Veris H809 Installation Instructions
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
CURRENT MONITORING
INSTALLATION GUIDE
H809
TM
809
Solid-Core Current Switch, Adjustable Trip Point
Installer’s Specifications
Sensor Power Induced from the monitored conductor
Amperage Range 0.75 to 50 A continuous*
Insulation Class 600 VAC RMS (UL)
Frequency Range 50/60 Hz
Temperature Range -15° to 60°C (5° to 140°F)
Humidity Range 10-90% RH non-condensing
Hysteresis 10% typical
Status Output N.O. 0.2 A@120 VAC, polarit y sensitive
O-S tate Resistance 1 MΩ
On-State Resistance 20 Ω
Terminal Block Max. Wire Size 14 AWG
Terminal Block Torque (nom.) 4 in-lbs (0.45 N-m)
Agency Approvals UL508 E150462
The product design provi des for basic insulation only.
* When operating at 50 Hz, low threshold may be 0.9 A.
INSTALLATION
Disconnect and lock out power to the enclosure containing the
conductor to be monitored.
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
CONTACTOR
DDC CONTROLLER
DI
+
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.
2. Drill holes to mount the bracket to the chosen surface using the included screws.
3. Wire the output connections and relay between the sensor and the controller
(solid-state contact).
4. Route the conductor through the sensor’s center window and slip the assembly
into the mounting bracket.
5. Secure enclosure and reconnect power.
6. Calibrate sensor with load running normally.
DIMENSIONS
Removable/Adjustable Mounting Bracket
0.7"
(18 mm)
0.9"
(23 mm)
2.8"
(71 mm)
Z201764-0E PAGE 1 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 01121
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.
Motor
Fan or Pump
0.4” x 0.2”
Slot (x2)
1.7
(43 mm)
2.3"
(58 mm)
1.1"
(27 mm)
TM
H809
INSTALLATION GUIDE
OPERATION
The H809 is a current-sensitive switching device that monitors current (amperage)
in the conductor passing through it. A change in amperage in the monitored
conducter 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 setpoint is adjustable through the action of a 20-turn potentiometer
(see 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 H809 requires no external power supply to generate its output.
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.
150A
2.5A
> 50 A (Sensor max.)
300A:5A
H68xx-5A CT
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
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
Setpoint
1/4
STATUS
OK!
STOP
3. Turn the screw an
additional 1/4 turn
counter-clockwise for
operational margin.
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.
< 0.75 A (Sensor Min.)
4x
0.5A
B. To monitor over-current (mechanical problems, seized impeller)
1/4
STATUS
OK!
STOP
3. Turn the setpoint
screw an additional
1/4 turn clockwise for
operational margin.
!
OK!
A
1. Turn setpoint screw
Setpoint
Status
Closed
counter-clockwise until
Status Closed LED turns ON.
2. Slowly turn the setpoint screw clockwise until the Status Open LED just
turns ON.
Status
Open
Setpoint
STOP
Setpoint
+
TROUBLESHOOTING
Problem Solution
No Reading at
Controller
Setpoint screw has
no stops
Both LEDs are lit Unit is out of calibration. Turn screw 20 turns CCW and recalibrate.
• Check sensor calibration (see above)
• Check for control power at sensor (<120 VDC)
• Check for amperage in monitored conductor (>0.75 A)
• Verify correct polarity
• The setpoint screw has a slip-clutch at both ends of its travel to
avoid damage. Twenty turns CCW will reset the sensor to be most
sensitive. Repeat calibration above.
Z201764-0E PAGE 2 ©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 01121
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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