Relay
installation
Prior to installation, disconnect and lock out all power sources.
1. Open the device. Set aside the lid and the bag of hardware enclosed.
VERIS INDUSTRIES, INC.
PO RTLA ND, ORE GON US A
TOLL FREE USA 1.800.354.8556
RS
OC
TEL USA 1.503.598.4564
SO
FAX USA 1.503.598.4664
SP
SC
540NS
CAUTION: Consult instructions
prior to installation
!
STATUS OUTPUT: 1A@30VAC/DC
RELAY COIL: 24VAC/DC; 16mA nom.
RELAY OUTPUT: 16(8)A@250VAC; 3/4 HP
a.) duplex box:
Mounting slot
Connect line voltage wires
to line current terminals
Line Voltage
Wires
Mounting hole
Wire the 12 AWG lines from the controller through the back of the device, to
the line current terminals. Tighten line current terminal blocks to 12 in-lb
(1.35 N-m) torque.
Use the base as a template for mounting to the wall using the mounting hole
and slot shown.
b.) 4S junction box:
Mounting hole
Line Voltage
Wires
Connect line voltage wires
to line current terminals
2. Wire the 24 AC/DC relay control through the top hole of the device. Use only copper
conductors for command relay inputs. Tighten terminal blocks to 3.5 in-lb (0.4
N-m) torque. Keep wires away from the N. O. and N. C. jumper blocks.
Status Output & Relay Coil
(Low Voltage Wires Only)
24VAC/DC Relay Control /
Status Control
3. Wire the line current from the controller to the Common terminal. Wire the second
line to either the N. O. terminal or the N. C. terminal. The device is shown here as
wired to the N.O. block. Tighten line current terminal blocks to 12 in-lb (1.35 N-m)
torque.
Common
N.O. block
N.C. block
Mounting hole
Wire the 12 AWG lines from the controller through the back of the device, to
the line current terminals. Tighten line current terminal blocks to 12 in-lb
(1.35 N-m) torque.
Use the base as a template for mounting to the wall using the mounting holes
shown.
Z202763-0D PAGE 2 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07122
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.
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TM
Connect line voltage wires
H540NS/548NS
c.) surface mounting:
Connect line voltage wires
to line current terminals
Line Voltage
Wires
Wire the 12 AWG lines from the controller through the side of the device, onto
the line current terminals. Tighten line current terminal blocks to 12 in-lb
(1.35 N-m) torque.
d.) nipple mount to another enclosure:
INSTALLATION GUIDE
calibration (H548ns only)
Note: Testing the solid-state status output of this sensor with a digital ohmmeter
may yield inaccurate, but relative readings of switching (e.g. 6 MΩ) Use an analog
V-O-M for readings similar to loop values. Calibration to be done while motor is
running normally.
1. For under-current status indication: (Belt loss, fan & pump status)
• Turn the set point screw clockwise until the status closed LED goes out
and the status open LED comes on.
• Turn the set point screw counter-clockwise until the status open LED goes
out and the status closed LED comes on.
• Turn the set point screw 1/2 turn counter-clockwise.
• The sensor is now calibrated to provide indication of current ow below
normal full load amps.
Output Status:
Normal: Output closed
Alarm: Output open
Insert the conduit nuts (provided) into the slots in the side hole of the device
for additional weight support.
ENCLOSURE
Line voltage wires
Nipple to existing enclosure
(conduit nipple fitting not
provided)
to line current terminals
Wire the 12 AWG lines from the controller through the side of the device,
from the enclosure to the line current terminals. Tighten line current terminal
blocks to 12 in-lb (1.35 N-m) torque.
5. Use the knockout seal to cover any unused holes in the housing. Attach the cover,
securing with the screws provided.
2. For over-current status indication: (Locked rotor)
• Turn the set point screw counter-clockwise until the status open LED goes
out and the status closed LED comes on.
• Turn the set point screw clockwise until the status closed LED goes out
and the status open LED comes on.
• Turn the set point screw clockwise 1/2 turn
• The sensor is now calibrated to provide indication of current ows above
normal full load amps
Output Status:
Normal: Output open
Alarm: Output closed
NOTE: If a conduit is used, connect the conduit to the mounti ng hub before connecting it to
the device. Be sure to support the H540NS/548NS housing when nipple‑ mounted to another
enclosure, or the unit may shif t on opening, potentially causing undue stress on th e wiring and
the terminals.
Z202763-0D PAGE 3 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07122
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.
Page 4
TM
Wiring example
H540NS/548NS
INSTALLATION GUIDE
2
3
C
N.C.
N.O.
1
5
4
6
7
8
9
1. Power Terminal Block: Wire the H540NS/548NS in series with the motor using
these terminals. Choose N.O. or N.C.
Current Sensor: In-series current sensor for motor status.
2.
3.
Relay: Enables actuation of circuit by a control system.
4. Relay Coil Terminal Blocks: Wire the output signal from the control panel to
actuate the relay. 24 VAC/DC; 36 mA nominal.
5. Status Terminal Blocks: Wire the status input back to the control panel.
6. Relay Status LED: For positive indication of energized coil.
Status Open LED: Indicates that the current is below the trip point and the status
7.
contact is open (used to calibrate the current switch in H548NS models only).
8.
Current Switch Set-Point Screw: Used to adjust the point in the current range at
which the current switch will change states (used to calibrate the current switch
in H548NS models only).
9. Status Closed LED: Indicates that the current is above the trip point and the
status contact is closed (used to calibrate the current switch in H548NS models
only).
CAUTION!
Do not rely on status indicators to de termine whether or n ot the relay contacts are
connected to a power source. Doing so may result in i njury or death from electrical
shock.
If the connections to the unit a re made through more than one metallic conduit, bond
the conduits to prevent the hazard of elec tric shock. A bonding plate is available (Veris
pa rt AH10 ).
Z202763-0D PAGE 4 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07122
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other countri es.
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