Veris Industries H906 User manual

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.

• Product may use multiple voltage/power sources. Disconnect ALL sources before
servicing.

• Use a properly rated voltage sensing device to confirm that power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION.

• Current transformer secondaries must be shorted or connected to a burden at all times.

• Products rated only for basic insulation must be installed on insulated conductors.

• Replace all doors, covers and protective devices before powering the equipment.

Failure to follow these instructions will result in death or serious injury.

A qualied person is one who has skills and knowledge related to the construction and
operation of this electrical equipment and installations, and has received safety
training to recognize and avoid the hazards involved. NEC Article 100

No responsibility is assumed by Veris Industries for any consequences arising out of the
use of this material.

DANGER

Installation Guide

Current Monitoring

*

TM

TM

H906

Split-Core Current Switch, Adjustable Trip Point,

N.C. Status Output

Product Overview

The H906 is a current-sensitive switching device that monitors current (amperage) in the conduc tor passing
through it. A change in amperage in the monitored conductor that crosses the switch (setpoint) threshold plus the
hysteresis value causes the resistance of the FET status output to change state, similar to the action of a mechanical
switch. In this model, the setpoint is adjustable through the action of a 20-turn potentiometer (see the Calibration
section). The status output is suitable for connection to building controllers or other appropriate data acquisition
equipment operating at up to 30 volts. The H906 requires a 5 to 30 Vdc external power supply to generate its
output.

The H906 housing offers unprecedented mounting flexibility. The mounting bracket can be attached in three
different places. Additionally, the bracket is compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.

NOTICE

• This product is not intended for life or safety applications.

• Do not install this product in hazardous or classied locations.

• The installer is responsible for conformance to all applicable codes.

• Mount this product inside a suitable re and electrical enclosure.

*The CE mar k indicat es RoHS2 comp liance. Ple ase refer to t he CE Decla ration of
Conformity for additional details.

Specifications

Sensor Power 5 to 30 Vdc

Amperage Range 2.5 to 135 A continuous

Status Output Ratings N.C. 0.1 A @ 30 Vdc, pola rit y sensitive

Insulation Class 600 Vac RMS (UL); 300 Vac (CE)

Setpoint Adjustable, 2.5 A or less

Frequency Range 50/60 Hz

Temperature Range -15 to 60 °C (5 to 140 °F)

Humidity Range 10 to 90% R H non-condens ing

Hysteresis 10 % t yp ic al

Off State Lea kage 34 μA @ 5 Vdc, 200 μA @ 30 Vdc

On Sta te Voltage Dro p 1.9 Vdc max. @ 0.1 A

Terminal Block Wire Size 24 to 14 AWG (0.2 to 2 .1 mm

Terminal Block Torque 3.5 to 4.4 in-l bs (0.4 to 0.5 N- m)

COMPLIANCE INFORMATION

Agency Approvals UL508 open device li stin g, CE: EN61010-1

Installation Category Ca t. II I, pol lution degr ee 2

The product design provides basic insulation only.
Do not use the LED indicators as evidence of applied voltage.

2

)

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H906 Installation Guide

3.0”

Fan or Pump

CONTROLLER

Insulated Conductor Only!

DI

Motor

Observe Polarity!

5 to 30 Vdc

POWER SOURCE

+

-

CONTACTOR

-

-

+

+

TM

Dimensions

Installation

Removable Mounting Bracket

3.1”

(79 mm)

Ø 0.3”

(8 mm)

1.1”

(26 mm)

0.8”

(21 mm)

2.8”

(70 mm)

2.5”

(64 mm)

1.0”

(25 mm)

Bracket can
be mounted
on three sides
for added
installation
exibility.

Self-gripping Iris

1.4”

(36 mm)

Use DIN Rail Mounting clip
(Veris part number AH01) to
mount on standard DIN rail.

Disconnect and lock out power to the enclosure containing the conductor to be
monitored.

1. Locate a mounting surface for the removable mounting
bracket that will allow the monitored conductor to pass
through the center window when it is installed and that will
keep the product at least ½” (13 mm) from any uninsulated
conductors. Determine cable routing for the controller
connection, allowing the wiring to reach the mounting
location.

2. Drill holes to mount the bracket to the chosen surface using
the included screws.

3. Wire the output connections from the sensor to the controller
(solid-state contact) and to the external power supply.
Observe polarity.

4. Snap the sensor over the conductor and clip the assembly to
the mounting bracket.

5. Secure the enclosure and reconnect power.

6. Calibrate the sensor with the load running normally.

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H906 Installation Guide

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Notes

For load currents greater than sensor maximum rating:

Use a 5 Amp (H68xx series) current transformer (CT) as shown. This technique can be combined with wrapping (see below) to add
range for a low current load on a high current source.

240A

>135 A (sensor max.)

DANGER: 5A CTs can present
hazardous voltages. Install

300A:

4A

5A

H68 xx-5A CT

CTs in accordance with
manufacturer's instructions.
Terminate the CT secondary
before applying current.

For load currents less than sensor minimum rating:

Wrap the monitored conductor through the center window and around the sensor body to produce multiple turns. This increases
the current measured by the transducer. Program the controller to account for the extra turns (e.g., if four turns pass through the
sensor (as shown) divide the normal reading by 4).

< 2.5 A (Sensor Min.)

1A

4x

•

Derate the product’s maximum current for the number of turns
through the current sensor window using the following formula:

Rated Max. Amps ÷ Number of Turns = Max. monitored Amps

e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor

• Never exceed the current sensor rating.

• Failure to follow these instructions can result in overheating
and permanent equipment damage.

NOTICE

RISK OF EQUIPMENT DAMAGE

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H906 Installation Guide

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Calibration

Before beginning calibration, establish normal load conditions. Then choose either A or B below.

A. To monitor under-current (belt loss, coupling shear, status)

Status
Closed

Status
Closed

Status

Closed

Setpoint

Status

Open

Setpoint

Status

Open

Setpoint

Status

Open

1. Turn setpoint screw clockwise
until Status Open LED turns
on.

2. Slowly turn the screw counter
clockwise until the Status
Closed LED turns on.

3. Turn the screw an additional
¼ turn counter clockwise for
operational margin.

¼

B. To monitor over-current (mechanical problems, seized impeller)

1. Turn setpoint screw counter
clockwise until Status Closed
LED turns on.

Status
Closed

Setpoint

Status

Open

Troubleshooting

2. Slowly turn the setpoint screw

Setpoint

clockwise until the Status

Status

Open LED just turns on.

3. Turn the setpoint screw an

Status
Closed

Open

Setpoint

additional ¼ turn clockwise

Status

for operational margin.

¼

Status

Closed

Open

Problem Solution

No reading at controller • Check sensor calibration (see above)

• Check for control voltage at sensor (5 Vdc < voltage < 30 V)

• Check for amperage in monitored conductor (> 2.5 A)

• Verify correct polarity

• Assure that sensor core mating surfaces are clean and that the core clamp is completely closed

Setpoint screw has no stops The setpoint screw has a slip-clutch at both ends of its travel to avoid damage. Twenty turns CCW will

Both LEDs are lit Setpoint screw is too far clockwise. See solution above.

reset the sensor to be most sensitive. Repeat calibration above.

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