NK TECHNOLOGIES VTD-BD Series Instructions

Specifi cations
External Power Supply 24 VAC/ VDC (22-26 V)
Power Consumption <2 VA Use Class 2 power supply
Voltage Measurement 0-15, 25, 50, 150, 300 or
600 VDC
Input Impedance >160 KΩ
Output Signal +/-5 VDC
+/-10 VDC
Response Time 500 mS (10% to 90% value)
Accuracy < 1% Full scale
Output Loading >10 KΩ for stated accuracy
Isolation Voltage UL listed to 2200 VAC
Frequency Range DC only
Enclosure UL94 V-0 Rated
Use copper conductors only.
Environmental -4 to 122°F (-20 to 50°C)
0–95% RH Non-condensing
Pollution Degree 2
Altitude to 2000 meters (6561 ft)
Listings UL/cUL, CE
For products intended for the EU market, the following is ap-
plicable to the CE compliance of the product:
The VTD-BD series are designed to comply with EN 61010-1
CAT III 600V max measurement category. Use 24 V input power
and fuse at max 5 amps. Power source overvoltage category I as
defi ned per EN 61010-1
Warning! Risk of danger
Safe operation can only be guaranteed if the
transducer is used for the purpose for which is
was designed and within the limits of the techni-
cal specifi cations. When this symbol is used, it
means you must consult all documentation to
understand the nature of potential hazards and
the action required to avoid them.
Warning! Risk of electrical shock
When operating the transducer certain parts may
carry hazardous live voltage (e.g. primary con-
ductors, power supply). The transducer should
not be put into operation if the installation is not
complete.
Model Number Key
VTD 1 - 010 - 24U - BD - OS
HOUSING:
OS - Oval DIN Mtg.
OUTPUT TYPE:
BD - Bidirectional
POWER SUPPLY:
24U - 24 VAC/VDC
OUTPUT:
005 - +/-5 VDC
010 - +/-10 VDC
VOLTAGE INPUT RANGE:
0 - 15 VDC
1 - 25 VDC
2 - 50 VDC
3 - 150 VDC
4 - 300 VDC
5 - 600 VDC
SENSOR TYPE:
VTD - DC Voltage Transducers
Know Your Power
Other NK Technologies Products Include:
AC & DC Current Transducers
AC & DC Current Operated Switches
1 & 3Power Transducers
Current & Potential Transformers (CTs & PTs)
3511 Charter Park Drive, San Jose, CA 95136
Phone: 800-959-4014 or 408-871-7510
Fax: 408-871-7515
sales@nktechnologies.com, www.nktechnologies.com
INSTRUCTIONS
VTD-BD SERIES
Bidirectional DC Voltage Transducers
+/-5 or +/-10 VDC Output
Quick "How To" Guide
1. Ensure correct sensor model was chosen for Input Volt-
age of application.
2. Mount the sensor to a DIN rail using integrated mounting
clip on backside of transducer or secure using the tabs
in each corner.
3. Connect monitored voltage to input terminals (2) & (1)
and output wiring using 22-16 AWG copper wires insu-
lated to 60/75°C. Lift the orange clip on the terminal,
insert wire and allow it to clamp on the stripped end of
the wire.
Refer to "Output Wiring" section for voltage and imped-
ance recommendations.
IMPORTANT: Monitored voltage (V1/V2) polarity sensi-
tive for output polarity.
4. Connect 24 VAC or VDC power supply fused to 5 amp
using 22-12 AWG copper wiring rated 60/75°C and
tighten to 6 in-lbs torque to terminals 3-4 (not polarity
sensistive).
5. Connect output to the load using terminal 6 for the output
signal, and terminal 5 to common
6. Energize primary circuit and sensor power.
292180021 Rev 3