H809

H809
INSTALLATION GUIDE
CURRENT MONITORING
TM
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 [email protected] VAC, polarity sensitive
Off-State Resistance
1 MΩ
On-State Resistance20 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 provides for basic insulation only.
* When operating at 50 Hz, low threshold may be 0.9 A.
DANGER
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.
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.
PAGE 1
4. Route the conductor through the sensor’s center window and slip the assembly
into the mounting bracket.
DIMENSIONS
DDC CONTROLLER
Fan or Pump
Z201764-0E
3. Wire the output connections and relay between the sensor and the controller
(solid-state contact).
6. Calibrate sensor with load running normally.
DI
+
Motor
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.
5. Secure enclosure and reconnect power.
WIRING EXAMPLE
CONTACTOR
Disconnect and lock out power to the enclosure containing the
conductor to be monitored.
2. Drill holes to mount the bracket to the chosen surface using the included screws.
NOTICE
•
•
•
•
INSTALLATION
Removable/Adjustable Mounting Bracket
0.9"
(23 mm)
0 0.7"
(18 mm)
2.8"
(71 mm)
0.4” x 0.2”
Slot (x2)
1.7
(43 mm)
1.1"
(27 mm)
2.3"
(58 mm)
©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected]
01121
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
INSTALLATION GUIDE
H809
TM
OPERATION
CALIBRATION
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.
Before beginning calibration, establish normal load conditions.
OK!
OK!
A
Then choose either A or B below.
A. To monitor under-current (belt loss, coupling shear, status)
!
STATUS
OK!
NOTES
OK!
A
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.
> 50 A (Sensor max.)
150A
Status
Open Setpoint
1. Turn setpoint screw
clockwise until Status
Open LED turns ON.
STOP
2. Slowly turn the screw counter‑clockwise until the Status Closed LED just
turns ON.
3. Turn the screw an
Setpoint
Status
Setpoint Closed
additional 1/4 turn
counter‑clockwise for
1/4 operational margin.
+
300A:5A
2.5A
STOP
H68xx-5A CT
B. To monitor over-current (mechanical problems, seized impeller)
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.)
0.5A
Z201764-0E
PAGE 2
4x
!
STATUS
OK!
OK!
A
Status
1. Turn setpoint screw
Setpoint Closed
counter‑clockwise until
Status Closed LED turns ON.
STOP
2. Slowly turn the setpoint screw clockwise until the Status Open LED just
turns ON.
3. Turn the setpoint
Setpoint
Status
Open Setpoint
screw an additional
1/4 turn clockwise for
1/4 operational margin.
+
STOP
TROUBLESHOOTING
Problem
Solution
No Reading at
Controller
• 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
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 reset the sensor to be most
sensitive. Repeat calibration above.
Both LEDs are lit
Unit is out of calibration. Turn screw 20 turns CCW and recalibrate.
©2012 Veris Industries USA 800.354.8556 or +1.503.598.4564 / [email protected]
01121
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
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