Veris H959 Installation Instructions

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

Fan or Pump

CONTROLLER

Motor

CONTACTOR

(Status)

(Relay

Coil)

CONTROL POWER

CURRENT MONITORING

INSTALLATION GUIDE

H959

959

Split-Core Current Switch, High Voltage Output,

with Command Relay

Installer’s Speciﬁcations

Sensor Power Induced from monitored conductor Insulation Class 600VAC RMS Frequency Ran ge 50/60 Hz Temperature Range -15° to 60°C (5° to 140°F) Humidity Range 10-90% RH, non-condensing Hysteresis 10% Typical Terminal Block Maximum Wire Size 14 AWG Terminal Block Torque (nominal) 4 in-lbs (0.45 N-m) Safety UL508 open device listing

Do not use the LED status indicators as evidence of ap plied voltage.

INSTALLATION

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 device at least 1/2” from any uninsulated conductors. Determine cable routing for the controller connection, allowing wiring to reach the mounting location.

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.

WIRING EXAMPLE

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.

2. Install mounting bracket to the chosen surface using the included screws.

3. Wire the output connections between the sensor and the controller.

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

5. Secure enclosure and reconnect power

6. Calibrate the sensor (see Calibration section).

DIMENSIONS

Removable Mounting Bracket

1.0”

3.1”

(79 mm)

Ø = 0.3”

(8 mm)

1.1”

(26 mm)

(21 mm)

(70 mm)

3.0”

(76 mm)

(25 mm)

0.8”

2.8”

2.5”

(64 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.

H959

INSTALLATION GUIDE

OPERATION

The H959 is a current-sensitive switching device with an integrated command relay that monitors current (amperage) in the conductor passing through it. A change in amperage in the monitored conductor that crosses the switch threshold plus the hysteresis value will cause the resistance of the status output to change state, similar to the action of a mechanical switch. The integrated relay allows start/stop control.

In this model, the setpoint 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 120 volts. The H959 relay requires a 12 VDC external power supply for operation.

The H959 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) to add range for a low current load on a high current source.

240A

> 135A (Sensor max.)

CALIBRATION

Before beginning calibration, establish normal load conditions.

OK!

Then choose either A or B below.

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

OK!

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

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

Setpoint

Status Closed

OK!

STOP

Status

Open

Setpoint

1/4

STATUS

OK!

Setpoint

STOP

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

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

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.

OK!

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

Setpoint

Status Closed

STATUS

OK!

STOP

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

< 2.5 A (Sensor Min.)

turns pass through the sensor (as shown), divide the normal controller reading by 4.

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.

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

Status

Setpoint

Open

Setpoint

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

STOP

1/4

operational margin.

TROUBLESHOOTING

Problem Solution

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

• Check for control voltage at sensor (<120V)

• 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.