Veris Industries H909HV User manual

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.

DANGER

TM

CURRENT MONITORING

INSTALLATION GUIDE

H909HV

909HV

Split-Core Current Switch, Adjustable Trip Point

with 250VAC/DC Output

Installer’s Specifications

Amperage Range 2.5 to 135A Continuous
Sensor Power Induced from monitored conductor
Max. Current 200A
Frequency 50/60 Hz
Switch

Output Max. current: 1A; max. voltage: 250VAC/DC
Hysteresis 10% of setpoint, typical
Insulation

Class 300V (CE); 600VAC RMS
Temperature Range -15° to 60° C (-5° to 140° F)
Humidity Range 10-90% RH non-condensing
Output Resistance - O -State 0 (open switch represents 1+ MΩ of resistance)
Terminal

Block Maximum Wire Size 14 AWG

Terminal Block Torque (nominal) 4 in-lbs (0.45 N-m)

For CE compliance, conductor shall be insul ated according to IEC 61010‑1:2001, Installation
Category III or equivalent.
The product design provi des for basic insulation only.

INSTALLATION

Disconnect and lock out power to 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 device at least 1/2” from any uninsulated conductors.
Determine cable routing for the output connection, allowing wiring to reach the
mounting location.

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

NOTICE

3. Wire the output connections between the sensor and the controller (solid-state

contact).

• 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.

4. Snap the sensor over the wire to be monitored and clip the assembly to the

mounting bracket.

5. Calibrate the sensor (see page 2) with the load running normally.

WIRING EXAMPLE

DIMENSIONS

Removable Mounting Bracket

CONTACTOR

Insulated Conductor

DDC CONTROLLER

1.1”

(26 mm)

3.1”

(79 mm)

DI

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Ø = 0.3”

(8 mm)

3.0”

(76 mm)

0.8”

(21 mm)

2.8”

(70 mm)

(64 mm)

2.5”

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 stan‑

dard DIN rail.

TM

H909HV

INSTALLATION GUIDE

OPERATION

The H909HV is a current-sensitive switching device that monitors current (amperage)
in the conductor passing through it. A change in amperage in the monitored
conductor which crosses the switch (trip point) threshold plus the hysteresis value
will cause the resistance of the status output to change state, similar to the ac tion of
a mechanical switch. In this model, the trip point is adjustable through the action of
a twenty (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 250 volts. The H909HV requires no external power
supply to generate its output.

The H909HV housing oers unprecedented mounting exibility. The mounting
bracket can be attached in three dierent places. Additionally, the bracket is
compatible with the Veris AH01 DIN Rail clip, allowing DIN mounting.

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) when added safety is desired for a low current
load on a high current source.

240A

> 135A (Sensor max.)

CALIBRATION

Before beginning calibration, establish normal load conditions.

OK!

A

Then choose either A or B below.

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

!

OK!

A

1. Turn setpoint screw
counter-clockwise until
Status OPEN LED turns ON.

2. Slowly turn the screw clockwise until the Status CLOSED LED just turns ON.

Setpoint

Status
Closed

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

OK!

STOP

+

Status

Open

Setpoint

STATUS

Setpoint

1/4

OK!

STOP

3. Turn the screw
an additional 1/4
turn clockwise for
operational margin.

5A

4A

300A:

H68xx‑5A CT

DANGER: 5A CTs can present hazardous voltages.
Install CTs in accordance with manufacturer's instructions.
Terminate the CT secondary before applying current.

CAUTION

RISK OF EQUIPMENT DAMAGE

• Derate the product’s maximum current for the number of turns
through the sensing 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

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

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 controller to account
for the extra turns. e.g., if four
turns pass through the sensor
(as shown) divide the normal
controller reading by 4.

< 2.5 A (Sensor Min.)

1A

4x

!

OK!

A

1. Turn setpoint screw clockwise until
Status CLOSED LED turns ON.

Setpoint

Status
Closed

STATUS

OK!

STOP

2. Slowly turn the setpoint screw counter-clockwise until the Status OPEN LED just
turns ON.

Status

Open

Setpoint

Setpoint

+

3. Turn the setpoint
screw an additional
1/4 turn counter-

STOP

1/4

clockwise for
operational margin.

TROUBLESHOOTING

Problem Solution

No Reading at Controller • Check sensor calibration (see above)

• Check for control voltage at sensor (250V)

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

• 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

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

travel to avoid damage. Twenty turns CCW will reset
the sensor to be most sensitive. Repeat calibration
above.

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